HEADER    ISOMERASE                               30-APR-00   1E1C              
TITLE     METHYLMALONYL-COA MUTASE H244A MUTANT                                 
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: METHYLMALONYL-COA MUTASE ALPHA CHAIN;                      
COMPND   3 CHAIN: A, C;                                                         
COMPND   4 FRAGMENT: WHOLE MOLECULE;                                            
COMPND   5 EC: 5.4.99.2;                                                        
COMPND   6 ENGINEERED: YES;                                                     
COMPND   7 MUTATION: YES;                                                       
COMPND   8 OTHER_DETAILS: CHAINS A AND C INCLUDE COENZYME B12, AND DESULPHO-COA.
COMPND   9 B12 IS PRESENT LARGELY AS REDUCED COB(II)ALAMIN, OR B12R;            
COMPND  10 MOL_ID: 2;                                                           
COMPND  11 MOLECULE: METHYLMALONYL-COA MUTASE BETA CHAIN;                       
COMPND  12 CHAIN: B, D;                                                         
COMPND  13 FRAGMENT: WHOLE MOLECULE;                                            
COMPND  14 EC: 5.4.99.2;                                                        
COMPND  15 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: PROPIONIBACTERIUM FREUDENREICHII SUBSP.         
SOURCE   3 SHERMANII;                                                           
SOURCE   4 ORGANISM_TAXID: 1752;                                                
SOURCE   5 STRAIN: NCIB 9885;                                                   
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   8 EXPRESSION_SYSTEM_STRAIN: K38;                                       
SOURCE   9 EXPRESSION_SYSTEM_PLASMID: PGP1-2, PMEX1;                            
SOURCE  10 EXPRESSION_SYSTEM_GENE: MUTA, MUTB;                                  
SOURCE  11 MOL_ID: 2;                                                           
SOURCE  12 ORGANISM_SCIENTIFIC: PROPIONIBACTERIUM FREUDENREICHII SUBSP.         
SOURCE  13 SHERMANII;                                                           
SOURCE  14 ORGANISM_TAXID: 1752;                                                
SOURCE  15 STRAIN: NCIB 9885;                                                   
SOURCE  16 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE  17 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE  18 EXPRESSION_SYSTEM_STRAIN: K38;                                       
SOURCE  19 EXPRESSION_SYSTEM_PLASMID: PGP1-2, PMEX1;                            
SOURCE  20 EXPRESSION_SYSTEM_GENE: MUTA, MUTB;                                  
SOURCE  21 OTHER_DETAILS: THE 2 GENES MUTA (BETA CHAIN) AND MUTB (ALPHA CHAIN)  
SOURCE  22 ARE COEXPRESSED FROM THE SAME PLASMID                                
KEYWDS    ISOMERASE, MUTASE, INTRAMOLECULAR TRANSFERASE                         
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    P.R.EVANS,N.H.THOMA                                                   
REVDAT   7   06-DEC-23 1E1C    1       REMARK LINK                              
REVDAT   6   28-JUN-17 1E1C    1       REMARK                                   
REVDAT   5   31-OCT-12 1E1C    1       REMARK VERSN  FORMUL                     
REVDAT   4   24-FEB-09 1E1C    1       VERSN                                    
REVDAT   3   03-NOV-00 1E1C    1       JRNL                                     
REVDAT   2   21-JUL-00 1E1C    1       DBREF                                    
REVDAT   1   07-MAY-00 1E1C    0                                                
JRNL        AUTH   N.H.THOMA,P.R.EVANS,P.F.LEADLAY                              
JRNL        TITL   PROTECTION OF RADICAL INTERMEDIATES AT THE ACTIVE SITE OF    
JRNL        TITL 2 ADENOSYLCOBALAMIN-DEPENDENT METHYLMALONYL-COA MUTASE         
JRNL        REF    BIOCHEMISTRY                  V.  39  9213 2000              
JRNL        REFN                   ISSN 0006-2960                               
JRNL        PMID   10924114                                                     
JRNL        DOI    10.1021/BI0004302                                            
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.62 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC                                               
REMARK   3   AUTHORS     : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER,              
REMARK   3               : NICHOLLS,WINN,LONG,VAGIN                             
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.62                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 29.20                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 97.5                           
REMARK   3   NUMBER OF REFLECTIONS             : 99776                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : THROUGHOUT                      
REMARK   3   FREE R VALUE TEST SET SELECTION  : RANDOM                          
REMARK   3   R VALUE     (WORKING + TEST SET) : 0.219                           
REMARK   3   R VALUE            (WORKING SET) : 0.207                           
REMARK   3   FREE R VALUE                     : 0.283                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 4.200                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 4167                            
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 20506                                   
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 276                                     
REMARK   3   SOLVENT ATOMS            : 1525                                    
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 54.00                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 48.00                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 4.90000                                              
REMARK   3    B22 (A**2) : 0.20000                                              
REMARK   3    B33 (A**2) : 0.20000                                              
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): NULL          
REMARK   3   ESU BASED ON FREE R VALUE                       (A): NULL          
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): NULL          
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): NULL          
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   DISTANCE RESTRAINTS.                    RMS    SIGMA               
REMARK   3    BOND LENGTH                     (A) : 0.016 ; 0.020               
REMARK   3    ANGLE DISTANCE                  (A) : 0.057 ; 0.040               
REMARK   3    INTRAPLANAR 1-4 DISTANCE        (A) : 0.064 ; 0.050               
REMARK   3    H-BOND OR METAL COORDINATION    (A) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3   PLANE RESTRAINT                  (A) : 0.016 ; 0.020               
REMARK   3   CHIRAL-CENTER RESTRAINT       (A**3) : 0.200 ; 0.150               
REMARK   3                                                                      
REMARK   3   NON-BONDED CONTACT RESTRAINTS.                                     
REMARK   3    SINGLE TORSION                  (A) : 0.130 ; 0.150               
REMARK   3    MULTIPLE TORSION                (A) : 0.190 ; 0.150               
REMARK   3    H-BOND (X...Y)                  (A) : NULL  ; NULL                
REMARK   3    H-BOND (X-H...Y)                (A) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3   CONFORMATIONAL TORSION ANGLE RESTRAINTS.                           
REMARK   3    SPECIFIED                 (DEGREES) : NULL  ; NULL                
REMARK   3    PLANAR                    (DEGREES) : NULL  ; NULL                
REMARK   3    STAGGERED                 (DEGREES) : NULL  ; NULL                
REMARK   3    TRANSVERSE                (DEGREES) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : 2.900 ; 3.000                
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : 4.700 ; 5.000                
REMARK   3   SIDE-CHAIN BOND              (A**2) : 2.600 ; 4.000                
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : 6.800 ; 6.000                
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1E1C COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 30-APR-00.                  
REMARK 100 THE DEPOSITION ID IS D_1290004901.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 15-JUL-97                          
REMARK 200  TEMPERATURE           (KELVIN) : 100.0                              
REMARK 200  PH                             : 7.50                               
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : N                                  
REMARK 200  RADIATION SOURCE               : ROTATING ANODE                     
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : ELLIOTT GX-13                      
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.5418                             
REMARK 200  MONOCHROMATOR                  : NI FILTER                          
REMARK 200  OPTICS                         : MIRRORS                            
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : MARRESEARCH                        
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : MOSFLM                             
REMARK 200  DATA SCALING SOFTWARE          : SCALA                              
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 335799                             
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.620                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 29.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 6.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 97.1                               
REMARK 200  DATA REDUNDANCY                : 3.400                              
REMARK 200  R MERGE                    (I) : 0.10400                            
REMARK 200  R SYM                      (I) : 0.10400                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 11.4000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.62                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.76                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 97.1                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 2.90                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.44600                            
REMARK 200  R SYM FOR SHELL            (I) : 0.44600                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 3.200                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: AMORE                                                 
REMARK 200 STARTING MODEL: PDB ENTRY 1REQ                                       
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 48.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.83                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 14.4% PEG 4000, 20% V/V GLYCEROL, 12MM   
REMARK 280  DESULPHO-COA, ADENOSYLCOBALAMIN 16MM,TRIS/HCL 100 MM, PH 7.5 THE    
REMARK 280  CRYSTALS WERE GROWN IN THE PRESENCE OF 2MM EXCESS 5'-               
REMARK 280  DEOXYADENOSYLCOBALAMIN (COENZYME B12) AND 12MM DESULPHO-COA         
REMARK 280  (FINAL CONCENTRATIONS), EQUILIBRATED AGAINST 14% W/V PEG 4000       
REMARK 280  AND 20% V/V GLYCEROL, 100MM TRIS PH 7.5., PH 7.50                   
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21                       
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X+1/2,-Y,Z+1/2                                         
REMARK 290       3555   -X,Y+1/2,-Z+1/2                                         
REMARK 290       4555   X+1/2,-Y+1/2,-Z                                         
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000       62.69900            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       83.47450            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       80.91450            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       83.47450            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       62.69900            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       80.91450            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1, 2                                                    
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 300 REMARK: BIOLOGICAL UNIT : HETERODIMERTHE ASYMMETRIC UNIT             
REMARK 300   OF THE CRYSTAL CONTAINS TWOHETERODIMERIC MOLECULES                 
REMARK 300  , EACH WITH AN ALPHA CHAIN(CHAINS A AND C,                          
REMARK 300  CORRESPONDING TO GENE MUTB) AND A BETACHAIN (                       
REMARK 300  CHAINS B AND D, CORRESPONDING TO GENE MUTA).                        
