HEADER    OXIDOREDUCTASE                          10-JUN-02   1IX4              
TITLE     CRYSTAL STRUCTURE OF RAT HEME OXYGENASE-1 IN COMPLEX WITH HEME BOUND  
TITLE    2 TO CARBON MONOXIDE                                                   
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: HEME OXYGENASE-1;                                          
COMPND   3 CHAIN: A;                                                            
COMPND   4 FRAGMENT: SOLUBLE FRAGMENT TRUNCATED C-TERMINAL TRANSMEMBRANE HELIX; 
COMPND   5 SYNONYM: HO-1, HSP32;                                                
COMPND   6 EC: 1.14.99.3;                                                       
COMPND   7 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: RATTUS NORVEGICUS;                              
SOURCE   3 ORGANISM_COMMON: NORWAY RAT;                                         
SOURCE   4 ORGANISM_TAXID: 10116;                                               
SOURCE   5 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   6 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   7 EXPRESSION_SYSTEM_STRAIN: JM109;                                     
SOURCE   8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE   9 EXPRESSION_SYSTEM_PLASMID: PUC18                                     
KEYWDS    HEMEPROTEIN, INHIBITOR COMPLEX, OXIDOREDUCTASE                        
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    M.SUGISHIMA,H.SAKAMOTO,Y.OMATA,S.HAYASHI,M.NOGUCHI,K.FUKUYAMA         
REVDAT   4   03-APR-24 1IX4    1       REMARK                                   
REVDAT   3   27-DEC-23 1IX4    1       REMARK LINK                              
REVDAT   2   24-FEB-09 1IX4    1       VERSN                                    
REVDAT   1   02-SEP-03 1IX4    0                                                
JRNL        AUTH   M.SUGISHIMA,H.SAKAMOTO,M.NOGUCHI,K.FUKUYAMA                  
JRNL        TITL   CRYSTAL STRUCTURES OF FERROUS AND CO-, CN(-)-, AND NO-BOUND  
JRNL        TITL 2 FORMS OF RAT HEME OXYGENASE-1 (HO-1) IN COMPLEX WITH HEME:   
JRNL        TITL 3 STRUCTURAL IMPLICATIONS FOR DISCRIMINATION BETWEEN CO AND    
JRNL        TITL 4 O(2) IN HO-1.                                                
JRNL        REF    BIOCHEMISTRY                  V.  42  9898 2003              
JRNL        REFN                   ISSN 0006-2960                               
JRNL        PMID   12924938                                                     
JRNL        DOI    10.1021/BI027268I                                            
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   M.SUGISHIMA,H.SAKAMOTO,Y.HIGASHIMOTO,Y.OMATA,S.HAYASHI,      
REMARK   1  AUTH 2 M.NOGUCHI,K.FUKUYAMA                                         
REMARK   1  TITL   CRYSTAL STRUCTURE OF RAT HEME OXYGENASE-1 IN COMPLEX WITH    
REMARK   1  TITL 2 HEME BOUND TO AZIDE. IMPLICATION FOR REGIOSPECIFIC           
REMARK   1  TITL 3 HYDROXYLATION OF HEME AT THE ALPHA-MESO CARBON.              
REMARK   1  REF    J.BIOL.CHEM.                  V. 277 45086 2003              
REMARK   1  REFN                   ISSN 0021-9258                               
REMARK   1  DOI    10.1074/JBC.M207267200                                       
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.80 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS                                                  
REMARK   3   AUTHORS     : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE-              
REMARK   3               : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU,              
REMARK   3               : READ,RICE,SIMONSON,WARREN                            
REMARK   3                                                                      
REMARK   3  REFINEMENT TARGET : ENGH & HUBER                                    
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.80                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 50.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : NULL                           
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 88.1                           
REMARK   3   NUMBER OF REFLECTIONS             : 25369                          
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 SET) : 0.195                           
REMARK   3   FREE R VALUE                     : 0.214                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : NULL                            
REMARK   3   FREE R VALUE TEST SET COUNT      : 2813                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : NULL                            
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : NULL                         
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 1.80                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.86                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 93.80                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : NULL                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2270                       
REMARK   3   BIN FREE R VALUE                    : 0.2470                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 245                          
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : NULL                         
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 1711                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 45                                      
REMARK   3   SOLVENT ATOMS            : 176                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : NULL                           
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : NULL                                                 
REMARK   3    B22 (A**2) : NULL                                                 
REMARK   3    B33 (A**2) : NULL                                                 
REMARK   3    B12 (A**2) : NULL                                                 
REMARK   3    B13 (A**2) : NULL                                                 
REMARK   3    B23 (A**2) : NULL                                                 
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : 0.20                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.09                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : 5.00                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : 0.23                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.13                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.005                           
REMARK   3   BOND ANGLES            (DEGREES) : NULL                            
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 18.56                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 0.780                           
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : 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  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : NULL                                                 
REMARK   3   KSOL        : NULL                                                 
REMARK   3   BSOL        : NULL                                                 
REMARK   3                                                                      
REMARK   3  NCS MODEL : NULL                                                    
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS.                         RMS   SIGMA/WEIGHT          
REMARK   3   GROUP  1  POSITIONAL            (A) : NULL  ; NULL                 
REMARK   3   GROUP  1  B-FACTOR           (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  PARAMETER FILE  1  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1IX4 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 12-JUN-02.                  
