HEADER    LYASE                                   22-DEC-98   1B4K              
TITLE     HIGH RESOLUTION CRYSTAL STRUCTURE OF A MG2-DEPENDENT 5-AMINOLEVULINIC 
TITLE    2 ACID DEHYDRATASE                                                     
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: PROTEIN (5-AMINOLEVULINIC ACID DEHYDRATASE);               
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 SYNONYM: PORPHOBILINOGEN SYNTHASE;                                   
COMPND   5 EC: 4.2.1.24;                                                        
COMPND   6 ENGINEERED: YES;                                                     
COMPND   7 OTHER_DETAILS: SCHIFF BASE LINK BETWEEN ATOM NZ OF LYS260 AND ATOM C4
COMPND   8 OF LEVULINIC ACID                                                    
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: PSEUDOMONAS AERUGINOSA;                         
SOURCE   3 ORGANISM_TAXID: 208964;                                              
SOURCE   4 STRAIN: PAO1;                                                        
SOURCE   5 ATCC: ATCC 15692;                                                    
SOURCE   6 COLLECTION: ATCC 15692;                                              
SOURCE   7 CELLULAR_LOCATION: CYTOPLASM;                                        
SOURCE   8 GENE: HEMB;                                                          
SOURCE   9 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3);                       
SOURCE  10 EXPRESSION_SYSTEM_TAXID: 469008;                                     
SOURCE  11 EXPRESSION_SYSTEM_STRAIN: BL21-DE3;                                  
SOURCE  12 EXPRESSION_SYSTEM_CELLULAR_LOCATION: CYTOPLASM;                      
SOURCE  13 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  14 EXPRESSION_SYSTEM_PLASMID: PGEX-6P-1;                                
SOURCE  15 EXPRESSION_SYSTEM_GENE: HEMB                                         
KEYWDS    LYASE, HEME BIOSYNTHESIS, MAGNESIUM, LEVULINIC ACID                   
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    N.FRANKENBERG,D.JAHN,D.W.HEINZ                                        
REVDAT   7   30-OCT-24 1B4K    1       REMARK                                   
REVDAT   6   09-AUG-23 1B4K    1       REMARK LINK                              
REVDAT   5   18-JAN-12 1B4K    1       HET    HETATM LINK                       
REVDAT   4   13-JUL-11 1B4K    1       VERSN                                    
REVDAT   3   24-FEB-09 1B4K    1       VERSN                                    
REVDAT   2   01-APR-03 1B4K    1       JRNL                                     
REVDAT   1   13-JUL-99 1B4K    0                                                
JRNL        AUTH   N.FRANKENBERG,P.T.ERSKINE,J.B.COOPER,P.M.SHOOLINGIN-JORDAN,  
JRNL        AUTH 2 D.JAHN,D.W.HEINZ                                             
JRNL        TITL   HIGH RESOLUTION CRYSTAL STRUCTURE OF A MG2+-DEPENDENT        
JRNL        TITL 2 PORPHOBILINOGEN SYNTHASE.                                    
JRNL        REF    J.MOL.BIOL.                   V. 289   591 1999              
JRNL        REFN                   ISSN 0022-2836                               
JRNL        PMID   10356331                                                     
JRNL        DOI    10.1006/JMBI.1999.2808                                       
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.67 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) : 1.67                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 51.30                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 98.2                           
REMARK   3   NUMBER OF REFLECTIONS             : 75401                          
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) : NULL                            
REMARK   3   R VALUE            (WORKING SET) : 0.178                           
REMARK   3   FREE R VALUE                     : 0.208                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 3988                            
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 5007                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 25                                      
REMARK   3   SOLVENT ATOMS            : 572                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 20.90                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 19.40                          
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): 0.140         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.180         
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) : 0.013 ; 0.020               
REMARK   3    ANGLE DISTANCE                  (A) : 0.033 ; 0.040               
REMARK   3    INTRAPLANAR 1-4 DISTANCE        (A) : 0.082 ; 0.050               
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) : 15.000; 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: NULL                                      
REMARK   4                                                                      
REMARK   4 1B4K COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 11-JAN-99.                  
