HEADER    METHYLTRANSFERASE                       01-MAY-98   1CBF              
TITLE     THE X-RAY STRUCTURE OF A COBALAMIN BIOSYNTHETIC ENZYME, COBALT        
TITLE    2 PRECORRIN-4 METHYLTRANSFERASE, CBIF                                  
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: COBALT-PRECORRIN-4 TRANSMETHYLASE;                         
COMPND   3 CHAIN: A;                                                            
COMPND   4 SYNONYM: PRECORRIN-4 METHYLASE, CBIF;                                
COMPND   5 EC: 2.1.1.133;                                                       
COMPND   6 ENGINEERED: YES;                                                     
COMPND   7 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: BACILLUS MEGATERIUM;                            
SOURCE   3 ORGANISM_TAXID: 1404;                                                
SOURCE   4 CELL_LINE: BL21;                                                     
SOURCE   5 ATCC: DSM 509;                                                       
SOURCE   6 COLLECTION: DSM 509;                                                 
SOURCE   7 GENE: CBIF;                                                          
SOURCE   8 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   9 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE  10 EXPRESSION_SYSTEM_STRAIN: BL21 (DE3) LYSS;                           
SOURCE  11 EXPRESSION_SYSTEM_PLASMID: PET14B                                    
KEYWDS    PRECORRIN-4 METHYLTRANSFERASE, METHYLASE, COBALAMIN BIOSYNTHESIS,     
KEYWDS   2 METHYLTRANSFERASE                                                    
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    H.L.SCHUBERT,E.RAUX,S.C.WOODCOCK,K.S.WILSON,M.J.WARREN                
REVDAT   4   07-FEB-24 1CBF    1       REMARK SEQADV ATOM                       
REVDAT   3   13-JUL-11 1CBF    1       VERSN                                    
REVDAT   2   24-FEB-09 1CBF    1       VERSN                                    
REVDAT   1   11-MAY-99 1CBF    0                                                
JRNL        AUTH   H.L.SCHUBERT,K.S.WILSON,E.RAUX,S.C.WOODCOCK,M.J.WARREN       
JRNL        TITL   THE X-RAY STRUCTURE OF A COBALAMIN BIOSYNTHETIC ENZYME,      
JRNL        TITL 2 COBALT-PRECORRIN-4 METHYLTRANSFERASE.                        
JRNL        REF    NAT.STRUCT.BIOL.              V.   5   585 1998              
JRNL        REFN                   ISSN 1072-8368                               
JRNL        PMID   9665173                                                      
JRNL        DOI    10.1038/846                                                  
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   E.RAUX,H.L.SCHUBERT,S.C.WOODCOCK,K.S.WILSON,M.J.WARREN       
REMARK   1  TITL   COBALAMIN (VITAMIN B12) BIOSYNTHESIS--CLONING, EXPRESSION    
REMARK   1  TITL 2 AND CRYSTALLISATION OF THE BACILLUS MEGATERIUM               
REMARK   1  TITL 3 S-ADENOSYL-L-METHIONINE-DEPENDENT COBALT-PRECORRIN-4         
REMARK   1  TITL 4 TRANSMETHYLASE CBIF                                          
REMARK   1  REF    EUR.J.BIOCHEM.                V. 254   341 1998              
REMARK   1  REFN                   ISSN 0014-2956                               
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.40 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) : 2.40                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 20.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   COMPLETENESS FOR RANGE        (%) : 100.0                          
REMARK   3   NUMBER OF REFLECTIONS             : 16587                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : NULL                            
REMARK   3   FREE R VALUE TEST SET SELECTION  : RANDOM                          
REMARK   3   R VALUE     (WORKING + TEST SET) : NULL                            
REMARK   3   R VALUE            (WORKING SET) : 0.195                           
REMARK   3   FREE R VALUE                     : 0.247                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 814                             
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 1818                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 36                                      
REMARK   3   SOLVENT ATOMS            : 135                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : NULL                           
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : NULL                                                 
REMARK   3    B22 (A**2) : NULL                                                 
REMARK   3    B33 (A**2) : NULL                                                 
REMARK   3    B12 (A**2) : NULL                                                 
REMARK   3    B13 (A**2) : NULL                                                 
REMARK   3    B23 (A**2) : NULL                                                 
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) : NULL  ; NULL                
REMARK   3    ANGLE DISTANCE                  (A) : NULL  ; NULL                
REMARK   3    INTRAPLANAR 1-4 DISTANCE        (A) : NULL  ; NULL                
REMARK   3    H-BOND OR METAL COORDINATION    (A) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3   PLANE RESTRAINT                  (A) : NULL  ; NULL                
REMARK   3   CHIRAL-CENTER RESTRAINT       (A**3) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3   NON-BONDED CONTACT RESTRAINTS.                                     
