HEADER    OXIDOREDUCTASE                          13-JUL-09   3I9U              
TITLE     CRYSTAL STRUCTURE OF THE RAT HEME OXYGENASE (HO-1) IN COMPLEX WITH    
TITLE    2 HEME BINDING DITHIOERYTHRITOL (DTE)                                  
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: HEME OXYGENASE 1;                                          
COMPND   3 CHAIN: A;                                                            
COMPND   4 FRAGMENT: UNP RESIDUES 1-261;                                        
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: RAT;                                                
SOURCE   4 ORGANISM_TAXID: 10116;                                               
SOURCE   5 GENE: HMOX1;                                                         
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE   9 EXPRESSION_SYSTEM_PLASMID: PMW                                       
KEYWDS    HEME OXYGENASE, INHIBITOR, ISOZYME, OXIDOREDUCTASE, ENDOPLASMIC       
KEYWDS   2 RETICULUM, HEME, IRON, METAL-BINDING, MICROSOME, PHOSPHOPROTEIN      
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    T.MATSUI,M.UNNO,M.IKEDA-SAITO                                         
REVDAT   2   01-NOV-23 3I9U    1       REMARK SEQADV                            
REVDAT   1   19-MAY-10 3I9U    0                                                
JRNL        AUTH   T.MATSUI,M.IWASAKI,R.SUGIYAMA,M.UNNO,M.IKEDA-SAITO           
JRNL        TITL   DIOXYGEN ACTIVATION FOR THE SELF-DEGRADATION OF HEME:        
JRNL        TITL 2 REACTION MECHANISM AND REGULATION OF HEME OXYGENASE.         
JRNL        REF    INORG.CHEM.                   V.  49  3602 2010              
JRNL        REFN                   ISSN 0020-1669                               
JRNL        PMID   20380462                                                     
JRNL        DOI    10.1021/IC901869T                                            
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.25 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.2.0005                                      
REMARK   3   AUTHORS     : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER,              
REMARK   3               : NICHOLLS,WINN,LONG,VAGIN                             
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : MAXIMUM LIKELIHOOD                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.25                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 30.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   COMPLETENESS FOR RANGE        (%) : 100.0                          
REMARK   3   NUMBER OF REFLECTIONS             : 14140                          
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) : 0.170                           
REMARK   3   R VALUE            (WORKING SET) : 0.167                           
REMARK   3   FREE R VALUE                     : 0.223                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.100                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 754                             
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 20                           
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.25                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.31                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 1017                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 100.0                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2070                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 49                           
REMARK   3   BIN FREE R VALUE                    : 0.3270                       
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          : 51                                      
REMARK   3   SOLVENT ATOMS            : 101                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 30.59                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 29.13                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 1.76000                                              
REMARK   3    B22 (A**2) : 1.76000                                              
REMARK   3    B33 (A**2) : -2.63000                                             
REMARK   3    B12 (A**2) : 0.88000                                              
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): 0.202         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.185         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.121         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 10.826        
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.961                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.939                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  1812 ; 0.024 ; 0.022       
REMARK   3   BOND LENGTHS OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  2468 ; 1.913 ; 2.034       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   211 ; 5.673 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):    87 ;37.719 ;23.793       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   297 ;16.255 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):    11 ;15.260 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   258 ; 0.129 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  1394 ; 0.010 ; 0.021       
REMARK   3   GENERAL PLANES OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW REFINED ATOMS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):  NULL ;  NULL ;  NULL       
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):  1060 ; 1.060 ; 1.500       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  1701 ; 1.912 ; 2.000       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):   752 ; 3.170 ; 3.000       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):   767 ; 5.026 ; 4.500       
REMARK   3   SIDE-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B REFINED ATOMS     (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B OTHER ATOMS       (A**2):  NULL ;  NULL ;  NULL       
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 : NULL                              
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : 3                                          
REMARK   3                                                                      
REMARK   3   TLS GROUP : 1                                                      
REMARK   3    NUMBER OF COMPONENTS GROUP : 1                                    
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   A    11        A   222                          
REMARK   3    ORIGIN FOR THE GROUP (A):  -7.2903 -36.0557-164.0508              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.0039 T22:   0.0368                                     
