HEADER    OXIDOREDUCTASE                          08-JUL-97   1AOP              
TITLE     SULFITE REDUCTASE STRUCTURE AT 1.6 ANGSTROM RESOLUTION                
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: SULFITE REDUCTASE HEMOPROTEIN;                             
COMPND   3 CHAIN: A;                                                            
COMPND   4 SYNONYM: SIRHP;                                                      
COMPND   5 EC: 1.8.1.2;                                                         
COMPND   6 ENGINEERED: YES;                                                     
COMPND   7 OTHER_DETAILS: OXIDIZED, SIROHEME FE(III), [4FE-4S], +2              
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI;                               
SOURCE   3 ORGANISM_TAXID: 37762;                                               
SOURCE   4 STRAIN: B;                                                           
SOURCE   5 GENE: CYSIJ;                                                         
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   8 EXPRESSION_SYSTEM_PLASMID: PJYW613;                                  
SOURCE   9 OTHER_DETAILS: PBR322 DERIVATIVE CONTAINING ESCHERICHIA COLI CYSIJ   
SOURCE  10 AND S. TYPHIMURIUM CYSG UNDER CONTROL OF CYSJIH PROMOTER EXPRESSED   
SOURCE  11 IN A S. TYPHIMURIUM CYSI AUXOTROPH                                   
KEYWDS    OXIDOREDUCTASE, SIROHEME, [4FE-4S], SNIRR, SIX-ELECTRON REDUCTION,    
KEYWDS   2 PHOSPHATE COMPLEX                                                    
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    B.R.CRANE,E.D.GETZOFF                                                 
REVDAT   6   27-DEC-23 1AOP    1       COMPND REMARK FORMUL LINK                
REVDAT   5   29-NOV-17 1AOP    1       REMARK HELIX                             
REVDAT   4   13-JUL-11 1AOP    1       VERSN                                    
REVDAT   3   24-MAR-09 1AOP    1       LINK   ATOM   CONECT                     
REVDAT   2   24-FEB-09 1AOP    1       VERSN                                    
REVDAT   1   24-DEC-97 1AOP    0                                                
SPRSDE     24-DEC-97 1AOP      1GEO                                             
JRNL        AUTH   B.R.CRANE,L.M.SIEGEL,E.D.GETZOFF                             
JRNL        TITL   SULFITE REDUCTASE STRUCTURE AT 1.6 A: EVOLUTION AND          
JRNL        TITL 2 CATALYSIS FOR REDUCTION OF INORGANIC ANIONS.                 
JRNL        REF    SCIENCE                       V. 270    59 1995              
JRNL        REFN                   ISSN 0036-8075                               
JRNL        PMID   7569952                                                      
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   B.R.CRANE,L.M.SIEGEL,E.D.GETZOFF                             
REMARK   1  TITL   STRUCTURES OF THE SIROHEME-AND FE4S4-CONTAINING ACTIVE       
REMARK   1  TITL 2 CENTER OF SULFITE REDUCTASE IN DIFFERENT STATES OF           
REMARK   1  TITL 3 OXIDATION: HEME ACTIVATION VIA REDUCTION-GATED EXOGENOUS     
REMARK   1  TITL 4 LIGAND EXCHANGE                                              
REMARK   1  REF    BIOCHEMISTRY                  V.  36 12101 1997              
REMARK   1  REFN                   ISSN 0006-2960                               
REMARK   1 REFERENCE 2                                                          
REMARK   1  AUTH   B.R.CRANE,H.BELLAMY,E.D.GETZOFF                              
REMARK   1  TITL   MULTIWAVELENGTH ANOMALOUS DIFFRACTION OF SULFITE REDUCTASE   
REMARK   1  TITL 2 HEMOPROTEIN: MAKING THE MOST OF MAD DATA                     
REMARK   1  REF    ACTA CRYSTALLOGR.,SECT.D      V.  53     8 1997              
REMARK   1  REFN                   ISSN 0907-4449                               
REMARK   1 REFERENCE 3                                                          
REMARK   1  AUTH   B.R.CRANE,E.D.GETZOFF                                        
REMARK   1  TITL   DETERMINING PHASES AND ANOMALOUS-SCATTERING MODELS FROM THE  
REMARK   1  TITL 2 MULTIWAVELENGTH ANOMALOUS DIFFRACTION OF NATIVE PROTEIN      
REMARK   1  TITL 3 METAL CLUSTERS. IMPROVED MAD PHASE ERROR ESTIMATES AND       
REMARK   1  TITL 4 ANOMALOUS-SCATTERER POSITIONS                                
REMARK   1  REF    ACTA CRYSTALLOGR.,SECT.D      V.  53    23 1997              
REMARK   1  REFN                   ISSN 0907-4449                               
REMARK   1 REFERENCE 4                                                          
REMARK   1  AUTH   J.OSTROWSKI,J.Y.WU,D.C.RUEGER,B.E.MILLER,L.M.SIEGEL,         
REMARK   1  AUTH 2 N.M.KREDICH                                                  
REMARK   1  TITL   CHARACTERIZATION OF THE CYSJIH REGIONS OF SALMONELLA         
REMARK   1  TITL 2 TYPHIMURIUM AND ESCHERICHIA COLI B. DNA SEQUENCES OF CYSI    
REMARK   1  TITL 3 AND CYSH AND A MODEL FOR THE SIROHEME-FE4S4 ACTIVE CENTER OF 