REMARK   3    SINGLE TORSION                  (A) : NULL  ; NULL                
REMARK   3    MULTIPLE TORSION                (A) : NULL  ; NULL                
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) : NULL  ; NULL                 
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: FREE R VALUE TEST SET SELECTION WAS       
REMARK   3  RANDOM, BUT FRIEDEL MATES ARE KEPT IN SAME SET.                     
REMARK   4                                                                      
REMARK   4 1CBF COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL.                                
REMARK 100 THE DEPOSITION ID IS D_1000172205.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : MAR-97                             
REMARK 200  TEMPERATURE           (KELVIN) : 120                                
REMARK 200  PH                             : 7.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : SRS                                
REMARK 200  BEAMLINE                       : PX9.5                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.91                               
REMARK 200  MONOCHROMATOR                  : SI(111)                            
REMARK 200  OPTICS                         : PLATINUM COATED TORROIDAL MIRROR   
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : MARRESEARCH                        
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 16587                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.400                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 20.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 100.0                              
REMARK 200  DATA REDUNDANCY                : 5.000                              
REMARK 200  R MERGE                    (I) : 0.03900                            
REMARK 200  R SYM                      (I) : 0.04000                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 21.3000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.40                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.44                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 100.0                              
REMARK 200  DATA REDUNDANCY IN SHELL       : 5.00                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.12200                            
REMARK 200  R SYM FOR SHELL            (I) : 0.11500                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 10.00                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: NULL                                           
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MULTIPLE ISOMORPHOUS         
REMARK 200  REPLACEMENT                                                         
REMARK 200 SOFTWARE USED: MLPHARE                                               
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 63.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.32                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PH 7.5                                   
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 31 2 1                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -Y,X-Y,Z+1/3                                            
REMARK 290       3555   -X+Y,-X,Z+2/3                                           
REMARK 290       4555   Y,X,-Z                                                  
REMARK 290       5555   X-Y,-Y,-Z+2/3                                           
REMARK 290       6555   -X,-X+Y,-Z+1/3                                          
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 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       36.46667            
REMARK 290   SMTRY1   3 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   3 -0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000       72.93333            
REMARK 290   SMTRY1   4 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   4  0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   5  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   5  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   5  0.000000  0.000000 -1.000000       72.93333            
REMARK 290   SMTRY1   6 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   6 -0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   6  0.000000  0.000000 -1.000000       36.46667            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
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 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 AUTHOR DETERMINED BIOLOGICAL UNIT: DIMERIC                           
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PISA,PQS                                              
REMARK 350 TOTAL BURIED SURFACE AREA: 5240 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 19950 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -57.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A                                     
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   BIOMT1   2 -0.500000 -0.866025  0.000000        0.00000            
REMARK 350   BIOMT2   2 -0.866025  0.500000  0.000000        0.00000            
REMARK 350   BIOMT3   2  0.000000  0.000000 -1.000000      145.86667            
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     MET A     1                                                      
REMARK 465     GLY A     2                                                      
REMARK 465     SER A     3                                                      
REMARK 465     SER A     4                                                      
REMARK 465     HIS A     5                                                      
REMARK 465     HIS A     6                                                      
REMARK 465     HIS A     7                                                      
REMARK 465     HIS A     8                                                      
REMARK 465     HIS A     9                                                      
REMARK 465     HIS A    10                                                      
REMARK 465     SER A    11                                                      
REMARK 465     SER A    12                                                      
REMARK 465     ALA A   252                                                      
REMARK 465     THR A   253                                                      
REMARK 465     PRO A   254                                                      
REMARK 465     TRP A   255                                                      
REMARK 465     LEU A   256                                                      
REMARK 465     SER A   257                                                      
REMARK 465     GLY A   258                                                      
REMARK 465     LEU A   259                                                      
REMARK 465     GLY A   260                                                      
REMARK 465     GLU A   261                                                      
REMARK 465     ASN A   262                                                      
REMARK 465     PRO A   263                                                      
REMARK 465     ALA A   264                                                      
REMARK 465     ILE A   265                                                      
REMARK 465     ARG A   266                                                      
REMARK 465     ALA A   267                                                      
REMARK 465     MET A   268                                                      
REMARK 465     PHE A   269                                                      
REMARK 465     VAL A   270                                                      
REMARK 465     ALA A   271                                                      
REMARK 465     HIS A   272                                                      
REMARK 465     LEU A   273                                                      
REMARK 465     HIS A   274                                                      
REMARK 465     GLN A   275                                                      
REMARK 465     ALA A   276                                                      
REMARK 465     LEU A   277                                                      
REMARK 465     ASN A   278                                                      
REMARK 465     MET A   279                                                      
REMARK 465     ALA A   280                                                      
REMARK 465     VAL A   281                                                      
REMARK 465     GLU A   282                                                      
REMARK 465     GLU A   283                                                      
REMARK 465     ALA A   284                                                      
REMARK 465     ALA A   285                                                      
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS                                             
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC             
REMARK 500 SYMMETRY ARE IN CLOSE CONTACT.  AN ATOM LOCATED WITHIN 0.15          
REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A           
REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375             
REMARK 500 INSTEAD OF REMARK 500.  ATOMS WITH NON-BLANK ALTERNATE               
REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS.            
