HEADER    HEME PROTEIN                            26-FEB-98   1A6K              
TITLE     AQUOMET-MYOGLOBIN, ATOMIC RESOLUTION                                  
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: MYOGLOBIN;                                                 
COMPND   3 CHAIN: A                                                             
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: PHYSETER CATODON;                               
SOURCE   3 ORGANISM_COMMON: SPERM WHALE;                                        
SOURCE   4 ORGANISM_TAXID: 9755                                                 
KEYWDS    HEME PROTEIN, MODEL COMPOUNDS, OXYGEN STORAGE, LIGAND BINDING         
KEYWDS   2 GEOMETRY, CONFORMATIONAL SUBSTATES                                   
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    J.VOJTECHOVSKY,J.BERENDZEN,K.CHU,I.SCHLICHTING,R.M.SWEET              
REVDAT   5   22-MAY-24 1A6K    1       REMARK                                   
REVDAT   4   02-AUG-23 1A6K    1       REMARK LINK                              
REVDAT   3   24-FEB-09 1A6K    1       VERSN                                    
REVDAT   2   14-JUN-05 1A6K    1       AUTHOR JRNL                              
REVDAT   1   06-APR-99 1A6K    0                                                
JRNL        AUTH   J.VOJTECHOVSKY,K.CHU,J.BERENDZEN,R.M.SWEET,I.SCHLICHTING     
JRNL        TITL   CRYSTAL STRUCTURES OF MYOGLOBIN-LIGAND COMPLEXES AT          
JRNL        TITL 2 NEAR-ATOMIC RESOLUTION.                                      
JRNL        REF    BIOPHYS.J.                    V.  77  2153 1999              
JRNL        REFN                   ISSN 0006-3495                               
JRNL        PMID   10512835                                                     
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.10 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : SHELXL-97                                            
REMARK   3   AUTHORS     : G.M.SHELDRICK                                        
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.10                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 8.00                           
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   COMPLETENESS FOR RANGE        (%) : 98.0                           
REMARK   3   CROSS-VALIDATION METHOD           : FREE R-VALUE                   
REMARK   3   FREE R VALUE TEST SET SELECTION   : NULL                           
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT (NO CUTOFF).                         
REMARK   3   R VALUE   (WORKING + TEST SET, NO CUTOFF) : 0.132                  
REMARK   3   R VALUE          (WORKING SET, NO CUTOFF) : 0.131                  
REMARK   3   FREE R VALUE                  (NO CUTOFF) : 0.153                  
REMARK   3   FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : 5.000                  
REMARK   3   FREE R VALUE TEST SET COUNT   (NO CUTOFF) : 2541                   
REMARK   3   TOTAL NUMBER OF REFLECTIONS   (NO CUTOFF) : 51286                  
REMARK   3                                                                      
REMARK   3  FIT/AGREEMENT OF MODEL FOR DATA WITH F>4SIG(F).                     
REMARK   3   R VALUE   (WORKING + TEST SET, F>4SIG(F)) : 0.125                  
REMARK   3   R VALUE          (WORKING SET, F>4SIG(F)) : 0.124                  
REMARK   3   FREE R VALUE                  (F>4SIG(F)) : 0.144                  
REMARK   3   FREE R VALUE TEST SET SIZE (%, F>4SIG(F)) : 5.000                  
REMARK   3   FREE R VALUE TEST SET COUNT   (F>4SIG(F)) : 2330                   
REMARK   3   TOTAL NUMBER OF REFLECTIONS   (F>4SIG(F)) : 46498                  
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS      : 1204                                          
REMARK   3   NUCLEIC ACID ATOMS : 0                                             
REMARK   3   HETEROGEN ATOMS    : 58                                            
REMARK   3   SOLVENT ATOMS      : 185                                           
REMARK   3                                                                      
REMARK   3  MODEL REFINEMENT.                                                   
REMARK   3   OCCUPANCY SUM OF NON-HYDROGEN ATOMS      : 1420.0                  
REMARK   3   OCCUPANCY SUM OF HYDROGEN ATOMS          : 1263.0                  
REMARK   3   NUMBER OF DISCRETELY DISORDERED RESIDUES : 26                      
REMARK   3   NUMBER OF LEAST-SQUARES PARAMETERS       : 14244                   
REMARK   3   NUMBER OF RESTRAINTS                     : 18493                   
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM RESTRAINT TARGET VALUES.                        