REMARK 300  MOLECULE 1 CONSISTS OF CHAINS A (ALPHA), B (BETA                    
REMARK 300  ), WITHWATERS X. MOLECULE 2 CONSISTS OF CHAINS C                    
REMARK 300   (ALPHA), D(BETA), WATERS Y. CHAINS A AND C                         
REMARK 300  INCLUDE COENZYME B12(RESIDUE 800), DESULPHO-COA (                   
REMARK 300  RESIDUE 801)                                                        
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PQS                                                   
REMARK 350 TOTAL BURIED SURFACE AREA: 11900 ANGSTROM**2                         
REMARK 350 SURFACE AREA OF THE COMPLEX: 55000 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -86.4 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B                                  
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 2                                                       
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PQS                                                   
REMARK 350 TOTAL BURIED SURFACE AREA: 11860 ANGSTROM**2                         
REMARK 350 SURFACE AREA OF THE COMPLEX: 55080 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -89.1 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: C, D                                  
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 400                                                                      
REMARK 400 COMPOUND                                                             
REMARK 400 CHAIN A AND C ENGINEERED MUTATION HIS244ALA                          
REMARK 400  THIS STRUCTURE IS OF THE HIS244 - ALA MUTANT IN THE ALPHA           
REMARK 400  CHAIN (A AND C). HIS244 IS A CATALYTIC RESIDUE                      
REMARK 400  HYDROGEN-BONDING TO THE CARBONYL GROUP OF THE SUBSTRATE:            
REMARK 400  THIS MUTATION REDUCES KCAT BY ABOUT 1200-FOLD AND RENDERS           
REMARK 400  THE ENZYME VERY SENSITIVE TO OXIDATION BY O2                        
REMARK 465                                                                      
REMARK 465 MISSING RESIDUES                                                     
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                       
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                
REMARK 465                                                                      
REMARK 465   M RES C SSSEQI                                                     
REMARK 465     SER B     1                                                      
REMARK 465     SER B     2                                                      
REMARK 465     THR B     3                                                      
REMARK 465     ASP B     4                                                      
REMARK 465     GLN B     5                                                      
REMARK 465     GLY B     6                                                      
REMARK 465     THR B     7                                                      
REMARK 465     ASN B     8                                                      
REMARK 465     PRO B     9                                                      
REMARK 465     ALA B    10                                                      
REMARK 465     ASP B    11                                                      
REMARK 465     THR B    12                                                      
REMARK 465     ASP B    13                                                      
REMARK 465     ASP B    14                                                      
REMARK 465     LEU B    15                                                      
REMARK 465     THR B    16                                                      
REMARK 465     PRO B    17                                                      
REMARK 465     THR B    18                                                      
REMARK 465     SER D     1                                                      
REMARK 465     SER D     2                                                      
REMARK 465     THR D     3                                                      
REMARK 465     ASP D     4                                                      
REMARK 465     GLN D     5                                                      
REMARK 465     GLY D     6                                                      
REMARK 465     THR D     7                                                      
REMARK 465     ASN D     8                                                      
REMARK 465     PRO D     9                                                      
REMARK 465     ALA D    10                                                      
REMARK 465     ASP D    11                                                      
REMARK 465     THR D    12                                                      
REMARK 465     ASP D    13                                                      
REMARK 465     ASP D    14                                                      
REMARK 465     LEU D    15                                                      
REMARK 465     THR D    16                                                      
REMARK 465     PRO D    17                                                      
REMARK 465     THR D    18                                                      
REMARK 470                                                                      
REMARK 470 MISSING ATOM                                                         
REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER;           
REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER;          
REMARK 470 I=INSERTION CODE):                                                   
REMARK 470   M RES CSSEQI  ATOMS                                                
REMARK 470     LYS A  31    CE   NZ                                             
REMARK 470     GLU A  36    CG   CD   OE1  OE2                                  
REMARK 470     LYS A  56    CD   CE   NZ                                        
REMARK 470     LYS A 188    CG   CD   CE   NZ                                   
REMARK 470     GLU A 426    CG   CD   OE1  OE2                                  
REMARK 470     LYS A 429    CG   CD   CE   NZ                                   
REMARK 470     ARG A 461    CG   CD   NE   CZ   NH1  NH2                        
REMARK 470     HIS A 474    CG   ND1  CD2  CE1  NE2                             
REMARK 470     ASP A 479    CG   OD1  OD2                                       
REMARK 470     GLU A 502    CG   CD   OE1  OE2                                  
REMARK 470     GLU A 506    CB   CG   CD   OE1  OE2                             
REMARK 470     LYS A 525    CD   CE   NZ                                        
REMARK 470     LYS A 554    CE   NZ                                             
REMARK 470     LYS A 572    CD   CE   NZ                                        
REMARK 470     LYS A 575    CG   CD   CE   NZ                                   
REMARK 470     GLU A 581    CB   CG   CD   OE1  OE2                             
REMARK 470     LYS A 670    CD   CE   NZ                                        
REMARK 470     ARG A 697    NE   CZ   NH1  NH2                                  
REMARK 470     LYS A 698    CD   CE   NZ                                        
REMARK 470     LYS B  29    CG   CD   CE   NZ                                   
REMARK 470     GLU B  33    CG   CD   OE1  OE2                                  
REMARK 470     ARG B  37    NE   CZ   NH1  NH2                                  
REMARK 470     LYS B  51    CD   CE   NZ                                        
REMARK 470     LYS B  79    CE   NZ                                             
REMARK 470     LYS B  84    CE   NZ                                             
REMARK 470     GLU B 118    CG   CD   OE1  OE2                                  
REMARK 470     LYS B 123    CG   CD   CE   NZ                                   
REMARK 470     GLU B 211    CG   CD   OE1  OE2                                  
REMARK 470     ASP B 219    CB   CG   OD1  OD2                                  
REMARK 470     ASP B 230    CG   OD1  OD2                                       
REMARK 470     LYS B 418    CE   NZ                                             
REMARK 470     LYS B 431    CD   CE   NZ                                        
REMARK 470     GLU B 509    CD   OE1  OE2                                       
REMARK 470     LYS B 591    CE   NZ                                             
REMARK 470     LYS B 600    CG   CD   CE   NZ                                   
REMARK 470     GLU B 608    CG   CD   OE1  OE2                                  
REMARK 470     GLU B 610    CG   CD   OE1  OE2                                  
REMARK 470     LYS B 611    CG   CD   CE   NZ                                   
REMARK 470     LYS C  31    CE   NZ                                             
REMARK 470     GLU C  36    CG   CD   OE1  OE2                                  
REMARK 470     LYS C  56    CD   CE   NZ                                        
REMARK 470     LYS C 188    CG   CD   CE   NZ                                   
REMARK 470     GLU C 426    CG   CD   OE1  OE2                                  
REMARK 470     LYS C 429    CG   CD   CE   NZ                                   
REMARK 470     ARG C 461    CG   CD   NE   CZ   NH1  NH2                        
REMARK 470     HIS C 474    CG   ND1  CD2  CE1  NE2                             
REMARK 470     ASP C 479    CG   OD1  OD2                                       
REMARK 470     GLU C 502    CG   CD   OE1  OE2                                  
REMARK 470     GLU C 506    CB   CG   CD   OE1  OE2                             
REMARK 470     LYS C 525    CD   CE   NZ                                        
REMARK 470     LYS C 554    CE   NZ                                             
REMARK 470     LYS C 572    CD   CE   NZ                                        
REMARK 470     LYS C 575    CG   CD   CE   NZ                                   
REMARK 470     GLU C 581    CB   CG   CD   OE1  OE2                             
REMARK 470     LYS C 670    CD   CE   NZ                                        
REMARK 470     ARG C 697    NE   CZ   NH1  NH2                                  
REMARK 470     LYS C 698    CD   CE   NZ                                        
REMARK 470     LYS D  29    CG   CD   CE   NZ                                   
REMARK 470     GLU D  33    CG   CD   OE1  OE2                                  