REMARK 100 THE DEPOSITION ID IS D_1000005364.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 29-MAY-02                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 7.0                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : SPRING-8                           
REMARK 200  BEAMLINE                       : BL41XU                             
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.000                              
REMARK 200  MONOCHROMATOR                  : SI(111) DOUBLE-MONOCHROMATOR       
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
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   : 28311                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.800                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 50.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.4                               
REMARK 200  DATA REDUNDANCY                : 11.80                              
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : 0.06700                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 14.8000                            
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     (%) : 91.2                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : 0.31100                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: CNS                                                   
REMARK 200 STARTING MODEL: PDB ENTRY                                            
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 55.65                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.79                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: SODIUM FORMATE, SODIUM AZIDE,            
REMARK 280  POTASSIUM FORMATE, PH 7.0, VAPOR DIFFUSION, HANGING DROP,           
REMARK 280  TEMPERATURE 293K                                                    
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 32 2 1                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -Y,X-Y,Z+2/3                                            
REMARK 290       3555   -X+Y,-X,Z+1/3                                           
REMARK 290       4555   Y,X,-Z                                                  
REMARK 290       5555   X-Y,-Y,-Z+1/3                                           
REMARK 290       6555   -X,-X+Y,-Z+2/3                                          
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       80.16000            
REMARK 290   SMTRY1   3 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   3 -0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000       40.08000            
REMARK 290   SMTRY1   4 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   4  0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   5  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   5  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   5  0.000000  0.000000 -1.000000       40.08000            
REMARK 290   SMTRY1   6 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   6 -0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   6  0.000000  0.000000 -1.000000       80.16000            
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 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     GLU A     2                                                      
REMARK 465     ARG A     3                                                      
REMARK 465     PRO A     4                                                      
REMARK 465     GLN A     5                                                      
REMARK 465     LEU A     6                                                      
REMARK 465     ASP A     7                                                      
REMARK 465     SER A     8                                                      
REMARK 465     MET A     9                                                      
REMARK 465     SER A    10                                                      
REMARK 465     GLU A   223                                                      
REMARK 465     GLU A   224                                                      
REMARK 465     HIS A   225                                                      
REMARK 465     LYS A   226                                                      
REMARK 465     ASP A   227                                                      
REMARK 465     GLN A   228                                                      
REMARK 465     SER A   229                                                      
REMARK 465     PRO A   230                                                      
REMARK 465     SER A   231                                                      
REMARK 465     GLN A   232                                                      
REMARK 465     THR A   233                                                      
REMARK 465     GLU A   234                                                      
REMARK 465     PHE A   235                                                      
REMARK 465     LEU A   236                                                      