REMARK 100 THE DEPOSITION ID IS D_1000000302.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 16-JUL-98                          
REMARK 200  TEMPERATURE           (KELVIN) : 80                                 
REMARK 200  PH                             : 8.0                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : EMBL/DESY, HAMBURG                 
REMARK 200  BEAMLINE                       : BW7B                               
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.8345                             
REMARK 200  MONOCHROMATOR                  : NULL                               
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          : CCP4 (SCALA)                       
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 81840                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.670                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 51.300                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 98.2                               
REMARK 200  DATA REDUNDANCY                : 8.800                              
REMARK 200  R MERGE                    (I) : 0.05600                            
REMARK 200  R SYM                      (I) : 0.05400                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 9.0000                             
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.67                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.76                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 94.1                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 4.80                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.30100                            
REMARK 200  R SYM FOR SHELL            (I) : 0.26900                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 2.800                              
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: 1AW5                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 50.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.46                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PH 8.0                                   
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 4 21 2                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,-Y,Z                                                 
REMARK 290       3555   -Y+1/2,X+1/2,Z                                          
REMARK 290       4555   Y+1/2,-X+1/2,Z                                          
REMARK 290       5555   -X+1/2,Y+1/2,-Z                                         
REMARK 290       6555   X+1/2,-Y+1/2,-Z                                         
REMARK 290       7555   Y,X,-Z                                                  
REMARK 290       8555   -Y,-X,-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        0.00000            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   3  0.000000 -1.000000  0.000000       64.12000            
REMARK 290   SMTRY2   3  1.000000  0.000000  0.000000       64.12000            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   4  0.000000  1.000000  0.000000       64.12000            
REMARK 290   SMTRY2   4 -1.000000  0.000000  0.000000       64.12000            
REMARK 290   SMTRY3   4  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   5 -1.000000  0.000000  0.000000       64.12000            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       64.12000            
REMARK 290   SMTRY3   5  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   6  1.000000  0.000000  0.000000       64.12000            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       64.12000            
REMARK 290   SMTRY3   6  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   7  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   7  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   7  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   8  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   8 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   8  0.000000  0.000000 -1.000000        0.00000            
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: OCTAMERIC                         
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: OCTAMERIC                  
REMARK 350 SOFTWARE USED: PISA,PQS                                              
REMARK 350 TOTAL BURIED SURFACE AREA: 47930 ANGSTROM**2                         
REMARK 350 SURFACE AREA OF THE COMPLEX: 77720 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -226.0 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   BIOMT1   2 -1.000000  0.000000  0.000000      256.48000            
REMARK 350   BIOMT2   2  0.000000 -1.000000  0.000000      128.24000            
REMARK 350   BIOMT3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   3  0.000000 -1.000000  0.000000      192.36000            
REMARK 350   BIOMT2   3  1.000000  0.000000  0.000000      -64.12000            
REMARK 350   BIOMT3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   4  0.000000  1.000000  0.000000       64.12000            
REMARK 350   BIOMT2   4 -1.000000  0.000000  0.000000      192.36000            
REMARK 350   BIOMT3   4  0.000000  0.000000  1.000000        0.00000            
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     SER A     2                                                      
REMARK 465     PHE A     3                                                      
REMARK 465     THR A     4                                                      
REMARK 465     PRO A     5                                                      
REMARK 465     ALA A     6                                                      
REMARK 465     ASN A     7                                                      
REMARK 465     ARG A     8                                                      
REMARK 465     ALA A     9                                                      
REMARK 465     GLY A   336                                                      
REMARK 465     ARG A   337                                                      
REMARK 465     MET B     1                                                      
REMARK 465     SER B     2                                                      
REMARK 465     PHE B     3                                                      
REMARK 465     THR B     4                                                      
REMARK 465     PRO B     5                                                      
REMARK 465     ALA B   221                                                      
REMARK 465     SER B   222                                                      
REMARK 465     ASN B   223                                                      
REMARK 465     LEU B   224                                                      
REMARK 465     GLY B   225                                                      
REMARK 465     LYS B   226                                                      
REMARK 465     GLY B   227                                                      
REMARK 465     ASN B   228                                                      
REMARK 465     LYS B   229                                                      
REMARK 465     ALA B   230                                                      
REMARK 465     GLY B   336                                                      
REMARK 465     ARG B   337                                                      
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT                     
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT.                            
