PDB entry 2hz1

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HEADER    OXYGEN STORAGE/TRANSPORT                08-AUG-06   2HZ1              
TITLE     THE X-RAY CRYSTAL STRUCTURE OF FERROUS SYNECHOCYSTIS                  
TITLE    2 HEMOGLOBIN WITH A COVALENT LINKAGE                                   
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: CYANOGLOBIN;                                               
COMPND   3 CHAIN: A;                                                            
COMPND   4 SYNONYM: HEMOGLOBIN, HB;                                             
COMPND   5 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: SYNECHOCYSTIS SP.;                              
SOURCE   3 STRAIN: PCC 6803;                                                    
SOURCE   4 GENE: GLBN;                                                          
SOURCE   5 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   6 EXPRESSION_SYSTEM_COMMON: BACTERIA                                   
KEYWDS    SYNECHOCYSTIS, HEMOGLOBIN, HEME, GLOBIN, FERROUS,                     
KEYWDS   2 HEXACOORDINATE, COVALENT HEME VINYL LINK                             
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    J.A.HOY                                                               
REVDAT   2   13-FEB-07 2HZ1    1       JRNL                                     
REVDAT   1   29-AUG-06 2HZ1    0                                                
JRNL        AUTH   J.A.HOY,B.J.SMAGGHE,P.HALDER,M.S.HARGROVE                    
JRNL        TITL   COVALENT HEME ATTACHMENT IN SYNECHOCYSTIS                    
JRNL        TITL 2 HEMOGLOBIN IS REQUIRED TO PREVENT FERROUS HEME               
JRNL        TITL 3 DISSOCIATION                                                 
JRNL        REF    PROTEIN SCI.                  V.  16   250 2007              
JRNL        REFN   ASTM PRCIEI  US ISSN 0961-8368                               
REMARK   1                                                                      
REMARK   2                                                                      
REMARK   2 RESOLUTION. 1.80 ANGSTROMS.                                          
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.1.24                                        
REMARK   3   AUTHORS     : MURSHUDOV,VAGIN,DODSON                               
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : MAXIMUM LIKELIHOOD                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.80                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 37.27                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 99.9                           
REMARK   3   NUMBER OF REFLECTIONS             : 11435                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : THROUGHOUT                      
REMARK   3   FREE R VALUE TEST SET SELECTION  : RANDOM                          
REMARK   3   R VALUE     (WORKING + TEST SET) : 0.191                           
REMARK   3   R VALUE            (WORKING SET) : 0.189                           
REMARK   3   FREE R VALUE                     : 0.238                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 598                             
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 20                           
REMARK   3   BIN RESOLUTION RANGE HIGH           : 1.80                         
REMARK   3   BIN RESOLUTION RANGE LOW            : 1.85                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 823                          
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : NULL                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2510                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 44                           
REMARK   3   BIN FREE R VALUE                    : 0.3630                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   ALL ATOMS                : 1154                                    
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 18.30                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -0.09000                                             
REMARK   3    B22 (A**2) : -0.73000                                             
REMARK   3    B33 (A**2) : 0.83000                                              
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): 0.142         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.139         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.091         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 2.856         
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.948                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.919                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  1044 ; 0.016 ; 0.021       
REMARK   3   BOND LENGTHS OTHERS               (A):   908 ; 0.002 ; 0.020       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  1417 ; 1.596 ; 2.011       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  2100 ; 0.958 ; 3.000       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   122 ; 5.345 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   146 ; 0.100 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  1192 ; 0.016 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):   221 ; 0.016 ; 0.020       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):   308 ; 0.256 ; 0.200       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  1095 ; 0.238 ; 0.200       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION OTHERS         (A):   529 ; 0.091 ; 0.200       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):    90 ; 0.267 ; 0.200       
REMARK   3   H-BOND (X...Y) OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION REFINED ATOMS (A):     1 ; 0.011 ; 0.200       
REMARK   3   POTENTIAL METAL-ION OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW REFINED ATOMS        (A):    19 ; 0.331 ; 0.200       