REMARK   1  TITL 4 SULFITE REDUCTASE HEMOPROTEIN BASED ON AMINO ACID HOMOLOGY   
REMARK   1  TITL 5 WITH SPINACH NITRITE REDUCTASE                               
REMARK   1  REF    J.BIOL.CHEM.                  V. 264 15726 1989              
REMARK   1  REFN                   ISSN 0021-9258                               
REMARK   1 REFERENCE 5                                                          
REMARK   1  AUTH   D.E.MCREE,D.C.RICHARDSON,J.S.RICHARDSON,L.M.SIEGEL           
REMARK   1  TITL   THE HEME AND FE4S4 CLUSTER IN THE CRYSTALLOGRAPHIC STRUCTURE 
REMARK   1  TITL 2 OF ESCHERICHIA COLI SULFITE REDUCTASE                        
REMARK   1  REF    J.BIOL.CHEM.                  V. 261 10277 1986              
REMARK   1  REFN                   ISSN 0021-9258                               
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.60 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : X-PLOR                                               
REMARK   3   AUTHORS     : BRUNGER                                              
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.60                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 10.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : NULL                           
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 96.6                           
REMARK   3   NUMBER OF REFLECTIONS             : 61005                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : NULL                            
REMARK   3   FREE R VALUE TEST SET SELECTION  : NULL                            
REMARK   3   R VALUE            (WORKING SET) : 0.182                           
REMARK   3   FREE R VALUE                     : 0.218                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : NULL                            
REMARK   3   FREE R VALUE TEST SET COUNT      : NULL                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : NULL                            
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : NULL                         
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 1.60                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.76                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 93.50                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 7058                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2780                       
REMARK   3   BIN FREE R VALUE                    : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : NULL                         
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : NULL                         
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 3590                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 77                                      
REMARK   3   SOLVENT ATOMS            : 486                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 19.80                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -1.49000                                             
REMARK   3    B22 (A**2) : 3.18000                                              
REMARK   3    B33 (A**2) : -1.69000                                             
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) : NULL                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.14                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : NULL                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : NULL                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : NULL                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.010                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.600                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : NULL                            
REMARK   3   IMPROPER ANGLES        (DEGREES) : NULL                            
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : NULL                                      
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  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  : PARAM19X_PO4_2.SRM                             
REMARK   3  PARAMETER FILE  2  : PARHCSDX_SO3.PRO                               
REMARK   3  PARAMETER FILE  3  : PARAM19X_SO3_2.SRM                             
REMARK   3  PARAMETER FILE  4  : PARHCSDX_2_PO4.PR                              
REMARK   3  PARAMETER FILE  5  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : TOPH19_SO3.FS4                                 
REMARK   3  TOPOLOGY FILE  2   : TOPHCSDX_SO3.PRO                               
REMARK   3  TOPOLOGY FILE  3   : TOPH19_PO4.FS4                                 
REMARK   3  TOPOLOGY FILE  4   : TOPH19_PO4.SR                                  
REMARK   3  TOPOLOGY FILE  5   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1AOP COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL.                                