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI           DISTANCE          
REMARK 500   NZ   LYS B   260     C3   SHF B   402              1.95            
REMARK 500   NZ   LYS A   260     C3   SHF A   403              1.98            
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    TYR A  10   CB  -  CG  -  CD2 ANGL. DEV. =   7.8 DEGREES          
REMARK 500    TYR A  10   CB  -  CG  -  CD1 ANGL. DEV. =  -8.9 DEGREES          
REMARK 500    ARG A  25   CD  -  NE  -  CZ  ANGL. DEV. =  15.7 DEGREES          
REMARK 500    ARG A  25   NE  -  CZ  -  NH1 ANGL. DEV. =   3.9 DEGREES          
REMARK 500    ARG A  25   NE  -  CZ  -  NH2 ANGL. DEV. =  -8.0 DEGREES          
REMARK 500    ARG A  51   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.9 DEGREES          
REMARK 500    ARG A 118   CD  -  NE  -  CZ  ANGL. DEV. =  13.5 DEGREES          
REMARK 500    ARG A 118   NE  -  CZ  -  NH1 ANGL. DEV. =   3.0 DEGREES          
REMARK 500    ASP A 131   CB  -  CG  -  OD2 ANGL. DEV. =   5.8 DEGREES          
REMARK 500    ASP A 139   CB  -  CG  -  OD1 ANGL. DEV. =   5.5 DEGREES          
REMARK 500    LEU A 157   CB  -  CG  -  CD1 ANGL. DEV. =  12.7 DEGREES          
REMARK 500    TYR A 202   CB  -  CG  -  CD2 ANGL. DEV. =  -3.9 DEGREES          
REMARK 500    TYR A 202   CB  -  CG  -  CD1 ANGL. DEV. =   4.0 DEGREES          
REMARK 500    ARG A 215   CD  -  NE  -  CZ  ANGL. DEV. =  12.3 DEGREES          
REMARK 500    MET A 263   CG  -  SD  -  CE  ANGL. DEV. = -11.0 DEGREES          
REMARK 500    ARG A 315   NE  -  CZ  -  NH2 ANGL. DEV. =  -4.4 DEGREES          
REMARK 500    ARG B  16   NE  -  CZ  -  NH1 ANGL. DEV. =   4.5 DEGREES          
REMARK 500    ARG B  19   NE  -  CZ  -  NH1 ANGL. DEV. =   6.4 DEGREES          
REMARK 500    ARG B  19   NE  -  CZ  -  NH2 ANGL. DEV. =  -7.8 DEGREES          
REMARK 500    ARG B  20   NE  -  CZ  -  NH1 ANGL. DEV. =   3.5 DEGREES          
REMARK 500    ARG B  25   NE  -  CZ  -  NH1 ANGL. DEV. =   5.4 DEGREES          
REMARK 500    ARG B  26   NE  -  CZ  -  NH1 ANGL. DEV. =   3.5 DEGREES          
REMARK 500    ARG B  62   NE  -  CZ  -  NH2 ANGL. DEV. =   3.2 DEGREES          
REMARK 500    GLU B  74   OE1 -  CD  -  OE2 ANGL. DEV. =  -7.9 DEGREES          
REMARK 500    ARG B 110   NE  -  CZ  -  NH1 ANGL. DEV. =   3.4 DEGREES          
REMARK 500    ARG B 113   CD  -  NE  -  CZ  ANGL. DEV. =  33.5 DEGREES          
REMARK 500    ARG B 113   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.9 DEGREES          
REMARK 500    ASP B 176   CB  -  CG  -  OD1 ANGL. DEV. =   5.4 DEGREES          
REMARK 500    ARG B 186   NE  -  CZ  -  NH1 ANGL. DEV. =   3.5 DEGREES          
REMARK 500    ARG B 186   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.2 DEGREES          
REMARK 500    ARG B 198   CD  -  NE  -  CZ  ANGL. DEV. =  26.4 DEGREES          
REMARK 500    ARG B 198   NE  -  CZ  -  NH1 ANGL. DEV. =  -6.0 DEGREES          
REMARK 500    ARG B 198   NE  -  CZ  -  NH2 ANGL. DEV. =   3.6 DEGREES          
REMARK 500    MET B 291   CG  -  SD  -  CE  ANGL. DEV. =  12.3 DEGREES          
REMARK 500    ARG B 315   NE  -  CZ  -  NH2 ANGL. DEV. =  -5.0 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    ALA A 129      150.74    179.37                                   
REMARK 500    TYR A 232      -43.73   -139.48                                   
REMARK 500    PRO A 261     -171.03    -60.77                                   
REMARK 500    PRO B 261     -170.66    -59.41                                   
REMARK 500    LEU B 333       89.23    -55.39                                   