REMARK 465     ARG A   237                                                      
REMARK 465     GLN A   238                                                      
REMARK 465     ARG A   239                                                      
REMARK 465     PRO A   240                                                      
REMARK 465     ALA A   241                                                      
REMARK 465     SER A   242                                                      
REMARK 465     LEU A   243                                                      
REMARK 465     VAL A   244                                                      
REMARK 465     GLN A   245                                                      
REMARK 465     ASP A   246                                                      
REMARK 465     THR A   247                                                      
REMARK 465     THR A   248                                                      
REMARK 465     SER A   249                                                      
REMARK 465     ALA A   250                                                      
REMARK 465     GLU A   251                                                      
REMARK 465     THR A   252                                                      
REMARK 465     PRO A   253                                                      
REMARK 465     ARG A   254                                                      
REMARK 465     GLY A   255                                                      
REMARK 465     LYS A   256                                                      
REMARK 465     SER A   257                                                      
REMARK 465     GLN A   258                                                      
REMARK 465     ILE A   259                                                      
REMARK 465     SER A   260                                                      
REMARK 465     THR A   261                                                      
REMARK 465     SER A   262                                                      
REMARK 465     SER A   263                                                      
REMARK 465     SER A   264                                                      
REMARK 465     GLN A   265                                                      
REMARK 465     THR A   266                                                      
REMARK 465     PRO A   267                                                      
REMARK 470                                                                      
REMARK 470 MISSING ATOM                                                         
REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER;           
REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER;          
REMARK 470 I=INSERTION CODE):                                                   
REMARK 470   M RES CSSEQI  ATOMS                                                
REMARK 470     GLU A  19    CG   CD   OE1  OE2                                  
REMARK 470     GLU A  45    CG   CD   OE1  OE2                                  
REMARK 470     LYS A 177    CG   CD   CE   NZ                                   
REMARK 470     GLU A 190    CG   CD   OE1  OE2                                  
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    TYR A  74      -31.38   -140.79                                   
REMARK 500    HIS A 100       42.94   -105.35                                   
REMARK 500    SER A 142      -99.94   -110.32                                   
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 300  FE                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HIS A  25   NE2                                                    
REMARK 620 2 HEM A 300   NA   88.9                                              
REMARK 620 3 HEM A 300   NB   91.4  89.8                                        
REMARK 620 4 HEM A 300   NC   90.2 178.9  89.7                                  
REMARK 620 5 HEM A 300   ND   87.9  90.2 179.3  90.3                            
REMARK 620 6 CMO A1001   C   176.8  94.0  90.1  86.9  90.6                      
REMARK 620 7 CMO A1001   O   170.4 100.0  85.0  80.9  95.7   7.9                
REMARK 620 N                    1     2     3     4     5     6                 
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM A 300                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CMO A 1001                
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1DVE   RELATED DB: PDB                                   
REMARK 900 1DVE CONTAINS CRYSTAL STRUCTURE OF THE SAME PROTEIN COMPLEX WITH     
REMARK 900 HEME                                                                 
REMARK 900 RELATED ID: 1IVJ   RELATED DB: PDB                                   
REMARK 900 1IVJ CONTAINS CRYSTAL STRUCTURE OF THE SAME PROTEIN COMPLEX WITH     
REMARK 900 AZIDE                                                                
REMARK 900 RELATED ID: 1QQ8   RELATED DB: PDB                                   
REMARK 900 1QQ8 CONTAINS CRYSTAL STRUCTURE OF THE SAME PROTEIN FROM HOMO        