REMARK 100 THE DEPOSITION ID IS D_1000171070.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 11-FEB-94                          
REMARK 200  TEMPERATURE           (KELVIN) : 277                                
REMARK 200  PH                             : 7.7                                
REMARK 200  NUMBER OF CRYSTALS USED        : 2                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : SSRL                               
REMARK 200  BEAMLINE                       : BL7-1                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.08                               
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : MARRESEARCH                        
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : MOSFLM                             
REMARK 200  DATA SCALING SOFTWARE          : CCP4 (AGROVATA, ROTAVATA           
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 61005                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.600                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 30.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 96.6                               
REMARK 200  DATA REDUNDANCY                : 6.000                              
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : 0.09900                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 28.7000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.60                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.76                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 93.5                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : 0.27800                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 7.500                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: NULL                                           
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MAD/MIR                      
REMARK 200 SOFTWARE USED: X-PLOR                                                
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 40.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.13                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PH 7.7                                   
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21                       
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X+1/2,-Y,Z+1/2                                         
REMARK 290       3555   -X,Y+1/2,-Z+1/2                                         
REMARK 290       4555   X+1/2,-Y+1/2,-Z                                         
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000       34.90000            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       43.90000            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       38.70000            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       43.90000            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       34.90000            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       38.70000            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC                         
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A                                     
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 465                                                                      
REMARK 465 MISSING RESIDUES                                                     
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                       
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                
REMARK 465                                                                      
REMARK 465   M RES C SSSEQI                                                     
REMARK 465     LEU A    74                                                      
REMARK 465     GLU A    75                                                      
REMARK 465     PRO A    76                                                      
REMARK 465     ARG A    77                                                      
REMARK 465     HIS A    78                                                      
REMARK 465     ALA A    79                                                      
REMARK 465     MET A    80                                                      
REMARK 465     LYS A   127                                                      
REMARK 465     LYS A   128                                                      
REMARK 465     ASN A   129                                                      
REMARK 465     VAL A   130                                                      
REMARK 465     LYS A   131                                                      
REMARK 465     ALA A   146                                                      
REMARK 465     THR A   147                                                      
REMARK 465     ALA A   148                                                      
REMARK 465     ARG A   184                                                      
REMARK 465     THR A   185                                                      
REMARK 465     ARG A   186                                                      
REMARK 465     ALA A   187                                                      
REMARK 465     TYR A   188                                                      
REMARK 465     ALA A   189                                                      
REMARK 465     GLU A   190                                                      
REMARK 465     ILE A   191                                                      
REMARK 465     TRP A   192                                                      
REMARK 465     LEU A   193                                                      
REMARK 465     ASP A   194                                                      
REMARK 465     GLN A   195                                                      
REMARK 465     GLU A   196                                                      
REMARK 465     LYS A   197                                                      
REMARK 465     VAL A   198                                                      
REMARK 465     ALA A   199                                                      
REMARK 465     THR A   200                                                      
REMARK 465     THR A   201                                                      
REMARK 465     ASP A   202                                                      
REMARK 465     GLU A   203                                                      
REMARK 465     GLU A   204                                                      
REMARK 465     PRO A   205                                                      
REMARK 465     ILE A   206                                                      
REMARK 465     LEU A   207                                                      
REMARK 465     GLY A   208                                                      
REMARK 465     GLN A   209                                                      
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  86       79.05   -151.83                                   
REMARK 500    MET A 151     -139.39   -145.29                                   
REMARK 500    THR A 158      124.37    -38.08                                   
REMARK 500    ASP A 353     -133.34     69.76                                   
REMARK 500    ALA A 372       -5.02     74.61                                   
REMARK 500    SER A 436     -144.94     54.41                                   
REMARK 500    ALA A 447      -75.33   -128.17                                   
REMARK 500    ASP A 563       79.98   -157.35                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 600                                                                      
REMARK 600 HETEROGEN                                                            
REMARK 600                                                                      
REMARK 600 OXIDIZED, SIROHEME FE(III), [4FE-4S], +2.                            