REMARK 500    ARG B 334      -55.81   -169.40                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 600                                                                      
REMARK 600 HETEROGEN                                                            
REMARK 600                                                                      
REMARK 600 CARBONYL OXYGEN OF LEVULINIC ACID MISSING                            
REMARK 600                                                                      
REMARK 600 CARBONYL OXYGEN OF LEVULINIC ACID MISSING BECAUSE OF SCHIFF          
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                              MG A 402  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLU A 245   OE1                                                    
REMARK 620 2 HOH A 501   O    86.0                                              
REMARK 620 3 HOH A 502   O    97.7  89.8                                        
REMARK 620 4 HOH A 503   O   175.8  96.2  85.9                                  
REMARK 620 5 HOH A 504   O    83.4 166.4  83.3  94.9                            
REMARK 620 6 HOH A 505   O    90.9  93.3 171.0  85.3  95.4                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: MG1                                                 
REMARK 800 EVIDENCE_CODE: AUTHOR                                                
REMARK 800 SITE_DESCRIPTION: MG2+-BINDING SITE IN MOLECULE A                    
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: AUTHOR                                                
REMARK 800 SITE_DESCRIPTION: ACTIVE SITE IN MOLECULE A                          
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: AUTHOR                                                
REMARK 800 SITE_DESCRIPTION: ACTIVE SITE IN MOLECULE A                          
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 401                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 B 401                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 402                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC6                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SHF A 403                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC7                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SHF B 402                 
DBREF  1B4K A    1   337  UNP    Q59643   HEM2_PSEAE       1    337             
DBREF  1B4K B    1   337  UNP    Q59643   HEM2_PSEAE       1    337             
SEQRES   1 A  337  MET SER PHE THR PRO ALA ASN ARG ALA TYR PRO TYR THR          
SEQRES   2 A  337  ARG LEU ARG ARG ASN ARG ARG ASP ASP PHE SER ARG ARG          
SEQRES   3 A  337  LEU VAL ARG GLU ASN VAL LEU THR VAL ASP ASP LEU ILE          
SEQRES   4 A  337  LEU PRO VAL PHE VAL LEU ASP GLY VAL ASN GLN ARG GLU          
SEQRES   5 A  337  SER ILE PRO SER MET PRO GLY VAL GLU ARG LEU SER ILE          
SEQRES   6 A  337  ASP GLN LEU LEU ILE GLU ALA GLU GLU TRP VAL ALA LEU          
SEQRES   7 A  337  GLY ILE PRO ALA LEU ALA LEU PHE PRO VAL THR PRO VAL          
SEQRES   8 A  337  GLU LYS LYS SER LEU ASP ALA ALA GLU ALA TYR ASN PRO          
SEQRES   9 A  337  GLU GLY ILE ALA GLN ARG ALA THR ARG ALA LEU ARG GLU          
SEQRES  10 A  337  ARG PHE PRO GLU LEU GLY ILE ILE THR ASP VAL ALA LEU          
SEQRES  11 A  337  ASP PRO PHE THR THR HIS GLY GLN ASP GLY ILE LEU ASP          
SEQRES  12 A  337  ASP ASP GLY TYR VAL LEU ASN ASP VAL SER ILE ASP VAL          
SEQRES  13 A  337  LEU VAL ARG GLN ALA LEU SER HIS ALA GLU ALA GLY ALA          
SEQRES  14 A  337  GLN VAL VAL ALA PRO SER ASP MET MET ASP GLY ARG ILE          