REMARK 470     ARG D  37    NE   CZ   NH1  NH2                                  
REMARK 470     LYS D  51    CD   CE   NZ                                        
REMARK 470     LYS D  79    CE   NZ                                             
REMARK 470     LYS D  84    CE   NZ                                             
REMARK 470     GLU D 118    CG   CD   OE1  OE2                                  
REMARK 470     LYS D 123    CG   CD   CE   NZ                                   
REMARK 470     GLU D 211    CG   CD   OE1  OE2                                  
REMARK 470     ASP D 219    CB   CG   OD1  OD2                                  
REMARK 470     ASP D 230    CG   OD1  OD2                                       
REMARK 470     LYS D 418    CE   NZ                                             
REMARK 470     LYS D 431    CD   CE   NZ                                        
REMARK 470     GLU D 509    CD   OE1  OE2                                       
REMARK 470     LYS D 591    CE   NZ                                             
REMARK 470     LYS D 600    CG   CD   CE   NZ                                   
REMARK 470     GLU D 608    CG   CD   OE1  OE2                                  
REMARK 470     GLU D 610    CG   CD   OE1  OE2                                  
REMARK 470     LYS D 611    CG   CD   CE   NZ                                   
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS                                      
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3)               
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   RES CSSEQI ATM2   DEVIATION                     
REMARK 500    GLY B 270   N     GLY B 270   CA     -0.091                       
REMARK 500    TYR D  87   CA    TYR D  87   CB      0.143                       
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND ANGLES                                       
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1)              
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   ATM2   ATM3                                     
REMARK 500    ARG A   6   NE  -  CZ  -  NH1 ANGL. DEV. =   3.5 DEGREES          
REMARK 500    ARG A   6   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.2 DEGREES          
REMARK 500    ASP A   8   CB  -  CG  -  OD2 ANGL. DEV. =  -5.5 DEGREES          
REMARK 500    ASP A  20   CB  -  CG  -  OD1 ANGL. DEV. =  11.9 DEGREES          
REMARK 500    ASP A  20   CB  -  CG  -  OD2 ANGL. DEV. =  -9.9 DEGREES          
REMARK 500    ARG A  23   CD  -  NE  -  CZ  ANGL. DEV. =  13.7 DEGREES          
REMARK 500    ARG A  23   NE  -  CZ  -  NH1 ANGL. DEV. =   7.0 DEGREES          
REMARK 500    ARG A  23   NE  -  CZ  -  NH2 ANGL. DEV. =  -4.9 DEGREES          
REMARK 500    ALA A  41   CA  -  C   -  N   ANGL. DEV. =  19.9 DEGREES          
REMARK 500    ALA A  41   O   -  C   -  N   ANGL. DEV. = -14.8 DEGREES          
REMARK 500    GLU A  42   C   -  N   -  CA  ANGL. DEV. =  25.8 DEGREES          
REMARK 500    GLU A  52   CA  -  C   -  N   ANGL. DEV. =  14.1 DEGREES          
REMARK 500    GLU A  52   O   -  C   -  N   ANGL. DEV. = -10.1 DEGREES          
REMARK 500    ASP A  53   C   -  N   -  CA  ANGL. DEV. =  16.3 DEGREES          
REMARK 500    ASP A  53   N   -  CA  -  CB  ANGL. DEV. =  11.6 DEGREES          
REMARK 500    ASP A  53   CB  -  CG  -  OD1 ANGL. DEV. =   7.4 DEGREES          
REMARK 500    VAL A  54   CA  -  C   -  N   ANGL. DEV. =  14.7 DEGREES          
REMARK 500    TYR A  55   O   -  C   -  N   ANGL. DEV. = -10.2 DEGREES          
REMARK 500    TYR A  64   CB  -  CG  -  CD2 ANGL. DEV. =   3.6 DEGREES          
REMARK 500    PRO A  69   O   -  C   -  N   ANGL. DEV. = -12.0 DEGREES          
REMARK 500    PHE A  70   CB  -  CG  -  CD1 ANGL. DEV. =   4.2 DEGREES          
REMARK 500    TYR A  79   CB  -  CG  -  CD2 ANGL. DEV. =  -8.5 DEGREES          
REMARK 500    TYR A  79   CB  -  CG  -  CD1 ANGL. DEV. =   6.0 DEGREES          
REMARK 500    ALA A  80   C   -  N   -  CA  ANGL. DEV. =  16.0 DEGREES          
REMARK 500    ARG A  82   CD  -  NE  -  CZ  ANGL. DEV. =  18.3 DEGREES          
REMARK 500    ARG A  82   NE  -  CZ  -  NH1 ANGL. DEV. =   3.5 DEGREES          
REMARK 500    TYR A  89   CB  -  CG  -  CD1 ANGL. DEV. =   3.7 DEGREES          
REMARK 500    ARG A 103   CD  -  NE  -  CZ  ANGL. DEV. =  26.4 DEGREES          
REMARK 500    ARG A 103   NE  -  CZ  -  NH2 ANGL. DEV. =   3.2 DEGREES          
REMARK 500    ARG A 123   CD  -  NE  -  CZ  ANGL. DEV. =  15.5 DEGREES          
REMARK 500    ARG A 123   NE  -  CZ  -  NH2 ANGL. DEV. =  -4.9 DEGREES          
REMARK 500    ARG A 131   CD  -  NE  -  CZ  ANGL. DEV. =  18.2 DEGREES          
REMARK 500    ARG A 131   NE  -  CZ  -  NH1 ANGL. DEV. =   6.3 DEGREES          
REMARK 500    ARG A 131   NE  -  CZ  -  NH2 ANGL. DEV. =  -5.4 DEGREES          
REMARK 500    GLY A 134   C   -  N   -  CA  ANGL. DEV. =  12.8 DEGREES          
REMARK 500    ASP A 144   CB  -  CG  -  OD1 ANGL. DEV. =  -6.6 DEGREES          
REMARK 500    ARG A 150   NH1 -  CZ  -  NH2 ANGL. DEV. =   7.6 DEGREES          
REMARK 500    ARG A 150   NE  -  CZ  -  NH2 ANGL. DEV. =  -5.6 DEGREES          
REMARK 500    ASP A 159   CB  -  CG  -  OD1 ANGL. DEV. =   7.1 DEGREES          
REMARK 500    MET A 161   CA  -  CB  -  CG  ANGL. DEV. =  13.0 DEGREES          
REMARK 500    VAL A 163   CG1 -  CB  -  CG2 ANGL. DEV. = -10.8 DEGREES          
REMARK 500    GLU A 183   OE1 -  CD  -  OE2 ANGL. DEV. =  11.2 DEGREES          
REMARK 500    GLY A 186   C   -  N   -  CA  ANGL. DEV. =  15.8 DEGREES          
REMARK 500    GLU A 190   O   -  C   -  N   ANGL. DEV. =  -9.8 DEGREES          
REMARK 500    THR A 195   CA  -  CB  -  CG2 ANGL. DEV. =   8.5 DEGREES          
REMARK 500    ASN A 198   N   -  CA  -  CB  ANGL. DEV. = -11.9 DEGREES          
REMARK 500    ARG A 207   CG  -  CD  -  NE  ANGL. DEV. =  16.0 DEGREES          
REMARK 500    ARG A 207   N   -  CA  -  C   ANGL. DEV. =  16.9 DEGREES          
REMARK 500    TYR A 210   CB  -  CG  -  CD2 ANGL. DEV. =   4.0 DEGREES          
REMARK 500    TYR A 210   CG  -  CD1 -  CE1 ANGL. DEV. =   7.0 DEGREES          
REMARK 500                                                                      
REMARK 500 THIS ENTRY HAS     770 ANGLE DEVIATIONS.                             
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    THR A   3      -56.16   -129.58                                   
REMARK 500    LEU A   4       72.92     52.86                                   
REMARK 500    ALA A  15       74.67     32.35                                   
REMARK 500    GLN A  43       30.75     70.91                                   
REMARK 500    GLU A  52       -7.91    -54.72                                   
REMARK 500    LYS A  56      -59.30    -26.23                                   
REMARK 500    MET A  78     -130.28     41.20                                   
REMARK 500    SER A  93     -116.97     48.55                                   
REMARK 500    PRO A 157      106.75    -59.85                                   
REMARK 500    ASN A 168      -51.59   -128.32                                   
REMARK 500    ALA A 170       36.19    -83.00                                   
REMARK 500    ASN A 198       57.25     38.34                                   
REMARK 500    VAL A 206      -10.09   -148.67                                   
REMARK 500    PRO A 214      -79.47    -36.44                                   
REMARK 500    ILE A 240       95.53    -69.89                                   
REMARK 500    PHE A 280      -14.00   -141.49                                   
REMARK 500    HIS A 359       55.46     77.68                                   
REMARK 500    ALA A 373     -169.20   -164.52                                   
REMARK 500    ASP A 401       79.56     49.22                                   
REMARK 500    MET A 542       21.40     81.32                                   
REMARK 500    GLU A 573      -72.45    -44.65                                   
REMARK 500    ASP A 727       67.76   -113.80                                   
REMARK 500    LEU B  23      -70.93   -122.59                                   
REMARK 500    THR B  97      -68.01    -99.78                                   
REMARK 500    ALA B 144     -139.14   -153.20                                   
REMARK 500    LEU B 158       94.54    -69.39                                   
REMARK 500    ASP B 171       77.25   -155.63                                   
REMARK 500    ASP B 187       33.71    -89.37                                   
REMARK 500    PRO B 189      107.30    -58.42                                   
REMARK 500    ALA B 190      -55.56    -28.23                                   
REMARK 500    LYS B 191        1.47    -63.05                                   
REMARK 500    ASP B 200       79.17   -164.14                                   
REMARK 500    SER B 228      151.93    -46.47                                   
REMARK 500    GLN B 269       20.95    -65.73                                   
REMARK 500    ASP B 278        2.22    -64.77                                   
REMARK 500    THR B 435     -150.82    -76.67                                   
REMARK 500    VAL B 463      -52.22   -129.96                                   
REMARK 500    SER B 473     -159.86   -115.08                                   
REMARK 500    SER B 569      175.21    179.29                                   
REMARK 500    PHE B 602        0.66    -68.23                                   
REMARK 500    THR C   3      -39.25   -173.11                                   
REMARK 500    LEU C   4       75.29     39.27                                   
REMARK 500    ASP C   8       -4.91    -46.04                                   
REMARK 500    ASN C  14       41.33   -100.32                                   
REMARK 500    ALA C  15       85.40     22.22                                   
REMARK 500    ALA C  22      -71.21    -41.43                                   
REMARK 500    GLU C  52       -4.79    -59.98                                   
REMARK 500    LYS C  56      -60.63    -10.59                                   
REMARK 500    PRO C  69       40.51    -95.43                                   
REMARK 500    PHE C  70       45.09     30.98                                   
REMARK 500                                                                      
REMARK 500 THIS ENTRY HAS      87 RAMACHANDRAN OUTLIERS.                        
