PDB Short entry for 2HI4
HEADER    OXIDOREDUCTASE                          29-JUN-06   2HI4              
TITLE     CRYSTAL STRUCTURE OF HUMAN MICROSOMAL P450 1A2 IN COMPLEX WITH ALPHA- 
TITLE    2 NAPHTHOFLAVONE                                                       
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: CYTOCHROME P450 1A2;                                       
COMPND   3 CHAIN: A;                                                            
COMPND   4 FRAGMENT: RESIDUES 26-514;                                           
COMPND   5 SYNONYM: CYPIA2, P450-P3, P3, 450, P450 4;                           
COMPND   6 EC: 1.14.14.1;                                                       
COMPND   7 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   3 ORGANISM_COMMON: HUMAN;                                              
SOURCE   4 ORGANISM_TAXID: 9606;                                                
SOURCE   5 GENE: CYP1A2;                                                        
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   8 EXPRESSION_SYSTEM_STRAIN: DH5ALPHA;                                  
SOURCE   9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  10 EXPRESSION_SYSTEM_PLASMID: PCWORI                                    
KEYWDS    CYP1A2, P450 1A2, P450, MONOOXYGENASE, DRUG METABOLIZING ENZYME,      
KEYWDS   2 ALPHA-NAPHTHOFLAVONE, BENZO(H)FLAVONE, 7, 8-BENZOFLAVONE,            
KEYWDS   3 OXIDOREDUCTASE, HEME                                                 
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    S.SANSEN,J.K.YANO,R.L.REYNALD,G.S.SCHOCH,C.D.STOUT,E.F.JOHNSON        
REVDAT   5   30-AUG-23 2HI4    1       REMARK SEQADV LINK                       
REVDAT   4   18-OCT-17 2HI4    1       REMARK                                   
REVDAT   3   24-FEB-09 2HI4    1       VERSN                                    
REVDAT   2   31-JUL-07 2HI4    1       JRNL                                     
REVDAT   1   20-FEB-07 2HI4    0                                                
JRNL        AUTH   S.SANSEN,J.K.YANO,R.L.REYNALD,G.A.SCHOCH,K.J.GRIFFIN,        
JRNL        AUTH 2 C.D.STOUT,E.F.JOHNSON                                        
JRNL        TITL   ADAPTATIONS FOR THE OXIDATION OF POLYCYCLIC AROMATIC         
JRNL        TITL 2 HYDROCARBONS EXHIBITED BY THE STRUCTURE OF HUMAN P450 1A2.   
JRNL        REF    J.BIOL.CHEM.                  V. 282 14348 2007              
JRNL        REFN                   ISSN 0021-9258                               
JRNL        PMID   17311915                                                     
JRNL        DOI    10.1074/JBC.M611692200                                       
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.95 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS 1.1                                              
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) : 1.95                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 29.51                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 2726889.250                    
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : 0.0000                         
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 91.1                           
REMARK   3   NUMBER OF REFLECTIONS             : 38022                          
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) : 0.226                           
REMARK   3   FREE R VALUE                     : 0.267                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 4.900                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 1871                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : 0.006                           
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 6                            
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 1.95                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.07                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 94.20                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 6145                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.3710                       
REMARK   3   BIN FREE R VALUE                    : 0.3830                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 5.00                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 325                          
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.021                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 3845                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 64                                      
REMARK   3   SOLVENT ATOMS            : 160                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 23.73                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 37.60                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 24.99000                                             
REMARK   3    B22 (A**2) : -12.86000                                            
REMARK   3    B33 (A**2) : -12.13000                                            
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 COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : 0.24                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.37                            
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) : 0.30                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.41                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.019                           
REMARK   3   BOND ANGLES            (DEGREES) : 2.000                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 22.30                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 1.260                           
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : RESTRAINED                                
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 : FLAT MODEL                                           
REMARK   3   KSOL        : 0.42                                                 
REMARK   3   BSOL        : 68.45                                                
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  : PROTEIN_REP.PARAM                              
REMARK   3  PARAMETER FILE  2  : WATER_REP.PARAM                                
REMARK   3  PARAMETER FILE  3  : XDICT_HEME_RELAX.PAR                           
REMARK   3  PARAMETER FILE  4  : BHF.PAR                                        
REMARK   3  PARAMETER FILE  5  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : PROTEIN.TOP                                    
REMARK   3  TOPOLOGY FILE  2   : WATER.TOP                                      
REMARK   3  TOPOLOGY FILE  3   : XDICT_HEME.TOP                                 
REMARK   3  TOPOLOGY FILE  4   : BHF.TOP                                        
REMARK   3  TOPOLOGY FILE  5   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 2HI4 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 30-JUN-06.                  