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                               K A 590   K                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 ILE A 362   O                                                      
REMARK 620 2 ASN A 395   O   138.6                                              
REMARK 620 3 GLN A 396   O    67.4  71.2                                        
REMARK 620 4 ASN A 397   OD1  77.5  87.2  66.6                                  
REMARK 620 5 HOH A 640   O    87.5 120.9 131.9 148.8                            
REMARK 620 6 HOH A 642   O   155.7  56.7 123.0 126.3  69.3                      
REMARK 620 7 HOH A 643   O   141.6  69.3 128.1  79.2  97.3  52.8                
REMARK 620 N                    1     2     3     4     5     6                 
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                             SF4 A 575  FE1                           
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS A 434   SG                                                     
REMARK 620 2 SF4 A 575   S2  109.9                                              
REMARK 620 3 SF4 A 575   S3  108.0 109.5                                        
REMARK 620 4 SF4 A 575   S4  122.7 102.2 103.9                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                             SF4 A 575  FE2                           
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS A 440   SG                                                     
REMARK 620 2 SF4 A 575   S1  104.0                                              
REMARK 620 3 SF4 A 575   S3  123.0 102.2                                        
REMARK 620 4 SF4 A 575   S4  116.2 107.8 102.1                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                             SF4 A 575  FE3                           
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS A 479   SG                                                     
REMARK 620 2 SF4 A 575   S1  104.8                                              
REMARK 620 3 SF4 A 575   S2  116.5 102.1                                        
REMARK 620 4 SF4 A 575   S4  122.9 106.1 102.3                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                             SF4 A 575  FE4                           
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS A 483   SG                                                     
REMARK 620 2 SF4 A 575   S1  122.1                                              
REMARK 620 3 SF4 A 575   S2  101.4 103.8                                        
REMARK 620 4 SF4 A 575   S3  116.0 104.5 107.6                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                             SRM A 580  FE                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS A 483   SG                                                     
REMARK 620 2 SRM A 580   NA   86.1                                              
REMARK 620 3 SRM A 580   NB   86.3  86.8                                        
REMARK 620 4 SRM A 580   NC   77.0 163.0  90.1                                  
REMARK 620 5 SRM A 580   ND   78.0  90.1 164.1  88.3                            
REMARK 620 6 PO4 A 585   O1  173.9  94.8  87.8 101.8 108.0                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: BRG                                                 
REMARK 800 EVIDENCE_CODE: UNKNOWN                                               
REMARK 800 SITE_DESCRIPTION: CYSTEINE THIOLATE IN THE ACTIVE CENTER THAT        
REMARK 800  BRIDGES THE HEME IRON TO THE [4FE-4S] CLUSTER.                      