REMARK 500                                                                      
REMARK 500 DISTANCE CUTOFF:                                                     
REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS              
REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS                  
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI  SSYMOP   DISTANCE          
REMARK 500   O    HOH A   508     O    HOH A   508     6556     0.36            
REMARK 500   CD1  LEU A    14     O    HOH A   562     2565     1.57            
REMARK 500   CG   LEU A    14     O    HOH A   562     2565     1.69            
REMARK 500   O    HOH A   619     O    HOH A   624     6556     1.80            
REMARK 500   CD2  LEU A    14     O    HOH A   562     2565     2.02            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
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    ASP A 123   CA    ASP A 123   CB      1.691                       
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    ASP A  34   CB  -  CG  -  OD1 ANGL. DEV. =   6.6 DEGREES          
REMARK 500    ASP A  60   CB  -  CG  -  OD2 ANGL. DEV. =   7.9 DEGREES          
REMARK 500    GLU A  70   OE1 -  CD  -  OE2 ANGL. DEV. =  -7.2 DEGREES          
REMARK 500    VAL A  97   N   -  CA  -  CB  ANGL. DEV. = -13.9 DEGREES          
REMARK 500    ARG A  98   NE  -  CZ  -  NH1 ANGL. DEV. =   5.0 DEGREES          
REMARK 500    ARG A 119   NE  -  CZ  -  NH1 ANGL. DEV. =  -3.1 DEGREES          
REMARK 500    ASP A 123   CA  -  CB  -  CG  ANGL. DEV. = -34.2 DEGREES          
REMARK 500    ASP A 123   CB  -  CG  -  OD2 ANGL. DEV. =   7.9 DEGREES          
REMARK 500    VAL A 133   CB  -  CA  -  C   ANGL. DEV. = -15.6 DEGREES          
REMARK 500    VAL A 133   CA  -  CB  -  CG2 ANGL. DEV. =  10.5 DEGREES          
REMARK 500    ARG A 157   NE  -  CZ  -  NH1 ANGL. DEV. =   5.0 DEGREES          
REMARK 500    ARG A 157   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.2 DEGREES          
REMARK 500    GLU A 159   CG  -  CD  -  OE2 ANGL. DEV. =  12.3 DEGREES          
REMARK 500    ARG A 161   NE  -  CZ  -  NH1 ANGL. DEV. =   5.3 DEGREES          
REMARK 500    ARG A 161   NE  -  CZ  -  NH2 ANGL. DEV. =  -7.2 DEGREES          
REMARK 500    ASP A 217   CB  -  CG  -  OD2 ANGL. DEV. =   6.0 DEGREES          
REMARK 500    ARG A 222   NE  -  CZ  -  NH1 ANGL. DEV. =  -3.0 DEGREES          
REMARK 500    ARG A 233   CG  -  CD  -  NE  ANGL. DEV. =  13.7 DEGREES          
REMARK 500    ARG A 233   CD  -  NE  -  CZ  ANGL. DEV. =  29.2 DEGREES          
REMARK 500    LEU A 249   CB  -  CG  -  CD1 ANGL. DEV. = -11.1 DEGREES          
REMARK 500    PRO A 251   C   -  N   -  CD  ANGL. DEV. =  13.1 DEGREES          
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    SER A  55       68.52     30.93                                   
REMARK 500    LEU A  56      -35.35   -171.62                                   
REMARK 500    ASP A 148       -1.86     78.69                                   
REMARK 500    PRO A 165      151.74    -48.81                                   
REMARK 500    CYS A 178     -165.35   -103.44                                   
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    ILE A  25         16.39                                           
REMARK 500    ILE A  62        -10.27                                           
REMARK 500    ARG A  98         10.69                                           
REMARK 500    GLY A 160        -10.40                                           
REMARK 500    THR A 162         11.17                                           
REMARK 500    ASP A 229        -10.01                                           
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: SAH                                                 
REMARK 800 EVIDENCE_CODE: UNKNOWN                                               
REMARK 800 SITE_DESCRIPTION: S-ADENOSYL-HOMOCYSTEINE BINDING SITE. CRYSTALS     
REMARK 800  FORMED IN THE PRESENCE OF ADOMET OR ADOHCY.                         