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: MAIN CHAIN PLANARITY                                       
REMARK 500                                                                      
REMARK 500 THE FOLLOWING RESIDUES HAVE A PSEUDO PLANARITY                       
REMARK 500 TORSION ANGLE, C(I) - CA(I) - N(I+1) - O(I), GREATER                 
REMARK 500 10.0 DEGREES. (M=MODEL NUMBER; RES=RESIDUE NAME;                     
REMARK 500 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER;                            
REMARK 500 I=INSERTION CODE).                                                   
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        ANGLE                                           
REMARK 500    GLY A 405         10.44                                           
REMARK 500    GLY B 401         10.79                                           
REMARK 500    ALA C 593         10.05                                           
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 620                                                                      
REMARK 620 METAL COORDINATION                                                   
REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE):                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                             B12 A 800  CO                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HIS A 610   NE2                                                    
REMARK 620 2 B12 A 800   N21  86.8                                              
REMARK 620 3 B12 A 800   N22  88.4  83.9                                        
REMARK 620 4 B12 A 800   N23  94.9 170.7 105.2                                  
REMARK 620 5 B12 A 800   N24  97.5  78.1 160.7  92.6                            
REMARK 620 N                    1     2     3     4                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                             B12 C 800  CO                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HIS C 610   NE2                                                    
REMARK 620 2 B12 C 800   N21  91.7                                              
REMARK 620 3 B12 C 800   N22  89.5  86.1                                        
REMARK 620 4 B12 C 800   N23  84.4 163.9 109.4                                  
REMARK 620 5 B12 C 800   N24  97.9  80.9 165.2  84.2                            
REMARK 620 6 HOH C2475   O   169.0  97.0  97.7  85.3  77.1                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE B12 A 800                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE DCA A 801                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE B12 C 800                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE DCA C 801                 
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1REQ   RELATED DB: PDB                                   
REMARK 900 METHYLMALONYL-COA MUTASE                                             
REMARK 900 RELATED ID: 2REQ   RELATED DB: PDB                                   
REMARK 900 METHYLMALONYL-COA MUTASE, NON-PRODUCTIVE COA COMPLEX, IN OPEN        
REMARK 900 CONFORMATION REPRESENTING SUBSTRATE-FREE STATE                       
REMARK 900 RELATED ID: 3REQ   RELATED DB: PDB                                   
REMARK 900 METHYLMALONYL-COA MUTASE, SUBSTRATE-FREE STATE (POOR QUALITY         
REMARK 900 STRUCTURE)                                                           
REMARK 900 RELATED ID: 4REQ   RELATED DB: PDB                                   
REMARK 900 METHYLMALONYL-COA MUTASE SUBSTRATE COMPLEX                           
REMARK 900 RELATED ID: 5REQ   RELATED DB: PDB                                   
REMARK 900 METHYLMALONYL-COA MUTASE, Y89F MUTANT, SUBSTRATE COMPLEX             
REMARK 900 RELATED ID: 6REQ   RELATED DB: PDB                                   
REMARK 900 METHYLMALONYL-COA MUTASE, 3-CARBOXYPROPYL-COA INHIBITOR COMPLEX      
REMARK 900 RELATED ID: 7REQ   RELATED DB: PDB                                   
REMARK 900 METHYLMALONYL-COA MUTASE, 2-CARBOXYPROPYL-COA INHIBITOR COMPLEX      
REMARK 999                                                                      
REMARK 999 SEQUENCE                                                             
REMARK 999 THE SEQUENCES IN THE SWISSPROT DATABASE                              
REMARK 999 (MUTB, ALPHA CHAIN AND MUTA, ALPHA CHAIN) CONTAIN                    
REMARK 999 N-TERMINAL METHIONINES WHICH ARE PROCESSED OFF THE                   
REMARK 999 EXPRESSED (AND WILD-TYPE) PROTEINS.  THE EXPRESSED CHAINS            
REMARK 999 ARE NUMBERED FROM RESIDUE 2.  THE BETA CHAIN (MUTA) ALSO             
REMARK 999 HAS 3 CORRECTIONS IN THE SEQUENCE COMPARED TO THE                    
REMARK 999 SWISSPROT DATABASE.                                                  
REMARK 999 THE ELECTRON DENSITY MAPS SHOW NO ADENOSYL GROUP ATTACHED            
REMARK 999 TO THE COBALT ATOM, AND SPECTRA FROM SIMILAR CRYSTALS SHOW           
REMARK 999 EVIDENCE OF SUBSTANTIAL REDUCTION OF COIII TO COII, WHICH            
REMARK 999 IS 5-COORDINATE. THE COBALAMIN IN THIS CRYSTAL STRUCTURE IS          
REMARK 999 BEST CONSIDERED AS REDUCED COB(II)ALAMIN (OR B12R).                  
DBREF  1E1C A    2   728  UNP    P11653   MUTB_PROFR       1    727             
DBREF  1E1C B    1   638  UNP    P11652   MUTA_PROFR       1    637             
DBREF  1E1C C    2   728  UNP    P11653   MUTB_PROFR       1    727             
DBREF  1E1C D    1   638  UNP    P11652   MUTA_PROFR       1    637             
SEQADV 1E1C GLY B  203  UNP  P11652    ALA   203 SEE REMARK 999                 
SEQADV 1E1C GLU B  330  UNP  P11652    ASP   330 SEE REMARK 999                 
SEQADV 1E1C LEU B  331  UNP  P11652    VAL   331 SEE REMARK 999                 
SEQADV 1E1C GLY D  203  UNP  P11652    ALA   203 SEE REMARK 999                 
SEQADV 1E1C GLU D  330  UNP  P11652    ASP   330 SEE REMARK 999                 
SEQADV 1E1C LEU D  331  UNP  P11652    VAL   331 SEE REMARK 999                 
SEQADV 1E1C ALA A  244  UNP  P11652    HIS   244 ENGINEERED MUTATION            
SEQADV 1E1C ALA C  244  UNP  P11652    HIS   244 ENGINEERED MUTATION            
SEQRES   1 A  727  SER THR LEU PRO ARG PHE ASP SER VAL ASP LEU GLY ASN          
SEQRES   2 A  727  ALA PRO VAL PRO ALA ASP ALA ALA ARG ARG PHE GLU GLU          
SEQRES   3 A  727  LEU ALA ALA LYS ALA GLY THR GLY GLU ALA TRP GLU THR          
SEQRES   4 A  727  ALA GLU GLN ILE PRO VAL GLY THR LEU PHE ASN GLU ASP          
SEQRES   5 A  727  VAL TYR LYS ASP MET ASP TRP LEU ASP THR TYR ALA GLY          
SEQRES   6 A  727  ILE PRO PRO PHE VAL HIS GLY PRO TYR ALA THR MET TYR          
SEQRES   7 A  727  ALA PHE ARG PRO TRP THR ILE ARG GLN TYR ALA GLY PHE          
SEQRES   8 A  727  SER THR ALA LYS GLU SER ASN ALA PHE TYR ARG ARG ASN          
SEQRES   9 A  727  LEU ALA ALA GLY GLN LYS GLY LEU SER VAL ALA PHE ASP          
SEQRES  10 A  727  LEU PRO THR HIS ARG GLY TYR ASP SER ASP ASN PRO ARG          
SEQRES  11 A  727  VAL ALA GLY ASP VAL GLY MET ALA GLY VAL ALA ILE ASP          
SEQRES  12 A  727  SER ILE TYR ASP MET ARG GLU LEU PHE ALA GLY ILE PRO          
SEQRES  13 A  727  LEU ASP GLN MET SER VAL SER MET THR MET ASN GLY ALA          
SEQRES  14 A  727  VAL LEU PRO ILE LEU ALA LEU TYR VAL VAL THR ALA GLU          
SEQRES  15 A  727  GLU GLN GLY VAL LYS PRO GLU GLN LEU ALA GLY THR ILE          
SEQRES  16 A  727  GLN ASN ASP ILE LEU LYS GLU PHE MET VAL ARG ASN THR          
SEQRES  17 A  727  TYR ILE TYR PRO PRO GLN PRO SER MET ARG ILE ILE SER          
SEQRES  18 A  727  GLU ILE PHE ALA TYR THR SER ALA ASN MET PRO LYS TRP          
SEQRES  19 A  727  ASN SER ILE SER ILE SER GLY TYR ALA MET GLN GLU ALA          
SEQRES  20 A  727  GLY ALA THR ALA ASP ILE GLU MET ALA TYR THR LEU ALA          
SEQRES  21 A  727  ASP GLY VAL ASP TYR ILE ARG ALA GLY GLU SER VAL GLY          
SEQRES  22 A  727  LEU ASN VAL ASP GLN PHE ALA PRO ARG LEU SER PHE PHE          
SEQRES  23 A  727  TRP GLY ILE GLY MET ASN PHE PHE MET GLU VAL ALA LYS          
SEQRES  24 A  727  LEU ARG ALA ALA ARG MET LEU TRP ALA LYS LEU VAL HIS          
SEQRES  25 A  727  GLN PHE GLY PRO LYS ASN PRO LYS SER MET SER LEU ARG          
SEQRES  26 A  727  THR HIS SER GLN THR SER GLY TRP SER LEU THR ALA GLN          
SEQRES  27 A  727  ASP VAL TYR ASN ASN VAL VAL ARG THR CYS ILE GLU ALA          
SEQRES  28 A  727  MET ALA ALA THR GLN GLY HIS THR GLN SER LEU HIS THR          