REMARK   3   SYMMETRY VDW OTHERS               (A):    45 ; 0.285 ; 0.200       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):    14 ; 0.226 ; 0.200       
REMARK   3   SYMMETRY H-BOND OTHERS            (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.     COUNT   RMS    WEIGHT      
REMARK   3   MAIN-CHAIN BOND REFINED ATOMS  (A**2):   608 ; 0.946 ; 1.500       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):   962 ; 1.723 ; 2.000       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):   436 ; 2.710 ; 3.000       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):   455 ; 4.181 ; 4.500       
REMARK   3                                                                      
REMARK   3 ANISOTROPIC THERMAL FACTOR RESTRAINTS.    COUNT   RMS   WEIGHT       
REMARK   3   RIGID-BOND RESTRAINTS          (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; FREE ATOMS         (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; BONDED ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS STATISTICS                                           
REMARK   3   NUMBER OF DIFFERENT NCS GROUPS : 0                                 
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : 0                                          
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED : BABINET MODEL WITH MASK                              
REMARK   3   PARAMETERS FOR MASK CALCULATION                                    
REMARK   3   VDW PROBE RADIUS   : 1.40                                          
REMARK   3   ION PROBE RADIUS   : 0.80                                          
REMARK   3   SHRINKAGE RADIUS   : 0.80                                          
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THE          
REMARK   3  RIDING POSITIONS                                                    
REMARK   4                                                                      
REMARK   4 2HZ1 COMPLIES WITH FORMAT V. 3.0, 1-DEC-2006                         
REMARK   4                                                                      
REMARK   4 THIS IS THE REMEDIATED VERSION OF THIS PDB ENTRY.                    
REMARK   4 REMEDIATED DATA FILE REVISION 3.101 (2007-05-29)                     
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB .                              
REMARK 100 THE RCSB ID CODE IS RCSB038930.                                      
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 01-OCT-2005                        
REMARK 200  TEMPERATURE           (KELVIN) : 100.0                              
REMARK 200  PH                             : 6.50                               
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : N                                  
REMARK 200  RADIATION SOURCE               : ROTATING ANODE                     
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : RIGAKU RU200                       
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.54                               
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : RIGAKU RAXIS IV                    
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : D*TREK                             
REMARK 200  DATA SCALING SOFTWARE          : D*TREK                             
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 11435                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.800                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 37.270                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.9                               
REMARK 200  DATA REDUNDANCY                : 6.830                              
REMARK 200  R MERGE                    (I) : 0.04600                            
REMARK 200  R SYM                      (I) : 0.24800                            
REMARK 200   FOR THE DATA SET  : NULL                               
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.80                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.86                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 99.0                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 6.68                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.14300                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200   FOR SHELL         : 9.600                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: AMORE                                                 
REMARK 200 STARTING MODEL: PDB ENTRY 1RTX                                       
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 45.51                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.26                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 31% PEG MME 5000, 0.1 M MES, 0.2 M       
REMARK 280  AMMONIUM SULFATE, 0.01 M CADMIUM CHLORIDE, 0.01 M SODIUM            
REMARK 280  HEPES, PH 6.5, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 298K      
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21                       
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   1/2-X,-Y,1/2+Z                                          
REMARK 290       3555   -X,1/2+Y,1/2-Z                                          
REMARK 290       4555   1/2+X,1/2-Y,-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       21.33100            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       31.31050            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       23.25150            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       31.31050            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       21.33100            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       23.25150            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 THIS ENTRY CONTAINS THE CRYSTALLOGRAPHIC ASYMMETRIC UNIT             
REMARK 300 WHICH CONSISTS OF 1 CHAIN(S). SEE REMARK 350 FOR                     
REMARK 300 INFORMATION ON GENERATING THE BIOLOGICAL MOLECULE(S).                