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: ACT                                                 
REMARK 800 EVIDENCE_CODE: UNKNOWN                                               
REMARK 800 SITE_DESCRIPTION: FOUR ACTIVE SITE RESIDUES THAT CONTACT THE BOUND   
REMARK 800  PHOSPHATE.                                                          
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE PO4 A 585                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE K A 590                   
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SF4 A 575                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SRM A 580                 
DBREF  1AOP A   74   570  UNP    P17846   CYSI_ECOLI      73    569             
SEQRES   1 A  497  LEU GLU PRO ARG HIS ALA MET LEU LEU ARG CYS ARG LEU          
SEQRES   2 A  497  PRO GLY GLY VAL ILE THR THR LYS GLN TRP GLN ALA ILE          
SEQRES   3 A  497  ASP LYS PHE ALA GLY GLU ASN THR ILE TYR GLY SER ILE          
SEQRES   4 A  497  ARG LEU THR ASN ARG GLN THR PHE GLN PHE HIS GLY ILE          
SEQRES   5 A  497  LEU LYS LYS ASN VAL LYS PRO VAL HIS GLN MET LEU HIS          
SEQRES   6 A  497  SER VAL GLY LEU ASP ALA LEU ALA THR ALA ASN ASP MET          
SEQRES   7 A  497  ASN ARG ASN VAL LEU CYS THR SER ASN PRO TYR GLU SER          
SEQRES   8 A  497  GLN LEU HIS ALA GLU ALA TYR GLU TRP ALA LYS LYS ILE          
SEQRES   9 A  497  SER GLU HIS LEU LEU PRO ARG THR ARG ALA TYR ALA GLU          
SEQRES  10 A  497  ILE TRP LEU ASP GLN GLU LYS VAL ALA THR THR ASP GLU          
SEQRES  11 A  497  GLU PRO ILE LEU GLY GLN THR TYR LEU PRO ARG LYS PHE          
SEQRES  12 A  497  LYS THR THR VAL VAL ILE PRO PRO GLN ASN ASP ILE ASP          
SEQRES  13 A  497  LEU HIS ALA ASN ASP MET ASN PHE VAL ALA ILE ALA GLU          
SEQRES  14 A  497  ASN GLY LYS LEU VAL GLY PHE ASN LEU LEU VAL GLY GLY          
SEQRES  15 A  497  GLY LEU SER ILE GLU HIS GLY ASN LYS LYS THR TYR ALA          
SEQRES  16 A  497  ARG THR ALA SER GLU PHE GLY TYR LEU PRO LEU GLU HIS          
SEQRES  17 A  497  THR LEU ALA VAL ALA GLU ALA VAL VAL THR THR GLN ARG          
SEQRES  18 A  497  ASP TRP GLY ASN ARG THR ASP ARG LYS ASN ALA LYS THR          
SEQRES  19 A  497  LYS TYR THR LEU GLU ARG VAL GLY VAL GLU THR PHE LYS          
SEQRES  20 A  497  ALA GLU VAL GLU ARG ARG ALA GLY ILE LYS PHE GLU PRO          
SEQRES  21 A  497  ILE ARG PRO TYR GLU PHE THR GLY ARG GLY ASP ARG ILE          
SEQRES  22 A  497  GLY TRP VAL LYS GLY ILE ASP ASP ASN TRP HIS LEU THR          
SEQRES  23 A  497  LEU PHE ILE GLU ASN GLY ARG ILE LEU ASP TYR PRO ALA          
SEQRES  24 A  497  ARG PRO LEU LYS THR GLY LEU LEU GLU ILE ALA LYS ILE          
SEQRES  25 A  497  HIS LYS GLY ASP PHE ARG ILE THR ALA ASN GLN ASN LEU          
SEQRES  26 A  497  ILE ILE ALA GLY VAL PRO GLU SER GLU LYS ALA LYS ILE          
SEQRES  27 A  497  GLU LYS ILE ALA LYS GLU SER GLY LEU MET ASN ALA VAL          
SEQRES  28 A  497  THR PRO GLN ARG GLU ASN SER MET ALA CYS VAL SER PHE          
SEQRES  29 A  497  PRO THR CYS PRO LEU ALA MET ALA GLU ALA GLU ARG PHE          
SEQRES  30 A  497  LEU PRO SER PHE ILE ASP ASN ILE ASP ASN LEU MET ALA          
SEQRES  31 A  497  LYS HIS GLY VAL SER ASP GLU HIS ILE VAL MET ARG VAL          
SEQRES  32 A  497  THR GLY CYS PRO ASN GLY CYS GLY ARG ALA MET LEU ALA          
SEQRES  33 A  497  GLU VAL GLY LEU VAL GLY LYS ALA PRO GLY ARG TYR ASN          
SEQRES  34 A  497  LEU HIS LEU GLY GLY ASN ARG ILE GLY THR ARG ILE PRO          
SEQRES  35 A  497  ARG MET TYR LYS GLU ASN ILE THR GLU PRO GLU ILE LEU          
