HEADER    OXIDOREDUCTASE                          14-MAY-13   4KQ8              
TITLE     STRUCTURE OF RECOMBINANT HUMAN CYTOCHROME P450 AROMATASE              
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: CYTOCHROME P450 19A1;                                      
COMPND   3 CHAIN: A;                                                            
COMPND   4 SYNONYM: AROMATASE, CYPXIX, CYTOCHROME P-450AROM, ESTROGEN SYNTHASE; 
COMPND   5 EC: 1.14.14.1;                                                       
COMPND   6 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: CYP19A1, ARO1, CYAR, CYP19;                                    
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562                                         
KEYWDS    AROMATASE, ANDROGEN, ESTROGEN, CYTOCHROME P450, OXIDOREDUCTASE,       
KEYWDS   2 ESTROGEN SYNTHETASE, CYTOCHROME P450 REDUCTASE                       
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    D.GHOSH,G.DI NARDO,J.GRISWOLD                                         
REVDAT   4   28-FEB-24 4KQ8    1       REMARK SEQADV                            
REVDAT   3   15-NOV-17 4KQ8    1       REMARK                                   
REVDAT   2   11-SEP-13 4KQ8    1       JRNL                                     
REVDAT   1   21-AUG-13 4KQ8    0                                                
JRNL        AUTH   J.LO,G.DI NARDO,J.GRISWOLD,C.EGBUTA,W.JIANG,G.GILARDI,       
JRNL        AUTH 2 D.GHOSH                                                      
JRNL        TITL   STRUCTURAL BASIS FOR THE FUNCTIONAL ROLES OF CRITICAL        
JRNL        TITL 2 RESIDUES IN HUMAN CYTOCHROME P450 AROMATASE.                 
JRNL        REF    BIOCHEMISTRY                  V.  52  5821 2013              
JRNL        REFN                   ISSN 0006-2960                               
JRNL        PMID   23899247                                                     
JRNL        DOI    10.1021/BI400669H                                            
REMARK   2                                                                      
REMARK   2 RESOLUTION.    3.29 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.5.0088                                      
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) : 3.29                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 50.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 97.8                           
REMARK   3   NUMBER OF REFLECTIONS             : 19096                          
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) : 0.217                           
REMARK   3   R VALUE            (WORKING SET) : 0.216                           
REMARK   3   FREE R VALUE                     : 0.248                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.100                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 1036                            
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) : 3.29                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 3.38                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 1447                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 99.60                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2970                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 64                           
REMARK   3   BIN FREE R VALUE                    : 0.3990                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 3658                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 69                                      
REMARK   3   SOLVENT ATOMS            : 2                                       
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 98.80                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 90.47                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 2.13000                                              
REMARK   3    B22 (A**2) : 2.13000                                              
REMARK   3    B33 (A**2) : -3.19000                                             
REMARK   3    B12 (A**2) : 1.06000                                              
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): 0.688         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.370         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.268         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 16.300        
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.923                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.900                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  3815 ; 0.009 ; 0.022       
REMARK   3   BOND LENGTHS OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  5162 ; 1.273 ; 2.015       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   451 ; 5.944 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):   165 ;36.651 ;23.576       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   711 ;20.759 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):    25 ;15.496 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   564 ; 0.090 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  2808 ; 0.004 ; 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):  2251 ; 0.484 ; 1.500       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  3659 ; 0.916 ; 2.000       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):  1564 ; 0.891 ; 3.000       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):  1503 ; 1.623 ; 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  : NULL                                       
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 4KQ8 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 16-MAY-13.                  