REMARK   3      T33:   0.0073 T12:   0.0046                                     
REMARK   3      T13:   0.0000 T23:   0.0046                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   0.1533 L22:   0.3967                                     
REMARK   3      L33:   1.2768 L12:  -0.1731                                     
REMARK   3      L13:  -0.1906 L23:   0.3535                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:  -0.0089 S12:  -0.0190 S13:   0.0173                       
REMARK   3      S21:   0.0023 S22:   0.0026 S23:  -0.0079                       
REMARK   3      S31:   0.0551 S32:  -0.0036 S33:   0.0063                       
REMARK   3                                                                      
REMARK   3   TLS GROUP : 2                                                      
REMARK   3    NUMBER OF COMPONENTS GROUP : 1                                    
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   A   300        A   300                          
REMARK   3    ORIGIN FOR THE GROUP (A):  -2.2020 -27.3906-168.0463              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.0297 T22:   0.0517                                     
REMARK   3      T33:   0.0526 T12:   0.0021                                     
REMARK   3      T13:  -0.0283 T23:  -0.0102                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   3.0471 L22:   3.7442                                     
REMARK   3      L33:   2.6891 L12:   0.0059                                     
REMARK   3      L13:  -0.0667 L23:   1.5219                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:  -0.1336 S12:   0.2367 S13:   0.0109                       
REMARK   3      S21:   0.0446 S22:   0.0446 S23:  -0.3173                       
REMARK   3      S31:  -0.1965 S32:  -0.1305 S33:   0.0889                       
REMARK   3                                                                      
REMARK   3   TLS GROUP : 3                                                      
REMARK   3    NUMBER OF COMPONENTS GROUP : 1                                    
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   A  2001        A  2001                          
REMARK   3    ORIGIN FOR THE GROUP (A):  -3.2904 -33.0346-168.9029              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.0215 T22:   0.0753                                     
REMARK   3      T33:   0.1052 T12:  -0.0370                                     
REMARK   3      T13:  -0.0209 T23:   0.0186                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   2.6720 L22:   8.2743                                     
REMARK   3      L33:  20.5210 L12:   4.7020                                     
REMARK   3      L13:  -7.4048 L23: -13.0305                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:  -0.0861 S12:   0.2748 S13:   0.1445                       
REMARK   3      S21:  -0.1558 S22:   0.4859 S23:   0.2564                       
REMARK   3      S31:   0.2428 S32:  -0.7579 S33:  -0.3998                       
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED : 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 RIDING   
REMARK   3  POSITIONS                                                           
REMARK   4                                                                      
REMARK   4 3I9U COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 16-JUL-09.                  
REMARK 100 THE DEPOSITION ID IS D_1000054145.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 02-FEB-06                          
REMARK 200  TEMPERATURE           (KELVIN) : 95                                 
REMARK 200  PH                             : 7.4                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : PHOTON FACTORY                     
REMARK 200  BEAMLINE                       : BL-6A                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1                                  
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 4R                    
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : HKL-2000                           
REMARK 200  DATA SCALING SOFTWARE          : HKL-2000                           
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 14964                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.250                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 50.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.9                               
REMARK 200  DATA REDUNDANCY                : 7.200                              
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : 0.06200                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 32.1000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.25                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.33                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 99.9                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 7.30                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : 0.32900                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 7.040                              
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 3I9T                                       
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 50.53                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.49                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 3.2M SODIUM FORMATE, 10MM SODIUM         
REMARK 280  AZIDE, 5MM DTV, PH7.4, VAPOR DIFFUSION, 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       80.16267            
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       40.08133            
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       40.08133            
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       80.16267            
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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC                  
REMARK 350 SOFTWARE USED: PISA                                                  
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     ARG A   262                                                      
REMARK 465     LEU A   263                                                      
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     GLN A  11    CG   CD   OE1  NE2                                  
REMARK 470     GLN A  91    CG   CD   OE1  NE2                                  
REMARK 470     LYS A 149    CG   CD   CE   NZ                                   
REMARK 470     LYS A 177    CG   CD   CE   NZ                                   
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT                     
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT.                            