SEQRES  36 A  497  ALA SER LEU ASP GLU LEU ILE GLY ARG TRP ALA LYS GLU          
SEQRES  37 A  497  ARG GLU ALA GLY GLU GLY PHE GLY ASP PHE THR VAL ARG          
SEQRES  38 A  497  ALA GLY ILE ILE ARG PRO VAL LEU ASP PRO ALA ARG ASP          
SEQRES  39 A  497  LEU TRP ASP                                                  
HET    PO4  A 585       5                                                       
HET      K  A 590       1                                                       
HET    SF4  A 575       8                                                       
HET    SRM  A 580      63                                                       
HETNAM     PO4 PHOSPHATE ION                                                    
HETNAM       K POTASSIUM ION                                                    
HETNAM     SF4 IRON/SULFUR CLUSTER                                              
HETNAM     SRM SIROHEME                                                         
FORMUL   2  PO4    O4 P 3-                                                      
FORMUL   3    K    K 1+                                                         
FORMUL   4  SF4    FE4 S4                                                       
FORMUL   5  SRM    C42 H44 FE N4 O16                                            
FORMUL   6  HOH   *486(H2 O)                                                    
HELIX    1   1 THR A   93  ASN A  106  1SEE REMARK 650                    14    
HELIX    2   2 PRO A  132  VAL A  140  1SEE REMARK 650                     9    
HELIX    3   3 LEU A  166  PRO A  183  5SEE REMARK 650                    18    
HELIX    4  3T ASP A  229  ASN A  233  5SEE REMARK 650                     5    
HELIX    5   4 HIS A  281  GLY A  297  1SEE REMARK 650                    17    
HELIX    6  5A LYS A  306  GLY A  315  1SEE REMARK 650                    10    
HELIX    7  5B VAL A  316  GLY A  328  1SEE REMARK 650                    13    
HELIX    8  1' LEU A  375  HIS A  386  1SEE REMARK 650                    12    
HELIX    9  2' GLU A  407  SER A  418  1SEE REMARK 650                    12    
HELIX   10   A PRO A  426  ASN A  430  1SEE REMARK 650                     5    
HELIX   11  3' PHE A  450  HIS A  465  1SEE REMARK 650                    16    
HELIX   12 3T' ARG A  485  ALA A  489  5SEE REMARK 650                     5    
HELIX   13  4' GLU A  524  ARG A  542  1SEE REMARK 650                    19    
HELIX   14  5' GLY A  547  GLY A  556  1SEE REMARK 650                    10    
SHEET    1   1 4 LEU A  81  ARG A  85  0                                        
SHEET    2   1 4 THR A 119  LEU A 126 -1  O  PHE A 122   N  LEU A  82           
SHEET    3   1 4 SER A 111  THR A 115 -1  N  ARG A 113   O  GLN A 121           
SHEET    4   1 4 GLY A 365  ILE A 367 -1  N  ILE A 367   O  ILE A 112           
SHEET    1  1' 5 GLY A 347  GLY A 351  0                                        
SHEET    2  1' 5 ASP A 354  PHE A 361 -1  O  THR A 359   N  GLY A 347           
SHEET    3  1' 5 ASN A 397  PRO A 404 -1  N  ILE A 400   O  LEU A 358           
SHEET    4  1' 5 ASP A 389  THR A 393 -1  N  ARG A 391   O  ILE A 399           
SHEET    5  1' 5 GLY A  89  ILE A  91 -1  N  ILE A  91   O  PHE A 390           
SHEET    1   2 5 VAL A 155  THR A 158  0                                        
SHEET    2   2 5 LYS A 215  VAL A 221  1  O  THR A 218   N  LEU A 156           
SHEET    3   2 5 ASP A 234  GLU A 242  1  O  MET A 235   N  THR A 219           
SHEET    4   2 5 LYS A 245  GLY A 254 -1  O  LEU A 252   N  ASN A 236           