REMARK 100 THE DEPOSITION ID IS D_1000038372.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 09-APR-06                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 8.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : SSRL                               
REMARK 200  BEAMLINE                       : BL11-1                             
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.97945                            
REMARK 200  MONOCHROMATOR                  : SIDE SCATTERING BENT CUBE-ROOT I   
REMARK 200                                   -BEAM SINGLE CRYSTAL; ASYMMETRIC   
REMARK 200                                   CUT 4.965 DEGS                     
REMARK 200  OPTICS                         : FLAT MIRROR (VERTICAL FOCUSING);   
REMARK 200                                   SINGLE CRYSTAL SI(111) BENT        
REMARK 200                                   MONOCHROMATOR (HO RIZONTAL         
REMARK 200                                   FOCUSING)                          
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 315                   
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : MOSFLM                             
REMARK 200  DATA SCALING SOFTWARE          : SCALA, CCP4 (SCALA)                
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 41139                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.900                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 88.045                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 92.2                               
REMARK 200  DATA REDUNDANCY                : 5.000                              
REMARK 200  R MERGE                    (I) : 0.09200                            
REMARK 200  R SYM                      (I) : 0.09200                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 4.0000                             
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.90                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.95                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 95.2                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 4.90                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.39400                            
REMARK 200  R SYM FOR SHELL            (I) : 0.39400                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 1.500                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: PHASER                                                
REMARK 200 STARTING MODEL: CYP2A6, PDB ENTRY 1Z10                               
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 51.02                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.51                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PEG3350, TRIS, AMMONIUM NITRATE, CYMAL   
REMARK 280  -6 (CYCLOHEXYL-HEXYL-BETA-D-MALTOSIDE), C12E8                       
REMARK 280  (OCTAETHYLENEGLYCOL MONO-N-DODECYL ETHER) , PH 8.5, VAPOR           
REMARK 280  DIFFUSION, HANGING DROP, TEMPERATURE 291K                           
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: I 2 2 2                          
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,-Y,Z                                                 
REMARK 290       3555   -X,Y,-Z                                                 
REMARK 290       4555   X,-Y,-Z                                                 
REMARK 290       5555   X+1/2,Y+1/2,Z+1/2                                       
REMARK 290       6555   -X+1/2,-Y+1/2,Z+1/2                                     
REMARK 290       7555   -X+1/2,Y+1/2,-Z+1/2                                     
REMARK 290       8555   X+1/2,-Y+1/2,-Z+1/2                                     
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   4  0.000000 -1.000000  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       39.81500            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       40.41000            
REMARK 290   SMTRY3   5  0.000000  0.000000  1.000000       87.91000            
REMARK 290   SMTRY1   6 -1.000000  0.000000  0.000000       39.81500            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       40.41000            
REMARK 290   SMTRY3   6  0.000000  0.000000  1.000000       87.91000            
REMARK 290   SMTRY1   7 -1.000000  0.000000  0.000000       39.81500            