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI           DISTANCE          
REMARK 500   OH   TYR A    74     O    HOH A   352              2.06            
REMARK 500   O    HOH A   314     O    HOH A   317              2.19            
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    ARG A  35   NE  -  CZ  -  NH1 ANGL. DEV. =   3.3 DEGREES          
REMARK 500    ARG A 185   NE  -  CZ  -  NH1 ANGL. DEV. =   3.9 DEGREES          
REMARK 500    ARG A 198   NE  -  CZ  -  NH1 ANGL. DEV. =   3.2 DEGREES          
REMARK 500    ARG A 198   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.9 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    TYR A  74      -31.55   -130.94                                   
REMARK 500    SER A 142     -103.73   -119.89                                   
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   89.3                                              
REMARK 620 3 HEM A 300   NB   87.3  90.4                                        
REMARK 620 4 HEM A 300   NC   90.8 175.9  85.5                                  
REMARK 620 5 HEM A 300   ND   93.5  89.0 179.0  95.0                            
REMARK 620 6 DTU A2001   S1  178.7  90.9  91.4  88.9  87.8                      
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 HEM A 300                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE DTU A 2001                
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 3I9T   RELATED DB: PDB                                   
REMARK 900 SAME PROTEIN WITH SIMILAR LIGAND                                     
DBREF  3I9U A    1   261  UNP    P06762   HMOX1_RAT        1    261             
SEQADV 3I9U ARG A  262  UNP  P06762              EXPRESSION TAG                 
SEQADV 3I9U LEU A  263  UNP  P06762              EXPRESSION TAG                 
SEQRES   1 A  263  MET GLU ARG PRO GLN LEU ASP SER MET SER GLN ASP LEU          
SEQRES   2 A  263  SER GLU ALA LEU LYS GLU ALA THR LYS GLU VAL HIS ILE          
SEQRES   3 A  263  ARG ALA GLU ASN SER GLU PHE MET ARG ASN PHE GLN LYS          
SEQRES   4 A  263  GLY GLN VAL SER ARG GLU GLY PHE LYS LEU VAL MET ALA          
SEQRES   5 A  263  SER LEU TYR HIS ILE TYR THR ALA LEU GLU GLU GLU ILE          
SEQRES   6 A  263  GLU ARG ASN LYS GLN ASN PRO VAL TYR ALA PRO LEU TYR          
SEQRES   7 A  263  PHE PRO GLU GLU LEU HIS ARG ARG ALA ALA LEU GLU GLN          
SEQRES   8 A  263  ASP MET ALA PHE TRP TYR GLY PRO HIS TRP GLN GLU ALA          
SEQRES   9 A  263  ILE PRO TYR THR PRO ALA THR GLN HIS TYR VAL LYS ARG          
SEQRES  10 A  263  LEU HIS GLU VAL GLY GLY THR HIS PRO GLU LEU LEU VAL          
SEQRES  11 A  263  ALA HIS ALA TYR THR ARG TYR LEU GLY ASP LEU SER GLY          
SEQRES  12 A  263  GLY GLN VAL LEU LYS LYS ILE ALA GLN LYS ALA MET ALA          
SEQRES  13 A  263  LEU PRO SER SER GLY GLU GLY LEU ALA PHE PHE THR PHE          
SEQRES  14 A  263  PRO SER ILE ASP ASN PRO THR LYS PHE LYS GLN LEU TYR          
SEQRES  15 A  263  ARG ALA ARG MET ASN THR LEU GLU MET THR PRO GLU VAL          
SEQRES  16 A  263  LYS HIS ARG VAL THR GLU GLU ALA LYS THR ALA PHE LEU          
SEQRES  17 A  263  LEU ASN ILE GLU LEU PHE GLU GLU LEU GLN ALA LEU LEU          
SEQRES  18 A  263  THR GLU GLU HIS LYS ASP GLN SER PRO SER GLN THR GLU          
SEQRES  19 A  263  PHE LEU ARG GLN ARG PRO ALA SER LEU VAL GLN ASP THR          
SEQRES  20 A  263  THR SER ALA GLU THR PRO ARG GLY LYS SER GLN ILE SER          
SEQRES  21 A  263  THR ARG LEU                                                  
HET    HEM  A 300      43                                                       
HET    DTU  A2001       8                                                       
HETNAM     HEM PROTOPORPHYRIN IX CONTAINING FE                                  
HETNAM     DTU (2R,3S)-1,4-DIMERCAPTOBUTANE-2,3-DIOL                            
HETSYN     HEM HEME                                                             
FORMUL   2  HEM    C34 H32 FE N4 O4                                             
FORMUL   3  DTU    C4 H10 O2 S2                                                 
FORMUL   4  HOH   *101(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  ILE A  105  1                                   6    
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  2.06  
LINK        FE   HEM A 300                 S1  DTU A2001     1555   1555  2.23  
SITE     1 AC1 17 LYS A  18  HIS A  25  GLU A  29  MET A  34                    
SITE     2 AC1 17 GLN A  38  TYR A 134  THR A 135  GLY A 139                    
SITE     3 AC1 17 SER A 142  GLY A 143  ARG A 183  PHE A 207                    
SITE     4 AC1 17 ASN A 210  PHE A 214  HOH A 287  HOH A 354                    
SITE     5 AC1 17 DTU A2001                                                     
SITE     1 AC2 10 ARG A 136  GLY A 139  ASP A 140  GLY A 143                    
SITE     2 AC2 10 GLY A 144  LEU A 147  HOH A 267  HOH A 268                    
SITE     3 AC2 10 HEM A 300  HOH A 365                                          
CRYST1   65.882   65.882  120.244  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      0.015179  0.008763  0.000000        0.00000                         
SCALE2      0.000000  0.017527  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.008316        0.00000