SHEET    5   2 5 SER A 272  LEU A 279 -1  O  SER A 272   N  VAL A 253           
SHEET    1   3 5 SER A 431  CYS A 434  0                                        
SHEET    2   3 5 VAL A 473  VAL A 476  1  O  MET A 474   N  MET A 432           
SHEET    3   3 5 GLU A 490  ALA A 497  1  O  VAL A 491   N  ARG A 475           
SHEET    4   3 5 ARG A 500  GLY A 506 -1  O  HIS A 504   N  GLY A 492           
SHEET    5   3 5 ARG A 516  THR A 523 -1  N  TYR A 518   O  LEU A 503           
LINK         O   ILE A 362                 K     K A 590     1555   1555  2.75  
LINK         O   ASN A 395                 K     K A 590     1555   1555  2.90  
LINK         O   GLN A 396                 K     K A 590     1555   1555  3.46  
LINK         OD1 ASN A 397                 K     K A 590     1555   1555  2.71  
LINK         SG  CYS A 434                FE1  SF4 A 575     1555   1555  2.23  
LINK         SG  CYS A 440                FE2  SF4 A 575     1555   1555  2.21  
LINK         SG  CYS A 479                FE3  SF4 A 575     1555   1555  2.23  
LINK         SG  CYS A 483                FE4  SF4 A 575     1555   1555  2.16  
LINK         SG  CYS A 483                FE   SRM A 580     1555   1555  2.84  
LINK        FE   SRM A 580                 O1  PO4 A 585     1555   1555  1.88  
LINK         K     K A 590                 O   HOH A 640     1555   1555  2.91  
LINK         K     K A 590                 O   HOH A 642     1555   1555  2.95  
LINK         K     K A 590                 O   HOH A 643     1555   1555  3.21  
CISPEP   1 PRO A  223    PRO A  224          0         1.56                     
CISPEP   2 PHE A  437    PRO A  438          0         1.07                     
SITE     1 BRG  1 CYS A 483                                                     
SITE     1 ACT  4 ARG A  83  ARG A 153  LYS A 215  LYS A 217                    
SITE     1 AC1  7 ARG A  83  ARG A 117  ARG A 153  LYS A 215                    
SITE     2 AC1  7 LYS A 217  SRM A 580  HOH A 709                               
SITE     1 AC2  6 ILE A 362  ASN A 395  GLN A 396  ASN A 397                    
SITE     2 AC2  6 HOH A 640  HOH A 642                                          
SITE     1 AC3  8 CYS A 434  CYS A 440  ALA A 443  THR A 477                    
SITE     2 AC3  8 CYS A 479  ASN A 481  CYS A 483  SRM A 580                    
SITE     1 AC4 41 ARG A  83  ARG A 113  THR A 115  ASN A 116                    
SITE     2 AC4 41 ARG A 117  THR A 119  GLN A 121  HIS A 123                    
SITE     3 AC4 41 ARG A 214  LYS A 215  LYS A 217  GLY A 256                    
SITE     4 AC4 41 LEU A 257  SER A 258  GLN A 396  ALA A 433                    
SITE     5 AC4 41 CYS A 434  VAL A 435  THR A 439  CYS A 440                    
SITE     6 AC4 41 PRO A 441  ASN A 481  GLY A 482  CYS A 483                    
SITE     7 AC4 41 ARG A 485  SF4 A 575  PO4 A 585  HOH A 607                    
SITE     8 AC4 41 HOH A 694  HOH A 695  HOH A 717  HOH A 743                    
SITE     9 AC4 41 HOH A 771  HOH A 772  HOH A 773  HOH A 774                    
SITE    10 AC4 41 HOH A 827  HOH A 832  HOH A 887  HOH A 901                    
SITE    11 AC4 41 HOH A 966                                                     
CRYST1   69.800   77.400   87.800  90.00  90.00  90.00 P 21 21 21    4          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.014327  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.012920  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.011390        0.00000