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: P-4                                                 
REMARK 800 EVIDENCE_CODE: UNKNOWN                                               
REMARK 800 SITE_DESCRIPTION: PRECORRIN-4 BINDING SITE IN DEEP TROUGH. ALSO,     
REMARK 800  LOCATION OF BOUND PHOSPHATE RESIDUE 401. PHOSPHATE PRESENT FROM     
REMARK 800  CRYSTALLIZATION CONDITIONS.                                         
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: PAL                                                 
REMARK 800 EVIDENCE_CODE: UNKNOWN                                               
REMARK 800 SITE_DESCRIPTION: PHOSPHATE ION INVOLVED IN CRYSTAL CONTACT.         
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE PO4 A 400                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE PO4 A 401                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SAH A 300                 
DBREF  1CBF A   21   259  UNP    O87696   CBIF_BACME       1    242             
SEQADV 1CBF SER A  186  UNP  O87696    ALA   166 CONFLICT                       
SEQADV 1CBF     A       UNP  O87696    HIS   232 DELETION                       
SEQADV 1CBF     A       UNP  O87696    ILE   233 DELETION                       
SEQADV 1CBF     A       UNP  O87696    HIS   234 DELETION                       
SEQADV 1CBF ALA A  252  UNP  O87696    ASP   235 CONFLICT                       
SEQADV 1CBF THR A  253  UNP  O87696    LYS   236 CONFLICT                       
SEQADV 1CBF PRO A  254  UNP  O87696    ASP   237 CONFLICT                       
SEQADV 1CBF TRP A  255  UNP  O87696    TYR   238 CONFLICT                       
SEQADV 1CBF LEU A  256  UNP  O87696    ARG   239 CONFLICT                       
SEQADV 1CBF GLY A  258  UNP  O87696    LYS   241 CONFLICT                       
SEQRES   1 A  285  MET GLY SER SER HIS HIS HIS HIS HIS HIS SER SER GLY          
SEQRES   2 A  285  LEU VAL PRO ARG GLY SER HIS MET LYS LEU TYR ILE ILE          
SEQRES   3 A  285  GLY ALA GLY PRO GLY ASP PRO ASP LEU ILE THR VAL LYS          
SEQRES   4 A  285  GLY LEU LYS LEU LEU GLN GLN ALA ASP VAL VAL LEU TYR          
SEQRES   5 A  285  ALA ASP SER LEU VAL SER GLN ASP LEU ILE ALA LYS SER          
SEQRES   6 A  285  LYS PRO GLY ALA GLU VAL LEU LYS THR ALA GLY MET HIS          
SEQRES   7 A  285  LEU GLU GLU MET VAL GLY THR MET LEU ASP ARG MET ARG          
SEQRES   8 A  285  GLU GLY LYS MET VAL VAL ARG VAL HIS THR GLY ASP PRO          
SEQRES   9 A  285  ALA MET TYR GLY ALA ILE MET GLU GLN MET VAL LEU LEU          
SEQRES  10 A  285  LYS ARG GLU GLY VAL ASP ILE GLU ILE VAL PRO GLY VAL          
SEQRES  11 A  285  THR SER VAL PHE ALA ALA ALA ALA ALA ALA GLU ALA GLU          
SEQRES  12 A  285  LEU THR ILE PRO ASP LEU THR GLN THR VAL ILE LEU THR          
SEQRES  13 A  285  ARG ALA GLU GLY ARG THR PRO VAL PRO GLU PHE GLU LYS          
SEQRES  14 A  285  LEU THR ASP LEU ALA LYS HIS LYS CYS THR ILE ALA LEU          
SEQRES  15 A  285  PHE LEU SER SER THR LEU THR LYS LYS VAL MET LYS GLU          
SEQRES  16 A  285  PHE ILE ASN ALA GLY TRP SER GLU ASP THR PRO VAL VAL          
SEQRES  17 A  285  VAL VAL TYR LYS ALA THR TRP PRO ASP GLU LYS ILE VAL          
SEQRES  18 A  285  ARG THR THR VAL LYS ASP LEU ASP ASP ALA MET ARG THR          
SEQRES  19 A  285  ASN GLY ILE ARG LYS GLN ALA MET ILE LEU ALA GLY TRP          
SEQRES  20 A  285  ALA LEU ASP PRO ALA THR PRO TRP LEU SER GLY LEU GLY          
SEQRES  21 A  285  GLU ASN PRO ALA ILE ARG ALA MET PHE VAL ALA HIS LEU          
SEQRES  22 A  285  HIS GLN ALA LEU ASN MET ALA VAL GLU GLU ALA ALA              
HET    PO4  A 400       5                                                       