REMARK 100 THE DEPOSITION ID IS D_1000079657.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 18-DEC-09                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 7.4                                
REMARK 200  NUMBER OF CRYSTALS USED        : NULL                               
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : APS                                
REMARK 200  BEAMLINE                       : 19-ID                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.979                              
REMARK 200  MONOCHROMATOR                  : SI                                 
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 315                   
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : HKL-3000                           
REMARK 200  DATA SCALING SOFTWARE          : HKL-3000                           
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 19096                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 3.290                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 121.950                            
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 97.8                               
REMARK 200  DATA REDUNDANCY                : 3.600                              
REMARK 200  R MERGE                    (I) : 0.09300                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 16.8000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : NULL                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : NULL                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: FOURIER SYNTHESIS            
REMARK 200 SOFTWARE USED: FOURIER SYNTHESIS                                     
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 79.82                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 6.10                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: CRYSTALLIZED FROM 24%-30% PEG4000, 0.5   
REMARK 280  M NACL, 0.05M TRIS-HCL AND VAPOR DIFFUSED IN SEALED 24-WELL         
REMARK 280  SITTING DROP PLATES. CRYSTALS APPEARED AFTER 1-6 WEEK OF INITIAL    
REMARK 280  SET-UP AND CONTINUED TO GROW FOR AN ADDITIONAL 2 TO 6 WEEKS         
REMARK 280  AFTER FIRST APPEARANCE, PH 7.4, VAPOR DIFFUSION, TEMPERATURE 277K   
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       77.65133            
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       38.82567            
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       38.82567            
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       77.65133            
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    35                                                      
REMARK 465     ALA A    36                                                      
REMARK 465     LYS A    37                                                      
REMARK 465     LYS A    38                                                      
REMARK 465     THR A    39                                                      
REMARK 465     SER A    40                                                      
REMARK 465     SER A    41                                                      
REMARK 465     LYS A    42                                                      
REMARK 465     GLY A    43                                                      
REMARK 465     ARG A    44                                                      
REMARK 465     SER A   497                                                      
REMARK 465     ASP A   498                                                      
REMARK 465     ARG A   499                                                      
REMARK 465     CYS A   500                                                      
REMARK 465     LEU A   501                                                      
REMARK 465     GLU A   502                                                      
REMARK 465     HIS A   503                                                      
REMARK 465     HIS A   504                                                      
REMARK 465     HIS A   505                                                      
REMARK 465     HIS A   506                                                      
REMARK 465     HIS A   507                                                      
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    SER A  46      152.83     72.28                                   
REMARK 500    MET A  54       92.78     51.27                                   
REMARK 500    TYR A  81     -154.35    -86.42                                   
REMARK 500    SER A  90     -145.92     45.92                                   
REMARK 500    SER A 113       47.47    -76.89                                   
REMARK 500    ARG A 115     -166.94   -116.64                                   
REMARK 500    LYS A 130      -65.54   -132.78                                   
REMARK 500    VAL A 178       -7.78   -143.48                                   
REMARK 500    LEU A 204      -43.69   -133.04                                   
REMARK 500    ARG A 205       68.91     34.30                                   
REMARK 500    ILE A 237       86.35    -69.85                                   
REMARK 500    TRP A 239       46.60    -67.13                                   
REMARK 500    LEU A 240      -37.46   -155.44                                   
REMARK 500    THR A 268      -71.46   -107.30                                   