REMARK 350                                                                      
REMARK 350 GENERATING THE BIOMOLECULE                                           
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 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: 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                             
REMARK 500   O    HOH     113     O    HOH     128              1.39            
REMARK 500   OG1  THR A     3     O    HOH      18              1.74            
REMARK 500   O1   SO3     204     O    HOH       7              1.98            
REMARK 500   NZ   LYS A    71     O    HOH      64              2.08            
REMARK 500   N    SER A     2     O    HOH      29              2.17            
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),F6.3)                  
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: ENGH AND HUBER, 1991                                
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   RES CSSEQI ATM2   DEVIATION                     
REMARK 500    MET A  66   SD    MET A  66   CE    -0.127                        
REMARK 525                                                                      
REMARK 525 SOLVENT                                                              
REMARK 525 THE FOLLOWING SOLVENT MOLECULES LIE FARTHER THAN EXPECTED            
REMARK 525 FROM THE PROTEIN OR NUCLEIC ACID MOLECULE AND MAY BE                 
REMARK 525 ASSOCIATED WITH A SYMMETRY RELATED MOLECULE (M=MODEL                 
REMARK 525 NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE          
REMARK 525 NUMBER; I=INSERTION CODE):                                           
REMARK 525                                                                      
REMARK 525  M RES CSSEQI                                                        
REMARK 525    HOH    79        DISTANCE =  5.47 ANGSTROMS                       
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 2HZ2   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 2HZ3   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1RTX   RELATED DB: PDB                                   
DBREF  2HZ1 A    2   124  UNP    P73925   GLBN_SYNY3       2    124             
SEQRES   1 A  123  SER THR LEU TYR GLU LYS LEU GLY GLY THR THR ALA VAL          
SEQRES   2 A  123  ASP LEU ALA VAL ASP LYS PHE TYR GLU ARG VAL LEU GLN          
SEQRES   3 A  123  ASP ASP ARG ILE LYS HIS PHE PHE ALA ASP VAL ASP MET          
SEQRES   4 A  123  ALA LYS GLN ARG ALA HIS GLN LYS ALA PHE LEU THR TYR          
SEQRES   5 A  123  ALA PHE GLY GLY THR ASP LYS TYR ASP GLY ARG TYR MET          
SEQRES   6 A  123  ARG GLU ALA HIS LYS GLU LEU VAL GLU ASN HIS GLY LEU          
SEQRES   7 A  123  ASN GLY GLU HIS PHE ASP ALA VAL ALA GLU ASP LEU LEU          
SEQRES   8 A  123  ALA THR LEU LYS GLU MET GLY VAL PRO GLU ASP LEU ILE          
SEQRES   9 A  123  ALA GLU VAL ALA ALA VAL ALA GLY ALA PRO ALA HIS LYS          
SEQRES  10 A  123  ARG ASP VAL LEU ASN GLN                                      
HET     CD    201       1                                                       
HET     CD    202       1                                                       
HET    SO3    204       4                                                       
HET    HEM  A 125      43                                                       
HET    SO2    203       3                                                       
HET    SO2    205       3                                                       
HETNAM      CD CADMIUM ION                                                      
HETNAM     SO3 SULFITE ION                                                      
HETNAM     HEM PROTOPORPHYRIN IX CONTAINING FE                                  
HETNAM     SO2 SULFUR DIOXIDE                                                   
HETSYN     HEM HEME                                                             
FORMUL   2   CD    2(CD 2+)                                                     
FORMUL   4  SO3    O3 S 2-                                                      
FORMUL   5  HEM    C34 H32 FE N4 O4                                             
FORMUL   6  SO2    2(O2 S)                                                      
FORMUL   8  HOH   *130(H2 O)                                                    
HELIX    1   1 THR A    3  GLY A    9  1                                   7    
HELIX    2   2 GLY A   10  GLN A   27  1                                  18    
HELIX    3   3 ILE A   31  ALA A   36  5                                   6    
HELIX    4   4 ASP A   39  GLY A   56  1                                  18    
HELIX    5   5 GLY A   57  TYR A   61  5                                   5    
HELIX    6   6 ASP A   62  HIS A   77  1                                  16    
HELIX    7   7 ASN A   80  MET A   98  1                                  19    
HELIX    8   8 PRO A  101  GLY A  113  1                                  13    
HELIX    9   9 ALA A  114  LEU A  122  1                                   9    
LINK         NE2 HIS A  46                FE   HEM A 125                        
LINK         NE2 HIS A  70                FE   HEM A 125                        
CRYST1   42.662   46.503   62.621  90.00  90.00  90.00 P 21 21 21    4          
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      0.023440  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.021504  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.015969        0.00000