REMARK 900 SAPIENS                                                              
REMARK 900 RELATED ID: 1J77   RELATED DB: PDB                                   
REMARK 900 1J77 CONTAINS CRYSTAL STRUCTURE OF THE SAME PROTEIN FROM NEISSERIA   
REMARK 900 MENINGITIDIS                                                         
REMARK 900 RELATED ID: 1IX3   RELATED DB: PDB                                   
REMARK 900 1IX3 CONTAINS CRYSTAL STRUCTURE OF THE SAME PROTEIN COMPLEX WITH     
REMARK 900 CYANIDE                                                              
DBREF  1IX4 A    1   267  UNP    P06762   HMOX1_RAT        1    267             
SEQRES   1 A  267  MET GLU ARG PRO GLN LEU ASP SER MET SER GLN ASP LEU          
SEQRES   2 A  267  SER GLU ALA LEU LYS GLU ALA THR LYS GLU VAL HIS ILE          
SEQRES   3 A  267  ARG ALA GLU ASN SER GLU PHE MET ARG ASN PHE GLN LYS          
SEQRES   4 A  267  GLY GLN VAL SER ARG GLU GLY PHE LYS LEU VAL MET ALA          
SEQRES   5 A  267  SER LEU TYR HIS ILE TYR THR ALA LEU GLU GLU GLU ILE          
SEQRES   6 A  267  GLU ARG ASN LYS GLN ASN PRO VAL TYR ALA PRO LEU TYR          
SEQRES   7 A  267  PHE PRO GLU GLU LEU HIS ARG ARG ALA ALA LEU GLU GLN          
SEQRES   8 A  267  ASP MET ALA PHE TRP TYR GLY PRO HIS TRP GLN GLU ALA          
SEQRES   9 A  267  ILE PRO TYR THR PRO ALA THR GLN HIS TYR VAL LYS ARG          
SEQRES  10 A  267  LEU HIS GLU VAL GLY GLY THR HIS PRO GLU LEU LEU VAL          
SEQRES  11 A  267  ALA HIS ALA TYR THR ARG TYR LEU GLY ASP LEU SER GLY          
SEQRES  12 A  267  GLY GLN VAL LEU LYS LYS ILE ALA GLN LYS ALA MET ALA          
SEQRES  13 A  267  LEU PRO SER SER GLY GLU GLY LEU ALA PHE PHE THR PHE          
SEQRES  14 A  267  PRO SER ILE ASP ASN PRO THR LYS PHE LYS GLN LEU TYR          
SEQRES  15 A  267  ARG ALA ARG MET ASN THR LEU GLU MET THR PRO GLU VAL          
SEQRES  16 A  267  LYS HIS ARG VAL THR GLU GLU ALA LYS THR ALA PHE LEU          
SEQRES  17 A  267  LEU ASN ILE GLU LEU PHE GLU GLU LEU GLN ALA LEU LEU          
SEQRES  18 A  267  THR GLU GLU HIS LYS ASP GLN SER PRO SER GLN THR GLU          
SEQRES  19 A  267  PHE LEU ARG GLN ARG PRO ALA SER LEU VAL GLN ASP THR          
SEQRES  20 A  267  THR SER ALA GLU THR PRO ARG GLY LYS SER GLN ILE SER          
SEQRES  21 A  267  THR SER SER SER GLN THR PRO                                  
HET    HEM  A 300      43                                                       
HET    CMO  A1001       2                                                       
HETNAM     HEM PROTOPORPHYRIN IX CONTAINING FE                                  
HETNAM     CMO CARBON MONOXIDE                                                  
HETSYN     HEM HEME                                                             
FORMUL   2  HEM    C34 H32 FE N4 O4                                             
FORMUL   3  CMO    C O                                                          
FORMUL   4  HOH   *176(H2 O)                                                    
HELIX    1   1 ASP A   12  ASN A   30  1                                  19    
HELIX    2   2 SER A   31  LYS A   39  1                                   9    
HELIX    3   3 SER A   43  ASN A   68  1                                  26    
HELIX    4   4 TYR A   74  TYR A   78  5                                   5    
HELIX    5   5 PHE A   79  HIS A   84  1                                   6    
HELIX    6   6 ARG A   85  GLY A   98  1                                  14    
HELIX    7   7 HIS A  100  ALA A  104  5                                   5    
HELIX    8   8 THR A  108  HIS A  125  1                                  18    
HELIX    9   9 LEU A  128  LEU A  141  1                                  14    
HELIX   10  10 SER A  142  ALA A  156  1                                  15    
HELIX   11  11 LEU A  164  THR A  168  5                                   5    
HELIX   12  12 ASN A  174  ASN A  187  1                                  14    
HELIX   13  13 THR A  192  THR A  222  1                                  31    
LINK         NE2 HIS A  25                FE   HEM A 300     1555   1555  2.17  
LINK        FE   HEM A 300                 C   CMO A1001     1555   1555  1.98  
LINK        FE   HEM A 300                 O   CMO A1001     1555   1555  3.01  
SITE     1 AC1 20 LYS A  18  HIS A  25  GLU A  29  MET A  34                    
SITE     2 AC1 20 GLN A  38  TYR A 134  THR A 135  ARG A 136                    
SITE     3 AC1 20 GLY A 139  SER A 142  GLY A 143  LEU A 147                    
SITE     4 AC1 20 ARG A 183  PHE A 207  ASN A 210  PHE A 214                    
SITE     5 AC1 20 CMO A1001  HOH A1018  HOH A1078  HOH A1150                    
SITE     1 AC2  5 GLY A 139  GLY A 143  GLY A 144  HEM A 300                    
SITE     2 AC2  5 HOH A1108                                                     
CRYST1   66.000   66.000  120.240  90.00  90.00 120.00 P 32 2 1      6          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.015152  0.008748  0.000000        0.00000                         
SCALE2      0.000000  0.017495  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.008317        0.00000