REMARK 500    GLU A 269     -135.42     59.74                                   
REMARK 500    GLU A 270       32.38   -152.67                                   
REMARK 500    LEU A 272      -80.66     63.71                                   
REMARK 500    GLU A 274      -96.19    -84.78                                   
REMARK 500    MET A 276       95.37    -58.95                                   
REMARK 500    GLN A 367       77.70   -118.13                                   
REMARK 500    PHE A 406      -66.32     59.67                                   
REMARK 500    LYS A 409       79.40   -115.07                                   
REMARK 500    ASN A 421      120.67    -29.26                                   
REMARK 500    TYR A 424      -24.98     69.23                                   
REMARK 500    LEU A 463       99.60    -61.96                                   
REMARK 500    GLN A 464      -93.05     46.87                                   
REMARK 500    ASP A 476      115.36   -165.10                                   
REMARK 500    LEU A 477      -70.85     73.20                                   
REMARK 500    MET A 487       33.76     72.84                                   
REMARK 500    PRO A 494      154.75    -47.59                                   
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 601  FE                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS A 437   SG                                                     
REMARK 620 2 HEM A 601   NA  103.1                                              
REMARK 620 3 HEM A 601   NB   93.5  90.4                                        
REMARK 620 4 HEM A 601   NC   93.5 163.3  88.6                                  
REMARK 620 5 HEM A 601   ND   99.6  88.0 166.8  89.2                            
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 601                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ASD A 602                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE PO4 A 603                 
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 3EQM   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 4GL5   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 3S7S   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 3S79   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 4GL7   RELATED DB: PDB                                   
DBREF  4KQ8 A   45   503  UNP    P11511   CP19A_HUMAN     45    503             
SEQADV 4KQ8 MET A   35  UNP  P11511              EXPRESSION TAG                 
SEQADV 4KQ8 ALA A   36  UNP  P11511              EXPRESSION TAG                 
SEQADV 4KQ8 LYS A   37  UNP  P11511              EXPRESSION TAG                 
SEQADV 4KQ8 LYS A   38  UNP  P11511              EXPRESSION TAG                 
SEQADV 4KQ8 THR A   39  UNP  P11511              EXPRESSION TAG                 
SEQADV 4KQ8 SER A   40  UNP  P11511              EXPRESSION TAG                 
SEQADV 4KQ8 SER A   41  UNP  P11511              EXPRESSION TAG                 
SEQADV 4KQ8 LYS A   42  UNP  P11511              EXPRESSION TAG                 
SEQADV 4KQ8 GLY A   43  UNP  P11511              EXPRESSION TAG                 
SEQADV 4KQ8 ARG A   44  UNP  P11511              EXPRESSION TAG                 
SEQADV 4KQ8 HIS A  504  UNP  P11511              EXPRESSION TAG                 
SEQADV 4KQ8 HIS A  505  UNP  P11511              EXPRESSION TAG                 
SEQADV 4KQ8 HIS A  506  UNP  P11511              EXPRESSION TAG                 
SEQADV 4KQ8 HIS A  507  UNP  P11511              EXPRESSION TAG                 
SEQRES   1 A  473  MET ALA LYS LYS THR SER SER LYS GLY ARG SER SER ILE          
SEQRES   2 A  473  PRO GLY PRO GLY TYR CYS MET GLY ILE GLY PRO LEU ILE          
SEQRES   3 A  473  SER HIS GLY ARG PHE LEU TRP MET GLY ILE GLY SER ALA          
SEQRES   4 A  473  CYS ASN TYR TYR ASN ARG VAL TYR GLY GLU PHE MET ARG          
SEQRES   5 A  473  VAL TRP ILE SER GLY GLU GLU THR LEU ILE ILE SER LYS          
SEQRES   6 A  473  SER SER SER MET PHE HIS ILE MET LYS HIS ASN HIS TYR          
SEQRES   7 A  473  SER SER ARG PHE GLY SER LYS LEU GLY LEU GLN CYS ILE          
SEQRES   8 A  473  GLY MET HIS GLU LYS GLY ILE ILE PHE ASN ASN ASN PRO          
SEQRES   9 A  473  GLU LEU TRP LYS THR THR ARG PRO PHE PHE MET LYS ALA          
SEQRES  10 A  473  LEU SER GLY PRO GLY LEU VAL ARG MET VAL THR VAL CYS          
SEQRES  11 A  473  ALA GLU SER LEU LYS THR HIS LEU ASP ARG LEU GLU GLU          
SEQRES  12 A  473  VAL THR ASN GLU SER GLY TYR VAL ASP VAL LEU THR LEU          
SEQRES  13 A  473  LEU ARG ARG VAL MET LEU ASP THR SER ASN THR LEU PHE          
SEQRES  14 A  473  LEU ARG ILE PRO LEU ASP GLU SER ALA ILE VAL VAL LYS          
SEQRES  15 A  473  ILE GLN GLY TYR PHE ASP ALA TRP GLN ALA LEU LEU ILE          
SEQRES  16 A  473  LYS PRO ASP ILE PHE PHE LYS ILE SER TRP LEU TYR LYS          
SEQRES  17 A  473  LYS TYR GLU LYS SER VAL LYS ASP LEU LYS ASP ALA ILE          
SEQRES  18 A  473  GLU VAL LEU ILE ALA GLU LYS ARG ARG ARG ILE SER THR          
SEQRES  19 A  473  GLU GLU LYS LEU GLU GLU CYS MET ASP PHE ALA THR GLU          
SEQRES  20 A  473  LEU ILE LEU ALA GLU LYS ARG GLY ASP LEU THR ARG GLU          
SEQRES  21 A  473  ASN VAL ASN GLN CYS ILE LEU GLU MET LEU ILE ALA ALA          
SEQRES  22 A  473  PRO ASP THR MET SER VAL SER LEU PHE PHE MET LEU PHE          
SEQRES  23 A  473  LEU ILE ALA LYS HIS PRO ASN VAL GLU GLU ALA ILE ILE          
SEQRES  24 A  473  LYS GLU ILE GLN THR VAL ILE GLY GLU ARG ASP ILE LYS          
SEQRES  25 A  473  ILE ASP ASP ILE GLN LYS LEU LYS VAL MET GLU ASN PHE          