REMARK 290   SMTRY2   7  0.000000  1.000000  0.000000       40.41000            
REMARK 290   SMTRY3   7  0.000000  0.000000 -1.000000       87.91000            
REMARK 290   SMTRY1   8  1.000000  0.000000  0.000000       39.81500            
REMARK 290   SMTRY2   8  0.000000 -1.000000  0.000000       40.41000            
REMARK 290   SMTRY3   8  0.000000  0.000000 -1.000000       87.91000            
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 300 REMARK: THE BIOLOGICAL ASSEMBLY HAS NOT BEEN DETERMINED BUT THOUGHT  
REMARK 300 TO BE A MONOMER                                                      
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    25                                                      
REMARK 465     ALA A    26                                                      
REMARK 465     VAL A    27                                                      
REMARK 465     LEU A    28                                                      
REMARK 465     LYS A    29                                                      
REMARK 465     GLY A    30                                                      
REMARK 465     LEU A    31                                                      
REMARK 465     ARG A    32                                                      
REMARK 465     PRO A    33                                                      
REMARK 465     ILE A   514                                                      
REMARK 465     ASN A   515                                                      
REMARK 465     HIS A   516                                                      
REMARK 465     HIS A   517                                                      
REMARK 465     HIS A   518                                                      
REMARK 465     HIS A   519                                                      
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 243   NE  -  CZ  -  NH1 ANGL. DEV. =   4.0 DEGREES          
REMARK 500    ARG A 243   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.8 DEGREES          
REMARK 500    LEU A 382   CA  -  CB  -  CG  ANGL. DEV. = -18.1 DEGREES          
REMARK 500    ARG A 392   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.9 DEGREES          
REMARK 500    ARG A 456   NE  -  CZ  -  NH2 ANGL. DEV. =  -5.5 DEGREES          
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    LEU A  50      -48.38     71.10                                   
REMARK 500    VAL A  99      -66.61   -107.33                                   
REMARK 500    THR A 118     -114.17     41.20                                   
REMARK 500    SER A 129       24.28   -145.05                                   
REMARK 500    SER A 148      -78.66   -138.94                                   
REMARK 500    SER A 157      -14.89   -151.68                                   
REMARK 500    ALA A 230       58.29    -91.78                                   
REMARK 500    ASP A 274       64.31   -101.92                                   
REMARK 500    SER A 279       74.96   -151.69                                   
REMARK 500    LEU A 365       58.51   -112.69                                   
REMARK 500    GLU A 422      -85.70    -53.49                                   
REMARK 500    CYS A 458      125.60    -38.06                                   
REMARK 500    ARG A 511     -176.26    -69.10                                   
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 900  FE                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS A 458   SG                                                     
REMARK 620 2 HEM A 900   NA  105.2                                              
REMARK 620 3 HEM A 900   NB   93.6  91.6                                        
REMARK 620 4 HEM A 900   NC   88.7 165.7  84.2                                  
REMARK 620 5 HEM A 900   ND  106.1  85.3 160.2  93.9                            
REMARK 620 N                    1     2     3     4                             
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 900                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BHF A 800                 
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1Z10   RELATED DB: PDB                                   
REMARK 900 HUMAN MICROSOMAL P450 2A6 WITH COUMARIN BOUND, USED AS MR SEARCH     
REMARK 900 PROBE                                                                