SEQRES  15 A  337  GLY ALA ILE ARG GLU ALA LEU GLU SER ALA GLY HIS THR          
SEQRES  16 A  337  ASN VAL ARG ILE MET ALA TYR SER ALA LYS TYR ALA SER          
SEQRES  17 A  337  ALA TYR TYR GLY PRO PHE ARG ASP ALA VAL GLY SER ALA          
SEQRES  18 A  337  SER ASN LEU GLY LYS GLY ASN LYS ALA THR TYR GLN MET          
SEQRES  19 A  337  ASP PRO ALA ASN SER ASP GLU ALA LEU HIS GLU VAL ALA          
SEQRES  20 A  337  ALA ASP LEU ALA GLU GLY ALA ASP MET VAL MET VAL LYS          
SEQRES  21 A  337  PRO GLY MET PRO TYR LEU ASP ILE VAL ARG ARG VAL LYS          
SEQRES  22 A  337  ASP GLU PHE ARG ALA PRO THR PHE VAL TYR GLN VAL SER          
SEQRES  23 A  337  GLY GLU TYR ALA MET HIS MET GLY ALA ILE GLN ASN GLY          
SEQRES  24 A  337  TRP LEU ALA GLU SER VAL ILE LEU GLU SER LEU THR ALA          
SEQRES  25 A  337  PHE LYS ARG ALA GLY ALA ASP GLY ILE LEU THR TYR PHE          
SEQRES  26 A  337  ALA LYS GLN ALA ALA GLU GLN LEU ARG ARG GLY ARG              
SEQRES   1 B  337  MET SER PHE THR PRO ALA ASN ARG ALA TYR PRO TYR THR          
SEQRES   2 B  337  ARG LEU ARG ARG ASN ARG ARG ASP ASP PHE SER ARG ARG          
SEQRES   3 B  337  LEU VAL ARG GLU ASN VAL LEU THR VAL ASP ASP LEU ILE          
SEQRES   4 B  337  LEU PRO VAL PHE VAL LEU ASP GLY VAL ASN GLN ARG GLU          
SEQRES   5 B  337  SER ILE PRO SER MET PRO GLY VAL GLU ARG LEU SER ILE          
SEQRES   6 B  337  ASP GLN LEU LEU ILE GLU ALA GLU GLU TRP VAL ALA LEU          
SEQRES   7 B  337  GLY ILE PRO ALA LEU ALA LEU PHE PRO VAL THR PRO VAL          
SEQRES   8 B  337  GLU LYS LYS SER LEU ASP ALA ALA GLU ALA TYR ASN PRO          
SEQRES   9 B  337  GLU GLY ILE ALA GLN ARG ALA THR ARG ALA LEU ARG GLU          
SEQRES  10 B  337  ARG PHE PRO GLU LEU GLY ILE ILE THR ASP VAL ALA LEU          
SEQRES  11 B  337  ASP PRO PHE THR THR HIS GLY GLN ASP GLY ILE LEU ASP          
SEQRES  12 B  337  ASP ASP GLY TYR VAL LEU ASN ASP VAL SER ILE ASP VAL          
SEQRES  13 B  337  LEU VAL ARG GLN ALA LEU SER HIS ALA GLU ALA GLY ALA          
SEQRES  14 B  337  GLN VAL VAL ALA PRO SER ASP MET MET ASP GLY ARG ILE          
SEQRES  15 B  337  GLY ALA ILE ARG GLU ALA LEU GLU SER ALA GLY HIS THR          
SEQRES  16 B  337  ASN VAL ARG ILE MET ALA TYR SER ALA LYS TYR ALA SER          
SEQRES  17 B  337  ALA TYR TYR GLY PRO PHE ARG ASP ALA VAL GLY SER ALA          
SEQRES  18 B  337  SER ASN LEU GLY LYS GLY ASN LYS ALA THR TYR GLN MET          
SEQRES  19 B  337  ASP PRO ALA ASN SER ASP GLU ALA LEU HIS GLU VAL ALA          
SEQRES  20 B  337  ALA ASP LEU ALA GLU GLY ALA ASP MET VAL MET VAL LYS          
SEQRES  21 B  337  PRO GLY MET PRO TYR LEU ASP ILE VAL ARG ARG VAL LYS          
SEQRES  22 B  337  ASP GLU PHE ARG ALA PRO THR PHE VAL TYR GLN VAL SER          
SEQRES  23 B  337  GLY GLU TYR ALA MET HIS MET GLY ALA ILE GLN ASN GLY          
SEQRES  24 B  337  TRP LEU ALA GLU SER VAL ILE LEU GLU SER LEU THR ALA          
SEQRES  25 B  337  PHE LYS ARG ALA GLY ALA ASP GLY ILE LEU THR TYR PHE          
SEQRES  26 B  337  ALA LYS GLN ALA ALA GLU GLN LEU ARG ARG GLY ARG              
HET    SO4  A 401       5                                                       
HET     MG  A 402       1                                                       
HET    SHF  A 403       7                                                       
HET    SO4  B 401       5                                                       
HET    SHF  B 402       7                                                       
HETNAM     SO4 SULFATE ION                                                      
HETNAM      MG MAGNESIUM ION                                                    