REMARK   3   BOND LENGTHS                         (A) : 0.017                   
REMARK   3   ANGLE DISTANCES                      (A) : 0.034                   
REMARK   3   SIMILAR DISTANCES (NO TARGET VALUES) (A) : NULL                    
REMARK   3   DISTANCES FROM RESTRAINT PLANES      (A) : 0.023                   
REMARK   3   ZERO CHIRAL VOLUMES               (A**3) : 0.098                   
REMARK   3   NON-ZERO CHIRAL VOLUMES           (A**3) : 0.127                   
REMARK   3   ANTI-BUMPING DISTANCE RESTRAINTS     (A) : NULL                    
REMARK   3   RIGID-BOND ADP COMPONENTS         (A**2) : 0.007                   
REMARK   3   SIMILAR ADP COMPONENTS            (A**2) : 0.046                   
REMARK   3   APPROXIMATELY ISOTROPIC ADPS      (A**2) : 0.071                   
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED: MOEWS & KRETSINGER                                    
REMARK   3                                                                      
REMARK   3  STEREOCHEMISTRY TARGET VALUES : ENGH & HUBER                        
REMARK   3   SPECIAL CASE: HEME - PARAMETERS BASED ON CSD                       
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS:                                           
REMARK   3  NO GEOMETRIC RESTRAINTS APPLIED TO IRON AND THE PLANAR ATOMS OF     
REMARK   3  THE HEME.                                                           
REMARK   3                                                                      
REMARK   3  BAYESIAN DIFFERENCE REFINEMENT WAS USED AT THE FINAL STEP.          
REMARK   3   SEE TERWILLIGER AND BERENDZEN, ACTA CRYST. D52:1004-1011.          
REMARK   3   (1996).                                                            
REMARK   3                                                                      
REMARK   3  THE SOLVENT MOLECULES 81, 129, 130, 139 AND 151 CAN BE              
REMARK   3  MODELED ONLY FOR ONE ALTERNATIVE PROTEIN CONFORMATION.              
REMARK   3                                                                      
REMARK   3  SULFATE NEAR DISTAL HISTIDINE MODELED AS A DISORDERED               
REMARK   3  MOLECULE.                                                           
REMARK   4                                                                      
REMARK   4 1A6K 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_1000170455.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : JAN-97                             
REMARK 200  TEMPERATURE           (KELVIN) : 90                                 
REMARK 200  PH                             : 7.0                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : NSLS                               
REMARK 200  BEAMLINE                       : X12C                               
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                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE AREA DETECTOR          
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   : 51794                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.100                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 50.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : -3.000                             
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 98.0                               
REMARK 200  DATA REDUNDANCY                : NULL                               
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : 0.04600                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 25.0000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.10                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.15                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 97.0                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : 0.29500                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 6.000                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: NULL                                           
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: AMORE                                                 
REMARK 200 STARTING MODEL: 1MBC                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 36.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.90                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PH 7.0                                   
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 21 1                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,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        0.00000            
REMARK 290   SMTRY2   2  0.000000  1.000000  0.000000       15.36500            
REMARK 290   SMTRY3   2  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: MONOMERIC                         
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 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    HIS A  64   CE1   HIS A  64   NE2    -0.067                       
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    GLN A  26   CB  -  CA  -  C   ANGL. DEV. =  12.2 DEGREES          
REMARK 500    ARG A  31   NE  -  CZ  -  NH1 ANGL. DEV. =  -4.5 DEGREES          
REMARK 500    ASP A  44   CB  -  CG  -  OD2 ANGL. DEV. =  -6.2 DEGREES          
REMARK 500    TYR A 103   CB  -  CG  -  CD1 ANGL. DEV. =   3.9 DEGREES          
REMARK 500    ARG A 118   NE  -  CZ  -  NH1 ANGL. DEV. =   4.3 DEGREES          
REMARK 500    ASP A 126   CB  -  CG  -  OD1 ANGL. DEV. =   7.7 DEGREES          
REMARK 500    ASP A 126   CB  -  CG  -  OD1 ANGL. DEV. =   8.2 DEGREES          
REMARK 500    ARG A 139   NH1 -  CZ  -  NH2 ANGL. DEV. =  -7.4 DEGREES          