SEQRES  29 A  727  ASN SER LEU ASP GLU ALA ILE ALA LEU PRO THR ASP PHE          
SEQRES  30 A  727  SER ALA ARG ILE ALA ARG ASN THR GLN LEU PHE LEU GLN          
SEQRES  31 A  727  GLN GLU SER GLY THR THR ARG VAL ILE ASP PRO TRP SER          
SEQRES  32 A  727  GLY SER ALA TYR VAL GLU GLU LEU THR TRP ASP LEU ALA          
SEQRES  33 A  727  ARG LYS ALA TRP GLY HIS ILE GLN GLU VAL GLU LYS VAL          
SEQRES  34 A  727  GLY GLY MET ALA LYS ALA ILE GLU LYS GLY ILE PRO LYS          
SEQRES  35 A  727  MET ARG ILE GLU GLU ALA ALA ALA ARG THR GLN ALA ARG          
SEQRES  36 A  727  ILE ASP SER GLY ARG GLN PRO LEU ILE GLY VAL ASN LYS          
SEQRES  37 A  727  TYR ARG LEU GLU HIS GLU PRO PRO LEU ASP VAL LEU LYS          
SEQRES  38 A  727  VAL ASP ASN SER THR VAL LEU ALA GLU GLN LYS ALA LYS          
SEQRES  39 A  727  LEU VAL LYS LEU ARG ALA GLU ARG ASP PRO GLU LYS VAL          
SEQRES  40 A  727  LYS ALA ALA LEU ASP LYS ILE THR TRP ALA ALA GLY ASN          
SEQRES  41 A  727  PRO ASP ASP LYS ASP PRO ASP ARG ASN LEU LEU LYS LEU          
SEQRES  42 A  727  CYS ILE ASP ALA GLY ARG ALA MET ALA THR VAL GLY GLU          
SEQRES  43 A  727  MET SER ASP ALA LEU GLU LYS VAL PHE GLY ARG TYR THR          
SEQRES  44 A  727  ALA GLN ILE ARG THR ILE SER GLY VAL TYR SER LYS GLU          
SEQRES  45 A  727  VAL LYS ASN THR PRO GLU VAL GLU GLU ALA ARG GLU LEU          
SEQRES  46 A  727  VAL GLU GLU PHE GLU GLN ALA GLU GLY ARG ARG PRO ARG          
SEQRES  47 A  727  ILE LEU LEU ALA LYS MET GLY GLN ASP GLY HIS ASP ARG          
SEQRES  48 A  727  GLY GLN LYS VAL ILE ALA THR ALA TYR ALA ASP LEU GLY          
SEQRES  49 A  727  PHE ASP VAL ASP VAL GLY PRO LEU PHE GLN THR PRO GLU          
SEQRES  50 A  727  GLU THR ALA ARG GLN ALA VAL GLU ALA ASP VAL HIS VAL          
SEQRES  51 A  727  VAL GLY VAL SER SER LEU ALA GLY GLY HIS LEU THR LEU          
SEQRES  52 A  727  VAL PRO ALA LEU ARG LYS GLU LEU ASP LYS LEU GLY ARG          
SEQRES  53 A  727  PRO ASP ILE LEU ILE THR VAL GLY GLY VAL ILE PRO GLU          
SEQRES  54 A  727  GLN ASP PHE ASP GLU LEU ARG LYS ASP GLY ALA VAL GLU          
SEQRES  55 A  727  ILE TYR THR PRO GLY THR VAL ILE PRO GLU SER ALA ILE          
SEQRES  56 A  727  SER LEU VAL LYS LYS LEU ARG ALA SER LEU ASP ALA              
SEQRES   1 B  637  SER SER THR ASP GLN GLY THR ASN PRO ALA ASP THR ASP          
SEQRES   2 B  637  ASP LEU THR PRO THR THR LEU SER LEU ALA GLY ASP PHE          
SEQRES   3 B  637  PRO LYS ALA THR GLU GLU GLN TRP GLU ARG GLU VAL GLU          
SEQRES   4 B  637  LYS VAL LEU ASN ARG GLY ARG PRO PRO GLU LYS GLN LEU          
SEQRES   5 B  637  THR PHE ALA GLU CYS LEU LYS ARG LEU THR VAL HIS THR          
SEQRES   6 B  637  VAL ASP GLY ILE ASP ILE VAL PRO MET TYR ARG PRO LYS          
SEQRES   7 B  637  ASP ALA PRO LYS LYS LEU GLY TYR PRO GLY VAL ALA PRO          
SEQRES   8 B  637  PHE THR ARG GLY THR THR VAL ARG ASN GLY ASP MET ASP          
SEQRES   9 B  637  ALA TRP ASP VAL ARG ALA LEU HIS GLU ASP PRO ASP GLU          
SEQRES  10 B  637  LYS PHE THR ARG LYS ALA ILE LEU GLU GLY LEU GLU ARG          
SEQRES  11 B  637  GLY VAL THR SER LEU LEU LEU ARG VAL ASP PRO ASP ALA          
SEQRES  12 B  637  ILE ALA PRO GLU HIS LEU ASP GLU VAL LEU SER ASP VAL          
SEQRES  13 B  637  LEU LEU GLU MET THR LYS VAL GLU VAL PHE SER ARG TYR          
SEQRES  14 B  637  ASP GLN GLY ALA ALA ALA GLU ALA LEU VAL SER VAL TYR          
SEQRES  15 B  637  GLU ARG SER ASP LYS PRO ALA LYS ASP LEU ALA LEU ASN          
SEQRES  16 B  637  LEU GLY LEU ASP PRO ILE GLY PHE ALA ALA LEU GLN GLY          
SEQRES  17 B  637  THR GLU PRO ASP LEU THR VAL LEU GLY ASP TRP VAL ARG          
SEQRES  18 B  637  ARG LEU ALA LYS PHE SER PRO ASP SER ARG ALA VAL THR          
SEQRES  19 B  637  ILE ASP ALA ASN ILE TYR HIS ASN ALA GLY ALA GLY ASP          
SEQRES  20 B  637  VAL ALA GLU LEU ALA TRP ALA LEU ALA THR GLY ALA GLU          
SEQRES  21 B  637  TYR VAL ARG ALA LEU VAL GLU GLN GLY PHE THR ALA THR          
SEQRES  22 B  637  GLU ALA PHE ASP THR ILE ASN PHE ARG VAL THR ALA THR          
SEQRES  23 B  637  HIS ASP GLN PHE LEU THR ILE ALA ARG LEU ARG ALA LEU          
SEQRES  24 B  637  ARG GLU ALA TRP ALA ARG ILE GLY GLU VAL PHE GLY VAL          
SEQRES  25 B  637  ASP GLU ASP LYS ARG GLY ALA ARG GLN ASN ALA ILE THR          
SEQRES  26 B  637  SER TRP ARG GLU LEU THR ARG GLU ASP PRO TYR VAL ASN          
SEQRES  27 B  637  ILE LEU ARG GLY SER ILE ALA THR PHE SER ALA SER VAL          
SEQRES  28 B  637  GLY GLY ALA GLU SER ILE THR THR LEU PRO PHE THR GLN          
SEQRES  29 B  637  ALA LEU GLY LEU PRO GLU ASP ASP PHE PRO LEU ARG ILE          
SEQRES  30 B  637  ALA ARG ASN THR GLY ILE VAL LEU ALA GLU GLU VAL ASN          
SEQRES  31 B  637  ILE GLY ARG VAL ASN ASP PRO ALA GLY GLY SER TYR TYR          
SEQRES  32 B  637  VAL GLU SER LEU THR ARG SER LEU ALA ASP ALA ALA TRP          
SEQRES  33 B  637  LYS GLU PHE GLN GLU VAL GLU LYS LEU GLY GLY MET SER          
SEQRES  34 B  637  LYS ALA VAL MET THR GLU HIS VAL THR LYS VAL LEU ASP          
SEQRES  35 B  637  ALA CYS ASN ALA GLU ARG ALA LYS ARG LEU ALA ASN ARG          
SEQRES  36 B  637  LYS GLN PRO ILE THR ALA VAL SER GLU PHE PRO MET ILE          
SEQRES  37 B  637  GLY ALA ARG SER ILE GLU THR LYS PRO PHE PRO ALA ALA          
SEQRES  38 B  637  PRO ALA ARG LYS GLY LEU ALA TRP HIS ARG ASP SER GLU          
SEQRES  39 B  637  VAL PHE GLU GLN LEU MET ASP ARG SER THR SER VAL SER          
SEQRES  40 B  637  GLU ARG PRO LYS VAL PHE LEU ALA CYS LEU GLY THR ARG          
SEQRES  41 B  637  ARG ASP PHE GLY GLY ARG GLU GLY PHE SER SER PRO VAL          
SEQRES  42 B  637  TRP HIS ILE ALA GLY ILE ASP THR PRO GLN VAL GLU GLY          
SEQRES  43 B  637  GLY THR THR ALA GLU ILE VAL GLU ALA PHE LYS LYS SER          
SEQRES  44 B  637  GLY ALA GLN VAL ALA ASP LEU CYS SER SER ALA LYS VAL          
SEQRES  45 B  637  TYR ALA GLN GLN GLY LEU GLU VAL ALA LYS ALA LEU LYS          
SEQRES  46 B  637  ALA ALA GLY ALA LYS ALA LEU TYR LEU SER GLY ALA PHE          
SEQRES  47 B  637  LYS GLU PHE GLY ASP ASP ALA ALA GLU ALA GLU LYS LEU          
SEQRES  48 B  637  ILE ASP GLY ARG LEU PHE MET GLY MET ASP VAL VAL ASP          
SEQRES  49 B  637  THR LEU SER SER THR LEU ASP ILE LEU GLY VAL ALA LYS          
SEQRES   1 C  727  SER THR LEU PRO ARG PHE ASP SER VAL ASP LEU GLY ASN          
SEQRES   2 C  727  ALA PRO VAL PRO ALA ASP ALA ALA ARG ARG PHE GLU GLU          
SEQRES   3 C  727  LEU ALA ALA LYS ALA GLY THR GLY GLU ALA TRP GLU THR          
SEQRES   4 C  727  ALA GLU GLN ILE PRO VAL GLY THR LEU PHE ASN GLU ASP          
SEQRES   5 C  727  VAL TYR LYS ASP MET ASP TRP LEU ASP THR TYR ALA GLY          
SEQRES   6 C  727  ILE PRO PRO PHE VAL HIS GLY PRO TYR ALA THR MET TYR          
SEQRES   7 C  727  ALA PHE ARG PRO TRP THR ILE ARG GLN TYR ALA GLY PHE          
SEQRES   8 C  727  SER THR ALA LYS GLU SER ASN ALA PHE TYR ARG ARG ASN          
SEQRES   9 C  727  LEU ALA ALA GLY GLN LYS GLY LEU SER VAL ALA PHE ASP          
SEQRES  10 C  727  LEU PRO THR HIS ARG GLY TYR ASP SER ASP ASN PRO ARG          
SEQRES  11 C  727  VAL ALA GLY ASP VAL GLY MET ALA GLY VAL ALA ILE ASP          
SEQRES  12 C  727  SER ILE TYR ASP MET ARG GLU LEU PHE ALA GLY ILE PRO          
SEQRES  13 C  727  LEU ASP GLN MET SER VAL SER MET THR MET ASN GLY ALA          
SEQRES  14 C  727  VAL LEU PRO ILE LEU ALA LEU TYR VAL VAL THR ALA GLU          
SEQRES  15 C  727  GLU GLN GLY VAL LYS PRO GLU GLN LEU ALA GLY THR ILE          
SEQRES  16 C  727  GLN ASN ASP ILE LEU LYS GLU PHE MET VAL ARG ASN THR          
SEQRES  17 C  727  TYR ILE TYR PRO PRO GLN PRO SER MET ARG ILE ILE SER          
SEQRES  18 C  727  GLU ILE PHE ALA TYR THR SER ALA ASN MET PRO LYS TRP          
SEQRES  19 C  727  ASN SER ILE SER ILE SER GLY TYR ALA MET GLN GLU ALA          
SEQRES  20 C  727  GLY ALA THR ALA ASP ILE GLU MET ALA TYR THR LEU ALA          
SEQRES  21 C  727  ASP GLY VAL ASP TYR ILE ARG ALA GLY GLU SER VAL GLY          
SEQRES  22 C  727  LEU ASN VAL ASP GLN PHE ALA PRO ARG LEU SER PHE PHE          
SEQRES  23 C  727  TRP GLY ILE GLY MET ASN PHE PHE MET GLU VAL ALA LYS          
SEQRES  24 C  727  LEU ARG ALA ALA ARG MET LEU TRP ALA LYS LEU VAL HIS          
SEQRES  25 C  727  GLN PHE GLY PRO LYS ASN PRO LYS SER MET SER LEU ARG          
SEQRES  26 C  727  THR HIS SER GLN THR SER GLY TRP SER LEU THR ALA GLN          
SEQRES  27 C  727  ASP VAL TYR ASN ASN VAL VAL ARG THR CYS ILE GLU ALA          
SEQRES  28 C  727  MET ALA ALA THR GLN GLY HIS THR GLN SER LEU HIS THR          
SEQRES  29 C  727  ASN SER LEU ASP GLU ALA ILE ALA LEU PRO THR ASP PHE          