HETNAM     SHF LAEVULINIC ACID                                                  
HETSYN     SHF LEVULINIC ACID                                                   
FORMUL   3  SO4    2(O4 S 2-)                                                   
FORMUL   4   MG    MG 2+                                                        
FORMUL   5  SHF    2(C5 H8 O3)                                                  
FORMUL   8  HOH   *572(H2 O)                                                    
HELIX    1   1 ARG A   16  ARG A   19  1                                   4    
HELIX    2   2 ASP A   22  VAL A   28  1                                   7    
HELIX    3   3 VAL A   35  ASP A   37  5                                   3    
HELIX    4   4 ILE A   65  LEU A   78  1                                  14    
HELIX    5   5 VAL A   91  LYS A   93  5                                   3    
HELIX    6   6 ALA A   99  TYR A  102  5                                   4    
HELIX    7   7 ILE A  107  ARG A  118  1                                  12    
HELIX    8   8 ASP A  151  ALA A  167  1                                  17    
HELIX    9   9 ARG A  181  SER A  191  1                                  11    
HELIX   10  10 ALA A  209  VAL A  218  5                                  10    
HELIX   11  11 ALA A  221  LEU A  224  1                                   4    
HELIX   12  12 ASP A  240  ALA A  251  1                                  12    
HELIX   13  13 MET A  263  PHE A  276  5                                  14    
HELIX   14  14 SER A  286  ASN A  298  1                                  13    
HELIX   15  15 GLU A  303  ALA A  316  5                                  14    
HELIX   16  16 ALA A  326  LEU A  333  1                                   8    
HELIX   17  17 ASP B   22  VAL B   28  1                                   7    
HELIX   18  18 VAL B   35  ASP B   37  5                                   3    
HELIX   19  19 ILE B   65  ALA B   77  1                                  13    
HELIX   20  20 VAL B   91  LYS B   93  5                                   3    
HELIX   21  21 ALA B   99  TYR B  102  5                                   4    
HELIX   22  22 ILE B  107  ARG B  118  1                                  12    
HELIX   23  23 ASP B  131  PHE B  133  5                                   3    
HELIX   24  24 ASN B  150  ALA B  167  1                                  18    
HELIX   25  25 ARG B  181  SER B  191  1                                  11    
HELIX   26  26 ALA B  209  VAL B  218  5                                  10    
HELIX   27  27 ASP B  240  ALA B  251  1                                  12    
HELIX   28  28 MET B  263  PHE B  276  5                                  14    
HELIX   29  29 SER B  286  GLN B  297  1                                  12    
HELIX   30  30 GLU B  303  ALA B  316  5                                  14    
HELIX   31  31 ALA B  326  GLN B  332  1                                   7    
SHEET    1   A 6 ARG A  51  SER A  53  0                                        
SHEET    2   A 6 GLU A  61  SER A  64 -1  N  ARG A  62   O  GLU A  52           
SHEET    3   A 6 ILE A  39  LEU A  45  1  N  PHE A  43   O  LEU A  63           
SHEET    4   A 6 ALA A  82  PRO A  87  1  N  ALA A  82   O  LEU A  40           
SHEET    5   A 6 GLY A 123  VAL A 128  1  N  GLY A 123   O  LEU A  83           
SHEET    6   A 6 VAL A 171  PRO A 174  1  N  VAL A 171   O  THR A 126           
SHEET    1   B 4 GLY A 320  THR A 323  0                                        
SHEET    2   B 4 THR A 280  GLN A 284  1  N  VAL A 282   O  GLY A 320           