REMARK 500    ARG A 139   NE  -  CZ  -  NH2 ANGL. DEV. =   5.9 DEGREES          
REMARK 500    TYR A 146   CB  -  CG  -  CD2 ANGL. DEV. =  -4.0 DEGREES          
REMARK 500    TYR A 146   CB  -  CG  -  CD1 ANGL. DEV. =   3.8 DEGREES          
REMARK 500    TYR A 146   CB  -  CG  -  CD1 ANGL. DEV. =   3.9 DEGREES          
REMARK 500    TYR A 151   CD1 -  CE1 -  CZ  ANGL. DEV. =  -5.8 DEGREES          
REMARK 500    TYR A 151   CZ  -  CE2 -  CD2 ANGL. DEV. =  -5.5 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    ASP A  20       66.14   -153.63                                   
REMARK 500    LYS A  98       62.36     60.45                                   
REMARK 500    PHE A 123       47.37   -143.75                                   
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                             HEM A 154  FE                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HIS A  93   NE2                                                    
REMARK 620 2 HEM A 154   NA   93.7                                              
REMARK 620 3 HEM A 154   NB   93.7  88.4                                        
REMARK 620 4 HEM A 154   NC   92.3 173.7  89.2                                  
REMARK 620 5 HEM A 154   ND   92.4  91.1 174.0  90.7                            
REMARK 620 6 HOH A1001   O   175.5  90.1  89.0  84.1  85.0                      
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 SO4 A 155                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 156                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 1188                
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM A 154                 
DBREF  1A6K A    1   151  UNP    P02185   MYG_PHYCA        1    151             
SEQRES   1 A  151  VAL LEU SER GLU GLY GLU TRP GLN LEU VAL LEU HIS VAL          
SEQRES   2 A  151  TRP ALA LYS VAL GLU ALA ASP VAL ALA GLY HIS GLY GLN          
SEQRES   3 A  151  ASP ILE LEU ILE ARG LEU PHE LYS SER HIS PRO GLU THR          
SEQRES   4 A  151  LEU GLU LYS PHE ASP ARG PHE LYS HIS LEU LYS THR GLU          
SEQRES   5 A  151  ALA GLU MET LYS ALA SER GLU ASP LEU LYS LYS HIS GLY          
SEQRES   6 A  151  VAL THR VAL LEU THR ALA LEU GLY ALA ILE LEU LYS LYS          
SEQRES   7 A  151  LYS GLY HIS HIS GLU ALA GLU LEU LYS PRO LEU ALA GLN          
SEQRES   8 A  151  SER HIS ALA THR LYS HIS LYS ILE PRO ILE LYS TYR LEU          
SEQRES   9 A  151  GLU PHE ILE SER GLU ALA ILE ILE HIS VAL LEU HIS SER          
SEQRES  10 A  151  ARG HIS PRO GLY ASP PHE GLY ALA ASP ALA GLN GLY ALA          
SEQRES  11 A  151  MET ASN LYS ALA LEU GLU LEU PHE ARG LYS ASP ILE ALA          
SEQRES  12 A  151  ALA LYS TYR LYS GLU LEU GLY TYR                              
HET    SO4  A 155       5                                                       
HET    SO4  A 156       5                                                       
HET    SO4  A1188      10                                                       
HET    HEM  A 154      43                                                       
HETNAM     SO4 SULFATE ION                                                      
HETNAM     HEM PROTOPORPHYRIN IX CONTAINING FE                                  
HETSYN     HEM HEME                                                             
FORMUL   2  SO4    3(O4 S 2-)                                                   
FORMUL   5  HEM    C34 H32 FE N4 O4                                             
FORMUL   6  HOH   *185(H2 O)                                                    
HELIX    1   1 GLU A    4  SER A   35  1                                  32    
HELIX    2   2 PRO A   37  LYS A   42  1                                   6    
HELIX    3   3 GLU A   52  LYS A   56  1                                   5    
HELIX    4   4 GLU A   59  LYS A   78  1                                  20    
HELIX    5   5 GLU A   83  THR A   95  1                                  13    
HELIX    6   6 ILE A  101  ARG A  118  1                                  18    
HELIX    7   7 PRO A  120  ASP A  122  5                                   3    
HELIX    8   8 ALA A  125  LEU A  149  1                                  25    
LINK         NE2 HIS A  93                FE   HEM A 154     1555   1555  2.14  
LINK        FE   HEM A 154                 O   HOH A1001     1555   1555  2.13  
SITE     1 AC1  8 ALA A  57  SER A  58  GLU A  59  ASP A  60                    
SITE     2 AC1  8 HOH A1007  HOH A1026  HOH A1038  HOH A1086                    
SITE     1 AC2  5 GLN A  26  LYS A  62  HOH A1043  HOH A1045                    
SITE     2 AC2  5 HOH A1063                                                     
SITE     1 AC3  6 ARG A  45  HIS A  64  THR A  67  HIS A 116                    
SITE     2 AC3  6 HOH A1088  HOH A1123                                          
SITE     1 AC4 23 THR A  39  LYS A  42  PHE A  43  ARG A  45                    
SITE     2 AC4 23 HIS A  64  THR A  67  VAL A  68  LEU A  89                    
SITE     3 AC4 23 SER A  92  HIS A  93  HIS A  97  ILE A  99                    
SITE     4 AC4 23 TYR A 103  LEU A 104  PHE A 138  HOH A1001                    
SITE     5 AC4 23 HOH A1024  HOH A1033  HOH A1059  HOH A1088                    
SITE     6 AC4 23 HOH A1092  HOH A1118  HOH A1149                               
CRYST1   63.900   30.730   34.360  90.00 105.70  90.00 P 1 21 1      2          
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      0.015649  0.000000  0.004399        0.00000                         
SCALE2      0.000000  0.032541  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.030231        0.00000