REMARK 900 RELATED ID: 1PQ2   RELATED DB: PDB                                   
REMARK 900 HUMAN DRUG METABOLIZING FAMILY 2 P450 2C8                            
REMARK 900 RELATED ID: 1R90   RELATED DB: PDB                                   
REMARK 900 HUMAN DRUG METABOLIZING FAMILY 2 P450 2C9                            
REMARK 900 RELATED ID: 1TQN   RELATED DB: PDB                                   
REMARK 900 HUMAN DRUG METABOLIZING FAMILY 3 P450 3A4                            
DBREF  2HI4 A   27   515  UNP    P05177   CP1A2_HUMAN     26    514             
SEQADV 2HI4 MET A   25  UNP  P05177              CLONING ARTIFACT               
SEQADV 2HI4 ALA A   26  UNP  P05177              CLONING ARTIFACT               
SEQADV 2HI4 HIS A  516  UNP  P05177              EXPRESSION TAG                 
SEQADV 2HI4 HIS A  517  UNP  P05177              EXPRESSION TAG                 
SEQADV 2HI4 HIS A  518  UNP  P05177              EXPRESSION TAG                 
SEQADV 2HI4 HIS A  519  UNP  P05177              EXPRESSION TAG                 
SEQRES   1 A  495  MET ALA VAL LEU LYS GLY LEU ARG PRO ARG VAL PRO LYS          
SEQRES   2 A  495  GLY LEU LYS SER PRO PRO GLU PRO TRP GLY TRP PRO LEU          
SEQRES   3 A  495  LEU GLY HIS VAL LEU THR LEU GLY LYS ASN PRO HIS LEU          
SEQRES   4 A  495  ALA LEU SER ARG MET SER GLN ARG TYR GLY ASP VAL LEU          
SEQRES   5 A  495  GLN ILE ARG ILE GLY SER THR PRO VAL LEU VAL LEU SER          
SEQRES   6 A  495  ARG LEU ASP THR ILE ARG GLN ALA LEU VAL ARG GLN GLY          
SEQRES   7 A  495  ASP ASP PHE LYS GLY ARG PRO ASP LEU TYR THR SER THR          
SEQRES   8 A  495  LEU ILE THR ASP GLY GLN SER LEU THR PHE SER THR ASP          
SEQRES   9 A  495  SER GLY PRO VAL TRP ALA ALA ARG ARG ARG LEU ALA GLN          
SEQRES  10 A  495  ASN ALA LEU ASN THR PHE SER ILE ALA SER ASP PRO ALA          
SEQRES  11 A  495  SER SER SER SER CYS TYR LEU GLU GLU HIS VAL SER LYS          
SEQRES  12 A  495  GLU ALA LYS ALA LEU ILE SER ARG LEU GLN GLU LEU MET          
SEQRES  13 A  495  ALA GLY PRO GLY HIS PHE ASP PRO TYR ASN GLN VAL VAL          
SEQRES  14 A  495  VAL SER VAL ALA ASN VAL ILE GLY ALA MET CYS PHE GLY          
SEQRES  15 A  495  GLN HIS PHE PRO GLU SER SER ASP GLU MET LEU SER LEU          
SEQRES  16 A  495  VAL LYS ASN THR HIS GLU PHE VAL GLU THR ALA SER SER          
SEQRES  17 A  495  GLY ASN PRO LEU ASP PHE PHE PRO ILE LEU ARG TYR LEU          
SEQRES  18 A  495  PRO ASN PRO ALA LEU GLN ARG PHE LYS ALA PHE ASN GLN          
SEQRES  19 A  495  ARG PHE LEU TRP PHE LEU GLN LYS THR VAL GLN GLU HIS          
SEQRES  20 A  495  TYR GLN ASP PHE ASP LYS ASN SER VAL ARG ASP ILE THR          
SEQRES  21 A  495  GLY ALA LEU PHE LYS HIS SER LYS LYS GLY PRO ARG ALA          
SEQRES  22 A  495  SER GLY ASN LEU ILE PRO GLN GLU LYS ILE VAL ASN LEU          
SEQRES  23 A  495  VAL ASN ASP ILE PHE GLY ALA GLY PHE ASP THR VAL THR          
SEQRES  24 A  495  THR ALA ILE SER TRP SER LEU MET TYR LEU VAL THR LYS          
SEQRES  25 A  495  PRO GLU ILE GLN ARG LYS ILE GLN LYS GLU LEU ASP THR          
SEQRES  26 A  495  VAL ILE GLY ARG GLU ARG ARG PRO ARG LEU SER ASP ARG          
SEQRES  27 A  495  PRO GLN LEU PRO TYR LEU GLU ALA PHE ILE LEU GLU THR          
SEQRES  28 A  495  PHE ARG HIS SER SER PHE LEU PRO PHE THR ILE PRO HIS          
SEQRES  29 A  495  SER THR THR ARG ASP THR THR LEU ASN GLY PHE TYR ILE          
SEQRES  30 A  495  PRO LYS LYS CYS CYS VAL PHE VAL ASN GLN TRP GLN VAL          
SEQRES  31 A  495  ASN HIS ASP PRO GLU LEU TRP GLU ASP PRO SER GLU PHE          
SEQRES  32 A  495  ARG PRO GLU ARG PHE LEU THR ALA ASP GLY THR ALA ILE          
SEQRES  33 A  495  ASN LYS PRO LEU SER GLU LYS MET MET LEU PHE GLY MET          
SEQRES  34 A  495  GLY LYS ARG ARG CYS ILE GLY GLU VAL LEU ALA LYS TRP          
SEQRES  35 A  495  GLU ILE PHE LEU PHE LEU ALA ILE LEU LEU GLN GLN LEU          
SEQRES  36 A  495  GLU PHE SER VAL PRO PRO GLY VAL LYS VAL ASP LEU THR          
SEQRES  37 A  495  PRO ILE TYR GLY LEU THR MET LYS HIS ALA ARG CYS GLU          
SEQRES  38 A  495  HIS VAL GLN ALA ARG ARG PHE SER ILE ASN HIS HIS HIS          
SEQRES  39 A  495  HIS                                                          
HET    HEM  A 900      43                                                       
HET    BHF  A 800      21                                                       
HETNAM     HEM PROTOPORPHYRIN IX CONTAINING FE                                  