SEQRES  30 C  727  SER ALA ARG ILE ALA ARG ASN THR GLN LEU PHE LEU GLN          
SEQRES  31 C  727  GLN GLU SER GLY THR THR ARG VAL ILE ASP PRO TRP SER          
SEQRES  32 C  727  GLY SER ALA TYR VAL GLU GLU LEU THR TRP ASP LEU ALA          
SEQRES  33 C  727  ARG LYS ALA TRP GLY HIS ILE GLN GLU VAL GLU LYS VAL          
SEQRES  34 C  727  GLY GLY MET ALA LYS ALA ILE GLU LYS GLY ILE PRO LYS          
SEQRES  35 C  727  MET ARG ILE GLU GLU ALA ALA ALA ARG THR GLN ALA ARG          
SEQRES  36 C  727  ILE ASP SER GLY ARG GLN PRO LEU ILE GLY VAL ASN LYS          
SEQRES  37 C  727  TYR ARG LEU GLU HIS GLU PRO PRO LEU ASP VAL LEU LYS          
SEQRES  38 C  727  VAL ASP ASN SER THR VAL LEU ALA GLU GLN LYS ALA LYS          
SEQRES  39 C  727  LEU VAL LYS LEU ARG ALA GLU ARG ASP PRO GLU LYS VAL          
SEQRES  40 C  727  LYS ALA ALA LEU ASP LYS ILE THR TRP ALA ALA GLY ASN          
SEQRES  41 C  727  PRO ASP ASP LYS ASP PRO ASP ARG ASN LEU LEU LYS LEU          
SEQRES  42 C  727  CYS ILE ASP ALA GLY ARG ALA MET ALA THR VAL GLY GLU          
SEQRES  43 C  727  MET SER ASP ALA LEU GLU LYS VAL PHE GLY ARG TYR THR          
SEQRES  44 C  727  ALA GLN ILE ARG THR ILE SER GLY VAL TYR SER LYS GLU          
SEQRES  45 C  727  VAL LYS ASN THR PRO GLU VAL GLU GLU ALA ARG GLU LEU          
SEQRES  46 C  727  VAL GLU GLU PHE GLU GLN ALA GLU GLY ARG ARG PRO ARG          
SEQRES  47 C  727  ILE LEU LEU ALA LYS MET GLY GLN ASP GLY HIS ASP ARG          
SEQRES  48 C  727  GLY GLN LYS VAL ILE ALA THR ALA TYR ALA ASP LEU GLY          
SEQRES  49 C  727  PHE ASP VAL ASP VAL GLY PRO LEU PHE GLN THR PRO GLU          
SEQRES  50 C  727  GLU THR ALA ARG GLN ALA VAL GLU ALA ASP VAL HIS VAL          
SEQRES  51 C  727  VAL GLY VAL SER SER LEU ALA GLY GLY HIS LEU THR LEU          
SEQRES  52 C  727  VAL PRO ALA LEU ARG LYS GLU LEU ASP LYS LEU GLY ARG          
SEQRES  53 C  727  PRO ASP ILE LEU ILE THR VAL GLY GLY VAL ILE PRO GLU          
SEQRES  54 C  727  GLN ASP PHE ASP GLU LEU ARG LYS ASP GLY ALA VAL GLU          
SEQRES  55 C  727  ILE TYR THR PRO GLY THR VAL ILE PRO GLU SER ALA ILE          
SEQRES  56 C  727  SER LEU VAL LYS LYS LEU ARG ALA SER LEU ASP ALA              
SEQRES   1 D  637  SER SER THR ASP GLN GLY THR ASN PRO ALA ASP THR ASP          
SEQRES   2 D  637  ASP LEU THR PRO THR THR LEU SER LEU ALA GLY ASP PHE          
SEQRES   3 D  637  PRO LYS ALA THR GLU GLU GLN TRP GLU ARG GLU VAL GLU          
SEQRES   4 D  637  LYS VAL LEU ASN ARG GLY ARG PRO PRO GLU LYS GLN LEU          
SEQRES   5 D  637  THR PHE ALA GLU CYS LEU LYS ARG LEU THR VAL HIS THR          
SEQRES   6 D  637  VAL ASP GLY ILE ASP ILE VAL PRO MET TYR ARG PRO LYS          
SEQRES   7 D  637  ASP ALA PRO LYS LYS LEU GLY TYR PRO GLY VAL ALA PRO          
SEQRES   8 D  637  PHE THR ARG GLY THR THR VAL ARG ASN GLY ASP MET ASP          
SEQRES   9 D  637  ALA TRP ASP VAL ARG ALA LEU HIS GLU ASP PRO ASP GLU          
SEQRES  10 D  637  LYS PHE THR ARG LYS ALA ILE LEU GLU GLY LEU GLU ARG          
SEQRES  11 D  637  GLY VAL THR SER LEU LEU LEU ARG VAL ASP PRO ASP ALA          
SEQRES  12 D  637  ILE ALA PRO GLU HIS LEU ASP GLU VAL LEU SER ASP VAL          
SEQRES  13 D  637  LEU LEU GLU MET THR LYS VAL GLU VAL PHE SER ARG TYR          
SEQRES  14 D  637  ASP GLN GLY ALA ALA ALA GLU ALA LEU VAL SER VAL TYR          
SEQRES  15 D  637  GLU ARG SER ASP LYS PRO ALA LYS ASP LEU ALA LEU ASN          
SEQRES  16 D  637  LEU GLY LEU ASP PRO ILE GLY PHE ALA ALA LEU GLN GLY          
SEQRES  17 D  637  THR GLU PRO ASP LEU THR VAL LEU GLY ASP TRP VAL ARG          
SEQRES  18 D  637  ARG LEU ALA LYS PHE SER PRO ASP SER ARG ALA VAL THR          
SEQRES  19 D  637  ILE ASP ALA ASN ILE TYR HIS ASN ALA GLY ALA GLY ASP          
SEQRES  20 D  637  VAL ALA GLU LEU ALA TRP ALA LEU ALA THR GLY ALA GLU          
SEQRES  21 D  637  TYR VAL ARG ALA LEU VAL GLU GLN GLY PHE THR ALA THR          
SEQRES  22 D  637  GLU ALA PHE ASP THR ILE ASN PHE ARG VAL THR ALA THR          
SEQRES  23 D  637  HIS ASP GLN PHE LEU THR ILE ALA ARG LEU ARG ALA LEU          
SEQRES  24 D  637  ARG GLU ALA TRP ALA ARG ILE GLY GLU VAL PHE GLY VAL          
SEQRES  25 D  637  ASP GLU ASP LYS ARG GLY ALA ARG GLN ASN ALA ILE THR          
SEQRES  26 D  637  SER TRP ARG GLU LEU THR ARG GLU ASP PRO TYR VAL ASN          
SEQRES  27 D  637  ILE LEU ARG GLY SER ILE ALA THR PHE SER ALA SER VAL          
SEQRES  28 D  637  GLY GLY ALA GLU SER ILE THR THR LEU PRO PHE THR GLN          
SEQRES  29 D  637  ALA LEU GLY LEU PRO GLU ASP ASP PHE PRO LEU ARG ILE          
SEQRES  30 D  637  ALA ARG ASN THR GLY ILE VAL LEU ALA GLU GLU VAL ASN          
SEQRES  31 D  637  ILE GLY ARG VAL ASN ASP PRO ALA GLY GLY SER TYR TYR          
SEQRES  32 D  637  VAL GLU SER LEU THR ARG SER LEU ALA ASP ALA ALA TRP          
SEQRES  33 D  637  LYS GLU PHE GLN GLU VAL GLU LYS LEU GLY GLY MET SER          
SEQRES  34 D  637  LYS ALA VAL MET THR GLU HIS VAL THR LYS VAL LEU ASP          
SEQRES  35 D  637  ALA CYS ASN ALA GLU ARG ALA LYS ARG LEU ALA ASN ARG          
SEQRES  36 D  637  LYS GLN PRO ILE THR ALA VAL SER GLU PHE PRO MET ILE          
SEQRES  37 D  637  GLY ALA ARG SER ILE GLU THR LYS PRO PHE PRO ALA ALA          
SEQRES  38 D  637  PRO ALA ARG LYS GLY LEU ALA TRP HIS ARG ASP SER GLU          
SEQRES  39 D  637  VAL PHE GLU GLN LEU MET ASP ARG SER THR SER VAL SER          
SEQRES  40 D  637  GLU ARG PRO LYS VAL PHE LEU ALA CYS LEU GLY THR ARG          
SEQRES  41 D  637  ARG ASP PHE GLY GLY ARG GLU GLY PHE SER SER PRO VAL          
SEQRES  42 D  637  TRP HIS ILE ALA GLY ILE ASP THR PRO GLN VAL GLU GLY          
SEQRES  43 D  637  GLY THR THR ALA GLU ILE VAL GLU ALA PHE LYS LYS SER          
SEQRES  44 D  637  GLY ALA GLN VAL ALA ASP LEU CYS SER SER ALA LYS VAL          
SEQRES  45 D  637  TYR ALA GLN GLN GLY LEU GLU VAL ALA LYS ALA LEU LYS          
SEQRES  46 D  637  ALA ALA GLY ALA LYS ALA LEU TYR LEU SER GLY ALA PHE          
SEQRES  47 D  637  LYS GLU PHE GLY ASP ASP ALA ALA GLU ALA GLU LYS LEU          
SEQRES  48 D  637  ILE ASP GLY ARG LEU PHE MET GLY MET ASP VAL VAL ASP          
SEQRES  49 D  637  THR LEU SER SER THR LEU ASP ILE LEU GLY VAL ALA LYS          
HET    B12  A 800      91                                                       
HET    DCA  A 801      47                                                       
HET    B12  C 800      91                                                       
HET    DCA  C 801      47                                                       
HETNAM     B12 COBALAMIN                                                        
HETNAM     DCA DESULFO-COENZYME A                                               
FORMUL   5  B12    2(C62 H89 CO N13 O14 P 2+)                                   
FORMUL   6  DCA    2(C21 H36 N7 O16 P3)                                         
FORMUL   9  HOH   *1525(H2 O)                                                   
HELIX    1   1 ARG A    6  VAL A   10  5                                   5    
HELIX    2   2 ASP A   20  GLY A   33  1                                  14    
HELIX    3   3 ASN A   51  LYS A   56  5                                   6    
HELIX    4   4 THR A   77  ARG A   82  1                                   6    
HELIX    5   5 THR A   94  ALA A  108  1                                  15    
HELIX    6   6 ASP A  118  ARG A  123  1                                   6    
HELIX    7   7 VAL A  132  VAL A  136  5                                   5    
HELIX    8   8 SER A  145  PHE A  153  1                                   9    
HELIX    9   9 ALA A  170  GLN A  185  1                                  16    
HELIX   10  10 LYS A  188  LEU A  192  5                                   5    
HELIX   11  11 ASP A  199  VAL A  206  1                                   8    
HELIX   12  12 PRO A  213  MET A  232  1                                  20    
HELIX   13  13 GLY A  242  GLY A  249  1                                   8    
HELIX   14  14 THR A  251  VAL A  273  1                                  23    
HELIX   15  15 ASN A  276  PHE A  280  5                                   5    
HELIX   16  16 PHE A  280  PRO A  282  5                                   3    
HELIX   17  17 ASN A  293  GLN A  314  1                                  22    
HELIX   18  18 ASN A  319  SER A  324  5                                   6    
HELIX   19  19 TYR A  342  HIS A  359  1                                  18    
HELIX   20  20 THR A  376  GLU A  393  1                                  18    
HELIX   21  21 SER A  406  VAL A  430  1                                  25    