SHEET    3   B 4 MET A 256  LYS A 260  1  N  VAL A 257   O  PHE A 281           
SHEET    4   B 4 MET A 200  LYS A 205  1  N  ALA A 201   O  MET A 256           
SHEET    1   C 4 ILE B  39  VAL B  44  0                                        
SHEET    2   C 4 ALA B  82  PRO B  87  1  N  ALA B  82   O  LEU B  40           
SHEET    3   C 4 GLY B 123  VAL B 128  1  N  GLY B 123   O  LEU B  83           
SHEET    4   C 4 VAL B 171  PRO B 174  1  N  VAL B 171   O  THR B 126           
SHEET    1   D 2 ARG B  51  SER B  53  0                                        
SHEET    2   D 2 GLU B  61  LEU B  63 -1  N  ARG B  62   O  GLU B  52           
SHEET    1   E 4 GLY B 320  THR B 323  0                                        
SHEET    2   E 4 THR B 280  GLN B 284  1  N  VAL B 282   O  GLY B 320           
SHEET    3   E 4 MET B 256  LYS B 260  1  N  VAL B 257   O  PHE B 281           
SHEET    4   E 4 MET B 200  LYS B 205  1  N  ALA B 201   O  MET B 256           
LINK         NZ  LYS A 260                 C4  SHF A 403     1555   1555  1.23  
LINK         NZ  LYS B 260                 C4  SHF B 402     1555   1555  1.30  
LINK         OE1 GLU A 245                MG    MG A 402     1555   1555  2.00  
LINK        MG    MG A 402                 O   HOH A 501     1555   1555  2.25  
LINK        MG    MG A 402                 O   HOH A 502     1555   1555  2.27  
LINK        MG    MG A 402                 O   HOH A 503     1555   1555  2.27  
LINK        MG    MG A 402                 O   HOH A 504     1555   1555  2.26  
LINK        MG    MG A 402                 O   HOH A 505     1555   1555  2.25  
CISPEP   1 TYR A   10    PRO A   11          0        -6.57                     
CISPEP   2 LYS A  260    PRO A  261          0        -6.13                     
CISPEP   3 TYR B   10    PRO B   11          0         2.56                     
CISPEP   4 LYS B  260    PRO B  261          0       -10.66                     
SITE     1 MG1  6  MG A 402  ASP A 179  ARG A 181  GLU A 245                    
SITE     2 MG1  6 ASP A 249  ARG B  19                                          
SITE     1 AC1  3 ASP A 139  LYS A 205  LYS A 260                               
SITE     1 AC2  3 ASP B 139  LYS B 205  LYS B 260                               
SITE     1 AC3  8 LYS A 205  TYR A 211  ARG A 215  LYS A 229                    
SITE     2 AC3  8 GLN A 233  SHF A 403  HOH A 582  HOH A 621                    
SITE     1 AC4  4 LYS B 205  ARG B 215  GLN B 233  SHF B 402                    
SITE     1 AC5  6 GLU A 245  HOH A 501  HOH A 502  HOH A 503                    
SITE     2 AC5  6 HOH A 504  HOH A 505                                          
SITE     1 AC6  9 LYS A 205  TYR A 211  PHE A 214  LYS A 260                    
SITE     2 AC6  9 TYR A 283  VAL A 285  SER A 286  TYR A 324                    
SITE     3 AC6  9 SO4 A 401                                                     
SITE     1 AC7  9 TYR B 211  PHE B 214  LYS B 260  TYR B 283                    
SITE     2 AC7  9 VAL B 285  SER B 286  TYR B 324  SO4 B 401                    
SITE     3 AC7  9 HOH B 690                                                     
CRYST1  128.240  128.240   86.220  90.00  90.00  90.00 P 4 21 2     16          
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      0.007798  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.007798  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.011598        0.00000                         
MTRIX1   1 -0.812422  0.582386 -0.028220      195.53990    1                    
MTRIX2   1  0.582564  0.812782  0.002297      -62.82350    1                    
MTRIX3   1  0.024275 -0.014573 -0.999599      -14.13950    1