HETNAM     BHF 2-PHENYL-4H-BENZO[H]CHROMEN-4-ONE                                
HETSYN     HEM HEME                                                             
HETSYN     BHF 7,8-BENZOFLAVONE; ALPHA-NAPHTHOFLAVONE                           
FORMUL   2  HEM    C34 H32 FE N4 O4                                             
FORMUL   3  BHF    C19 H12 O2                                                   
FORMUL   4  HOH   *160(H2 O)                                                    
HELIX    1   1 HIS A   53  GLY A   58  1                                   6    
HELIX    2   2 ASN A   60  GLY A   73  1                                  14    
HELIX    3   3 ARG A   90  VAL A   99  1                                  10    
HELIX    4   4 GLN A  101  PHE A  105  5                                   5    
HELIX    5   5 LEU A  111  LEU A  116  1                                   6    
HELIX    6   6 GLY A  130  PHE A  147  1                                  18    
HELIX    7   7 CYS A  159  GLY A  182  1                                  24    
HELIX    8   8 ASP A  187  GLY A  206  1                                  20    
HELIX    9   9 GLN A  207  PHE A  209  5                                   3    
HELIX   10  10 SER A  213  LYS A  221  1                                   9    
HELIX   11  11 THR A  223  GLU A  228  1                                   6    
HELIX   12  12 ASN A  234  PHE A  238  5                                   5    
HELIX   13  13 PHE A  239  LEU A  245  5                                   7    
HELIX   14  14 ASN A  247  ASP A  274  1                                  28    
HELIX   15  15 ASP A  282  GLY A  294  1                                  13    
HELIX   16  16 GLN A  304  ASN A  309  1                                   6    
HELIX   17  17 ASN A  309  LYS A  336  1                                  28    
HELIX   18  18 LYS A  336  ILE A  351  1                                  16    
HELIX   19  19 ARG A  358  ARG A  362  5                                   5    
HELIX   20  20 LEU A  365  SER A  380  1                                  16    
HELIX   21  21 ASN A  410  ASP A  417  1                                   8    
HELIX   22  22 ARG A  428  LEU A  433  5                                   6    
HELIX   23  23 ASN A  441  GLU A  446  1                                   6    
HELIX   24  24 MET A  453  ARG A  457  5                                   5    
HELIX   25  25 GLY A  460  LEU A  479  1                                  20    
SHEET    1   A 4 VAL A  75  ILE A  80  0                                        
SHEET    2   A 4 THR A  83  LEU A  88 -1  O  VAL A  87   N  LEU A  76           
SHEET    3   A 4 CYS A 406  VAL A 409  1  O  CYS A 406   N  LEU A  86           
SHEET    4   A 4 HIS A 388  SER A 389 -1  N  HIS A 388   O  VAL A 407           
SHEET    1   B 2 ARG A 296  ALA A 297  0                                        
SHEET    2   B 2 ASN A 300  LEU A 301 -1  O  ASN A 300   N  ALA A 297           
SHEET    1   C 2 THR A 394  LEU A 396  0                                        
SHEET    2   C 2 PHE A 399  ILE A 401 -1  O  ILE A 401   N  THR A 394           
SHEET    1   D 2 GLU A 480  SER A 482  0                                        
SHEET    2   D 2 GLN A 508  ARG A 510 -1  O  GLN A 508   N  SER A 482           
LINK         SG  CYS A 458                FE   HEM A 900     1555   1555  2.35  
SITE     1 AC1 23 ARG A 108  THR A 124  TRP A 133  ARG A 137                    
SITE     2 AC1 23 LEU A 144  ILE A 314  ALA A 317  GLY A 318                    
SITE     3 AC1 23 THR A 321  PHE A 376  PHE A 381  LEU A 382                    
SITE     4 AC1 23 THR A 385  ILE A 386  HIS A 388  GLN A 411                    
SITE     5 AC1 23 LEU A 450  PHE A 451  ARG A 456  CYS A 458                    
SITE     6 AC1 23 ILE A 459  ALA A 464  HOH A 694                               
SITE     1 AC2 10 THR A 118  PHE A 226  PHE A 260  ASP A 313                    
SITE     2 AC2 10 GLY A 316  ALA A 317  ASP A 320  THR A 321                    
SITE     3 AC2 10 LEU A 497  HOH A 733                                          
CRYST1   79.630   80.820  175.820  90.00  90.00  90.00 I 2 2 2       8          
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      0.012558  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.012373  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.005688        0.00000