SEQRES  26 A  473  ILE TYR GLU SER MET ARG TYR GLN PRO VAL VAL ASP LEU          
SEQRES  27 A  473  VAL MET ARG LYS ALA LEU GLU ASP ASP VAL ILE ASP GLY          
SEQRES  28 A  473  TYR PRO VAL LYS LYS GLY THR ASN ILE ILE LEU ASN ILE          
SEQRES  29 A  473  GLY ARG MET HIS ARG LEU GLU PHE PHE PRO LYS PRO ASN          
SEQRES  30 A  473  GLU PHE THR LEU GLU ASN PHE ALA LYS ASN VAL PRO TYR          
SEQRES  31 A  473  ARG TYR PHE GLN PRO PHE GLY PHE GLY PRO ARG GLY CYS          
SEQRES  32 A  473  ALA GLY LYS TYR ILE ALA MET VAL MET MET LYS ALA ILE          
SEQRES  33 A  473  LEU VAL THR LEU LEU ARG ARG PHE HIS VAL LYS THR LEU          
SEQRES  34 A  473  GLN GLY GLN CYS VAL GLU SER ILE GLN LYS ILE HIS ASP          
SEQRES  35 A  473  LEU SER LEU HIS PRO ASP GLU THR LYS ASN MET LEU GLU          
SEQRES  36 A  473  MET ILE PHE THR PRO ARG ASN SER ASP ARG CYS LEU GLU          
SEQRES  37 A  473  HIS HIS HIS HIS HIS                                          
HET    HEM  A 601      43                                                       
HET    ASD  A 602      21                                                       
HET    PO4  A 603       5                                                       
HETNAM     HEM PROTOPORPHYRIN IX CONTAINING FE                                  
HETNAM     ASD 4-ANDROSTENE-3-17-DIONE                                          
HETNAM     PO4 PHOSPHATE ION                                                    
HETSYN     HEM HEME                                                             
FORMUL   2  HEM    C34 H32 FE N4 O4                                             
FORMUL   3  ASD    C19 H26 O2                                                   
FORMUL   4  PO4    O4 P 3-                                                      
FORMUL   5  HOH   *2(H2 O)                                                      
HELIX    1   1 ILE A   56  GLY A   69  1                                  14    
HELIX    2   2 GLY A   69  TYR A   81  1                                  13    
HELIX    3   3 LYS A   99  HIS A  109  1                                  11    
HELIX    4   4 ASN A  110  SER A  113  5                                   4    
HELIX    5   5 SER A  118  GLY A  126  1                                   9    
HELIX    6   6 ASN A  137  LEU A  152  1                                  16    
HELIX    7   7 GLY A  154  ASP A  173  1                                  20    
HELIX    8   8 ARG A  174  VAL A  178  5                                   5    
HELIX    9   9 ASP A  186  LEU A  204  1                                  19    
HELIX   10  10 ASP A  209  LEU A  228  1                                  20    
HELIX   11  11 ILE A  229  LYS A  230  5                                   2    
HELIX   12  12 PRO A  231  LYS A  236  5                                   6    
HELIX   13  13 ILE A  237  GLU A  269  1                                  33    
HELIX   14  14 ASP A  277  ARG A  288  1                                  12    
HELIX   15  15 THR A  292  LYS A  324  1                                  33    
HELIX   16  16 HIS A  325  ILE A  340  1                                  16    
HELIX   17  17 LYS A  346  ILE A  350  5                                   5    
HELIX   18  18 LEU A  353  GLN A  367  1                                  15    
HELIX   19  19 ASN A  397  GLU A  405  1                                   9    
HELIX   20  20 THR A  414  ALA A  419  5                                   6    
HELIX   21  21 PHE A  432  GLY A  436  5                                   5    
HELIX   22  22 GLY A  439  ARG A  457  1                                  19    
SHEET    1   A 4 PHE A  84  TRP A  88  0                                        
SHEET    2   A 4 GLU A  93  ILE A  97 -1  O  ILE A  96   N  MET A  85           
SHEET    3   A 4 ASN A 393  LEU A 396  1  O  ILE A 395   N  LEU A  95           
SHEET    4   A 4 VAL A 373  LYS A 376 -1  N  VAL A 373   O  LEU A 396           
SHEET    1   B 2 ASP A 381  VAL A 382  0                                        
SHEET    2   B 2 PRO A 387  VAL A 388 -1  O  VAL A 388   N  ASP A 381           
SHEET    1   C 2 PHE A 458  THR A 462  0                                        
SHEET    2   C 2 MET A 490  PRO A 494 -1  O  THR A 493   N  HIS A 459           
SHEET    1   D 2 LYS A 473  HIS A 475  0                                        
SHEET    2   D 2 LEU A 479  PRO A 481 -1  O  HIS A 480   N  ILE A 474           
LINK         SG  CYS A 437                FE   HEM A 601     1555   1555  2.39  
SITE     1 AC1 19 ARG A 115  ILE A 132  TRP A 141  ARG A 145                    
SITE     2 AC1 19 LEU A 152  ALA A 306  MET A 311  MET A 364                    
SITE     3 AC1 19 VAL A 373  ARG A 375  PRO A 429  PHE A 430                    
SITE     4 AC1 19 GLY A 431  ARG A 435  GLY A 436  CYS A 437                    
SITE     5 AC1 19 MET A 446  MET A 447  ASD A 602                               
SITE     1 AC2 11 ARG A 115  ILE A 133  TRP A 224  ALA A 306                    
SITE     2 AC2 11 ASP A 309  THR A 310  VAL A 370  LEU A 372                    
SITE     3 AC2 11 MET A 374  LEU A 477  HEM A 601                               
SITE     1 AC3  4 HIS A 109  ASN A 110  HIS A 111  HOH A 702                    
CRYST1  140.821  140.821  116.477  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      0.007101  0.004100  0.000000        0.00000                         
SCALE2      0.000000  0.008200  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.008585        0.00000