HELIX   22  22 GLY A  432  LYS A  439  1                                   8    
HELIX   23  23 GLY A  440  GLY A  460  1                                  21    
HELIX   24  24 ASP A  484  ARG A  503  1                                  20    
HELIX   25  25 ASP A  504  ASN A  521  1                                  18    
HELIX   26  26 ASP A  526  ARG A  529  5                                   4    
HELIX   27  27 ASN A  530  ALA A  541  1                                  12    
HELIX   28  28 THR A  544  GLY A  557  1                                  14    
HELIX   29  29 VAL A  569  VAL A  574  1                                   6    
HELIX   30  30 THR A  577  GLY A  595  1                                  19    
HELIX   31  31 ASP A  611  LEU A  624  1                                  14    
HELIX   32  32 THR A  636  ALA A  647  1                                  12    
HELIX   33  33 GLY A  660  LEU A  675  1                                  16    
HELIX   34  34 PRO A  689  GLN A  691  5                                   3    
HELIX   35  35 ASP A  692  ASP A  699  1                                   8    
HELIX   36  36 VAL A  710  ASP A  727  1                                  18    
HELIX   37  37 LEU B   23  PHE B   27  5                                   5    
HELIX   38  38 THR B   31  ASN B   44  1                                  14    
HELIX   39  39 THR B   54  THR B   63  1                                  10    
HELIX   40  40 ARG B   77  ALA B   81  5                                   5    
HELIX   41  41 ASP B  117  GLU B  130  1                                  14    
HELIX   42  42 HIS B  149  LEU B  154  1                                   6    
HELIX   43  43 ASP B  171  ARG B  185  1                                  15    
HELIX   44  44 PRO B  189  LEU B  193  5                                   5    
HELIX   45  45 ASP B  200  GLY B  209  1                                  10    
HELIX   46  46 VAL B  216  ALA B  225  1                                  10    
HELIX   47  47 ALA B  238  ASN B  243  1                                   6    
HELIX   48  48 GLY B  247  GLN B  269  1                                  23    
HELIX   49  49 THR B  272  ASP B  278  1                                   7    
HELIX   50  50 ASP B  289  PHE B  311  1                                  23    
HELIX   51  51 ASP B  335  TYR B  337  5                                   3    
HELIX   52  52 VAL B  338  GLY B  353  1                                  16    
HELIX   53  53 ASP B  372  GLU B  389  1                                  18    
HELIX   54  54 ASN B  391  VAL B  395  5                                   5    
HELIX   55  55 SER B  402  LEU B  426  1                                  25    
HELIX   56  56 GLY B  428  THR B  435  1                                   8    
HELIX   57  57 GLU B  436  ASN B  455  1                                  20    
HELIX   58  58 SER B  494  VAL B  507  1                                  14    
HELIX   59  59 THR B  520  ALA B  538  1                                  19    
HELIX   60  60 THR B  549  GLY B  561  1                                  13    
HELIX   61  61 SER B  570  GLY B  578  1                                   9    
HELIX   62  62 GLN B  577  ALA B  588  1                                  12    
HELIX   63  63 ALA B  598  ASP B  604  5                                   7    
HELIX   64  64 ASP B  605  ILE B  613  1                                   9    
HELIX   65  65 ASP B  622  LEU B  634  1                                  13    
HELIX   66  66 ARG C    6  VAL C   10  5                                   5    
HELIX   67  67 ASP C   20  GLY C   33  1                                  14    
HELIX   68  68 ASP C   53  MET C   58  5                                   6    
HELIX   69  69 THR C   77  PHE C   81  5                                   5    
HELIX   70  70 THR C   94  ALA C  108  1                                  15    
HELIX   71  71 ASP C  118  ARG C  123  1                                   6    
HELIX   72  72 ASN C  129  ALA C  133  5                                   5    
HELIX   73  73 VAL C  132  VAL C  136  5                                   5    
HELIX   74  74 SER C  145  PHE C  153  1                                   9    
HELIX   75  75 ALA C  170  GLN C  185  1                                  16    
HELIX   76  76 LYS C  188  LEU C  192  5                                   5    
HELIX   77  77 ILE C  200  VAL C  206  1                                   7    
HELIX   78  78 PRO C  213  MET C  232  1                                  20    
HELIX   79  79 GLY C  242  GLY C  249  1                                   8    
HELIX   80  80 THR C  251  VAL C  273  1                                  23    
HELIX   81  81 ASN C  276  PHE C  280  5                                   5    
HELIX   82  82 PHE C  280  PRO C  282  5                                   3    
HELIX   83  83 ASN C  293  GLN C  314  1                                  22    
HELIX   84  84 ASN C  319  SER C  324  5                                   6    
HELIX   85  85 TYR C  342  HIS C  359  1                                  18    
HELIX   86  86 THR C  376  GLU C  393  1                                  18    
HELIX   87  87 SER C  406  VAL C  430  1                                  25    
HELIX   88  88 GLY C  432  LYS C  439  1                                   8    
HELIX   89  89 GLY C  440  GLY C  460  1                                  21    
HELIX   90  90 ASP C  484  ARG C  503  1                                  20    
HELIX   91  91 ASP C  504  ASN C  521  1                                  18    
HELIX   92  92 ASP C  526  ARG C  529  5                                   4    
HELIX   93  93 ASN C  530  ALA C  541  1                                  12    
HELIX   94  94 THR C  544  GLY C  557  1                                  14    
HELIX   95  95 VAL C  569  VAL C  574  1                                   6    
HELIX   96  96 THR C  577  GLY C  595  1                                  19    
HELIX   97  97 ASP C  611  LEU C  624  1                                  14    
HELIX   98  98 THR C  636  ALA C  647  1                                  12    
HELIX   99  99 GLY C  660  LEU C  675  1                                  16    
HELIX  100 100 PRO C  689  GLN C  691  5                                   3    
HELIX  101 101 ASP C  692  ASP C  699  1                                   8    
HELIX  102 102 VAL C  710  ASP C  727  1                                  18    
HELIX  103 103 LEU D   23  PHE D   27  5                                   5    
HELIX  104 104 THR D   31  ARG D   45  1                                  15    
HELIX  105 105 THR D   54  LEU D   62  1                                   9    
HELIX  106 106 ASP D  117  ARG D  131  1                                  15    
HELIX  107 107 ALA D  146  GLU D  148  5                                   3    
HELIX  108 108 HIS D  149  LEU D  154  1                                   6    
HELIX  109 109 ASP D  171  ARG D  185  1                                  15    
HELIX  110 110 PRO D  189  LEU D  193  5                                   5    
HELIX  111 111 ASP D  200  GLY D  209  1                                  10    
HELIX  112 112 VAL D  216  LEU D  224  1                                   9    
HELIX  113 113 ALA D  238  ASN D  243  1                                   6    
HELIX  114 114 GLY D  247  GLN D  269  1                                  23    
HELIX  115 115 THR D  272  ASP D  278  1                                   7    
HELIX  116 116 ASP D  289  PHE D  311  1                                  23    
HELIX  117 117 ASP D  314  ARG D  318  5                                   5    
HELIX  118 118 PRO D  336  GLY D  354  1                                  19    
HELIX  119 119 ASP D  373  GLU D  389  1                                  17    
HELIX  120 120 ASN D  391  VAL D  395  5                                   5    
HELIX  121 121 SER D  402  LEU D  426  1                                  25    
HELIX  122 122 GLY D  428  THR D  435  1                                   8    
HELIX  123 123 GLU D  436  ASN D  455  1                                  20    
HELIX  124 124 SER D  494  VAL D  507  1                                  14    
HELIX  125 125 THR D  520  ALA D  538  1                                  19    
HELIX  126 126 THR D  549  GLY D  561  1                                  13    
HELIX  127 127 SER D  570  GLY D  578  1                                   9    