HET    PO4  A 401       5                                                       
HET    SAH  A 300      26                                                       
HETNAM     PO4 PHOSPHATE ION                                                    
HETNAM     SAH S-ADENOSYL-L-HOMOCYSTEINE                                        
FORMUL   2  PO4    2(O4 P 3-)                                                   
FORMUL   4  SAH    C14 H20 N6 O5 S                                              
FORMUL   5  HOH   *135(H2 O)                                                    
HELIX    1   1 PRO A   33  LEU A   35  5                                   3    
HELIX    2   2 VAL A   38  GLN A   46  1                                   9    
HELIX    3   3 GLN A   59  LYS A   64  1                                   6    
HELIX    4   4 LEU A   79  GLU A   92  1                                  14    
HELIX    5   5 MET A  111  GLU A  120  1                                  10    
HELIX    6   6 SER A  132  ALA A  139  1                                   8    
HELIX    7   7 GLU A  166  GLU A  168  5                                   3    
HELIX    8   8 LEU A  170  HIS A  176  1                                   7    
HELIX    9   9 THR A  189  ASN A  198  1                                  10    
HELIX   10  10 VAL A  225  THR A  234  5                                  10    
HELIX   11  11 TRP A  247  LEU A  249  5                                   3    
SHEET    1   A 5 ASP A 123  VAL A 127  0                                        
SHEET    2   A 5 LYS A  22  GLY A  27  1  N  LEU A  23   O  ASP A 123           
SHEET    3   A 5 VAL A  96  HIS A 100  1  N  VAL A  96   O  TYR A  24           
SHEET    4   A 5 VAL A  49  TYR A  52  1  N  VAL A  49   O  VAL A  97           
SHEET    5   A 5 GLU A  70  LYS A  73  1  N  GLU A  70   O  VAL A  50           
SHEET    1   B 5 VAL A 153  ARG A 157  0                                        
SHEET    2   B 5 THR A 179  PHE A 183  1  N  THR A 179   O  ILE A 154           
SHEET    3   B 5 ALA A 241  ALA A 245 -1  N  ALA A 245   O  ILE A 180           
SHEET    4   B 5 PRO A 206  TYR A 211 -1  N  VAL A 210   O  MET A 242           
SHEET    5   B 5 LYS A 219  THR A 224 -1  N  THR A 223   O  VAL A 207           
SITE     1 SAH  1 SAH A 300                                                     
SITE     1 P-4  7 PO4 A 401  ALA A  53  SER A  55  LEU A  79                    
SITE     2 P-4  7 ARG A  98  GLU A 112  GLN A 113                               
SITE     1 PAL  1 PO4 A 400                                                     
SITE     1 AC1 11 PRO A  16  ARG A  17  GLY A  18  SER A  19                    
SITE     2 AC1 11 HIS A  20  GLY A 160  ARG A 161  THR A 162                    
SITE     3 AC1 11 HOH A 574  HOH A 576  HOH A 577                               
SITE     1 AC2  5 HIS A 100  THR A 101  GLY A 108  HOH A 504                    
SITE     2 AC2  5 HOH A 613                                                     
SITE     1 AC3 18 PRO A  30  THR A 101  GLY A 102  ASP A 103                    
SITE     2 AC3 18 MET A 106  THR A 131  SER A 132  PHE A 183                    
SITE     3 AC3 18 LEU A 184  VAL A 210  LYS A 212  ALA A 213                    
SITE     4 AC3 18 GLN A 240  ALA A 241  MET A 242  HOH A 504                    
SITE     5 AC3 18 HOH A 509  HOH A 519                                          
CRYST1   80.700   80.700  109.400  90.00  90.00 120.00 P 31 2 1      6          
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      0.012392  0.007154  0.000000        0.00000                         
SCALE2      0.000000  0.014309  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.009141        0.00000