HELIX  128 128 GLN D  577  GLY D  589  1                                  13    
HELIX  129 129 ALA D  598  ASP D  604  5                                   7    
HELIX  130 130 ASP D  605  ILE D  613  1                                   9    
HELIX  131 131 ASP D  622  LEU D  634  1                                  13    
SHEET    1   A 3 LEU A 113  VAL A 115  0                                        
SHEET    2   A 3 SER A 162  MET A 165  1  N  SER A 164   O  LEU A 113           
SHEET    3   A 3 ALA A 193  ILE A 196  1  N  ALA A 193   O  VAL A 163           
SHEET    1   B 4 ILE A 238  SER A 241  0                                        
SHEET    2   B 4 LEU A 284  ILE A 290  1  N  SER A 285   O  ILE A 238           
SHEET    3   B 4 THR A 327  THR A 331  1  N  HIS A 328   O  PHE A 286           
SHEET    4   B 4 SER A 362  HIS A 364  1  N  SER A 362   O  SER A 329           
SHEET    1   C 5 ASP A 627  VAL A 630  0                                        
SHEET    2   C 5 ARG A 599  ALA A 603  1  N  ILE A 600   O  ASP A 627           
SHEET    3   C 5 VAL A 651  SER A 656  1  N  VAL A 651   O  LEU A 601           
SHEET    4   C 5 LEU A 681  GLY A 686  1  N  LEU A 681   O  VAL A 652           
SHEET    5   C 5 ALA A 701  TYR A 705  1  N  VAL A 702   O  ILE A 682           
SHEET    1   D 3 ARG B 110  HIS B 113  0                                        
SHEET    2   D 3 SER B 135  ARG B 139  1  N  SER B 135   O  ALA B 111           
SHEET    3   D 3 LYS B 163  PHE B 167  1  N  LYS B 163   O  LEU B 136           
SHEET    1   E 4 VAL B 234  ASP B 237  0                                        
SHEET    2   E 4 ILE B 280  ALA B 286  1  N  ASN B 281   O  VAL B 234           
SHEET    3   E 4 GLN B 322  THR B 326  1  N  ASN B 323   O  PHE B 282           
SHEET    4   E 4 SER B 357  THR B 359  1  N  SER B 357   O  ALA B 324           
SHEET    1   F 5 GLN B 544  GLU B 546  0                                        
SHEET    2   F 5 PHE B 514  CYS B 517  1  N  LEU B 515   O  VAL B 545           
SHEET    3   F 5 VAL B 564  CYS B 568  1  N  ASP B 566   O  PHE B 514           
SHEET    4   F 5 ALA B 592  SER B 596  1  N  ALA B 592   O  ALA B 565           
SHEET    5   F 5 GLY B 615  LEU B 617  1  N  GLY B 615   O  LEU B 595           
SHEET    1   G 3 LEU C 113  ALA C 116  0                                        
SHEET    2   G 3 SER C 162  THR C 166  1  N  SER C 164   O  LEU C 113           
SHEET    3   G 3 ALA C 193  ILE C 196  1  N  ALA C 193   O  VAL C 163           
SHEET    1   H 4 ILE C 238  SER C 241  0                                        
SHEET    2   H 4 LEU C 284  ILE C 290  1  N  SER C 285   O  ILE C 238           
SHEET    3   H 4 THR C 327  THR C 331  1  N  HIS C 328   O  PHE C 286           
SHEET    4   H 4 SER C 362  HIS C 364  1  N  SER C 362   O  SER C 329           
SHEET    1   I 5 ASP C 627  VAL C 630  0                                        
SHEET    2   I 5 ARG C 599  ALA C 603  1  N  ILE C 600   O  ASP C 627           
SHEET    3   I 5 VAL C 651  SER C 656  1  N  VAL C 651   O  LEU C 601           
SHEET    4   I 5 LEU C 681  GLY C 686  1  N  LEU C 681   O  VAL C 652           
SHEET    5   I 5 ALA C 701  TYR C 705  1  N  VAL C 702   O  ILE C 682           
SHEET    1   J 3 ARG D 110  HIS D 113  0                                        
SHEET    2   J 3 SER D 135  ARG D 139  1  N  SER D 135   O  ALA D 111           
SHEET    3   J 3 LYS D 163  PHE D 167  1  N  LYS D 163   O  LEU D 136           
SHEET    1   K 4 VAL D 234  ASP D 237  0                                        
SHEET    2   K 4 ILE D 280  ALA D 286  1  N  ASN D 281   O  VAL D 234           
SHEET    3   K 4 GLN D 322  THR D 326  1  N  ASN D 323   O  PHE D 282           
SHEET    4   K 4 SER D 357  THR D 359  1  N  SER D 357   O  ALA D 324           
SHEET    1   L 5 GLN D 544  GLU D 546  0                                        
SHEET    2   L 5 PHE D 514  CYS D 517  1  N  LEU D 515   O  VAL D 545           
SHEET    3   L 5 VAL D 564  CYS D 568  1  N  ASP D 566   O  PHE D 514           
SHEET    4   L 5 ALA D 592  SER D 596  1  N  ALA D 592   O  ALA D 565           
SHEET    5   L 5 GLY D 615  LEU D 617  1  N  GLY D 615   O  LEU D 595           
LINK         NE2 HIS A 610                CO   B12 A 800     1555   1555  2.32  
LINK         NE2 HIS C 610                CO   B12 C 800     1555   1555  2.29  
LINK        CO   B12 C 800                 O   HOH C2475     1555   1555  2.74  
CISPEP   1 PRO A   68    PRO A   69          0         1.75                     
CISPEP   2 ALA B   91    PRO B   92          0         3.30                     
CISPEP   3 PRO C   68    PRO C   69          0         4.65                     
CISPEP   4 ALA D   91    PRO D   92          0         5.39                     
SITE     1 AC1 42 TYR A  89  PHE A 117  LEU A 119  HIS A 122                    
SITE     2 AC1 42 ALA A 139  VAL A 206  ARG A 207  GLU A 247                    
SITE     3 AC1 42 GLY A 333  TRP A 334  LEU A 336  GLU A 370                    
SITE     4 AC1 42 ALA A 371  ALA A 373  LEU A 374  GLN A 454                    
SITE     5 AC1 42 LEU A 602  GLY A 609  HIS A 610  ASP A 611                    
SITE     6 AC1 42 ARG A 612  GLY A 613  ILE A 617  TYR A 621                    
SITE     7 AC1 42 SER A 655  LEU A 657  GLY A 659  GLY A 685                    
SITE     8 AC1 42 GLY A 686  VAL A 687  TYR A 705  THR A 706                    
SITE     9 AC1 42 THR A 709  SER A 714  HOH A2245  HOH A2437                    
SITE    10 AC1 42 HOH A2438  HOH A2439  HOH A2440  HOH A2441                    
SITE    11 AC1 42 HOH A2442  HOH A2443                                          
SITE     1 AC2 35 TYR A  75  THR A  77  MET A  78  PHE A  81                    
SITE     2 AC2 35 ARG A  82  THR A  85  ARG A  87  SER A 114                    
SITE     3 AC2 35 SER A 164  THR A 166  THR A 195  ASN A 236                    
SITE     4 AC2 35 ARG A 283  SER A 285  ARG A 326  THR A 327                    
SITE     5 AC2 35 HIS A 328  GLN A 361  SER A 362  HOH A2112                    
SITE     6 AC2 35 HOH A2216  HOH A2217  HOH A2241  HOH A2444                    
SITE     7 AC2 35 HOH A2445  HOH A2446  HOH A2447  HOH A2448                    
SITE     8 AC2 35 HOH A2449  HOH A2450  HOH A2451  HOH A2452                    
SITE     9 AC2 35 HOH A2453  VAL B  42  ARG B  45                               
SITE     1 AC3 40 TYR C  89  PHE C 117  LEU C 119  HIS C 122                    
SITE     2 AC3 40 ALA C 139  VAL C 206  ARG C 207  GLU C 247                    
SITE     3 AC3 40 GLY C 333  TRP C 334  GLU C 370  ALA C 371                    
SITE     4 AC3 40 ALA C 373  LEU C 374  LEU C 602  GLY C 609                    
SITE     5 AC3 40 HIS C 610  ASP C 611  ARG C 612  GLY C 613                    
SITE     6 AC3 40 TYR C 621  SER C 655  LEU C 657  GLY C 659                    
SITE     7 AC3 40 GLY C 685  GLY C 686  VAL C 687  TYR C 705                    
SITE     8 AC3 40 THR C 706  THR C 709  HOH C2109  HOH C2127                    
SITE     9 AC3 40 HOH C2162  HOH C2249  HOH C2458  HOH C2472                    
SITE    10 AC3 40 HOH C2473  HOH C2475  HOH C2476  HOH C2477                    
SITE     1 AC4 37 TYR C  75  THR C  77  MET C  78  PHE C  81                    
SITE     2 AC4 37 ARG C  82  THR C  85  ARG C  87  TYR C  89                    
SITE     3 AC4 37 SER C 114  SER C 164  THR C 166  THR C 195                    
SITE     4 AC4 37 ASN C 236  ARG C 283  SER C 285  ARG C 326                    
SITE     5 AC4 37 THR C 327  HIS C 328  GLN C 361  SER C 362                    
SITE     6 AC4 37 HOH C2068  HOH C2075  HOH C2076  HOH C2108                    
SITE     7 AC4 37 HOH C2221  HOH C2222  HOH C2479  HOH C2480                    
SITE     8 AC4 37 HOH C2482  HOH C2484  HOH C2485  HOH C2486                    
SITE     9 AC4 37 HOH C2487  HOH C2488  HOH C2489  HOH C2490                    
SITE    10 AC4 37 ARG D  45                                                     
CRYST1  125.398  161.829  166.949  90.00  90.00  90.00 P 21 21 21    8          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.007975  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.006179  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.005990        0.00000                         
MTRIX1   1  0.999851  0.003240 -0.016960       62.02600    1                    
MTRIX2   1 -0.003149  0.999980  0.005405        0.19600    1                    
MTRIX3   1  0.016977 -0.005351  0.999842      -62.99100    1