HEADER    OXIDOREDUCTASE                          30-MAY-03   1PIU              
TITLE     OXIDIZED RIBONUCLEOTIDE REDUCTASE R2-D84E MUTANT CONTAINING OXO-      
TITLE    2 BRIDGED DIFERRIC CLUSTER                                             
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: RIBONUCLEOSIDE-DIPHOSPHATE REDUCTASE 1 BETA CHAIN;         
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 SYNONYM: RIBONUCLEOTIDE REDUCTASE 1, B2 PROTEIN, R2 PROTEIN;         
COMPND   5 EC: 1.17.4.1;                                                        
COMPND   6 ENGINEERED: YES;                                                     
COMPND   7 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI;                               
SOURCE   3 ORGANISM_TAXID: 562;                                                 
SOURCE   4 GENE: RIR2;                                                          
SOURCE   5 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   6 EXPRESSION_SYSTEM_TAXID: 562                                         
KEYWDS    FOUR-HELIX BUNDLE, OXO-BRIDGED DIFERRIC CLUSTER, OXIDOREDUCTASE       
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    W.C.VOEGTLI,N.KHIDEKEL,J.BALDWIN,B.A.LEY,J.M.BOLLINGER JR.,           
AUTHOR   2 A.C.ROSENZWEIG                                                       
REVDAT   5   03-APR-24 1PIU    1       REMARK                                   
REVDAT   4   14-FEB-24 1PIU    1       REMARK                                   
REVDAT   3   27-OCT-21 1PIU    1       REMARK SEQADV LINK                       
REVDAT   2   24-FEB-09 1PIU    1       VERSN                                    
REVDAT   1   17-JUN-03 1PIU    0                                                
JRNL        AUTH   W.C.VOEGTLI,N.KHIDEKEL,J.BALDWIN,B.A.LEY,J.M.BOLLINGER JR.,  
JRNL        AUTH 2 A.C.ROSENZWEIG                                               
JRNL        TITL   CRYSTAL STRUCTURE OF THE RIBONUCLEOTIDE REDUCTASE R2 MUTANT  
JRNL        TITL 2 THAT ACCUMULATES A U-1,2-PEROXODIIRON(III) INTERMEDIATE      
JRNL        TITL 3 DURING OXYGEN ACTIVATION                                     
JRNL        REF    J.AM.CHEM.SOC.                V. 122  3255 2000              
JRNL        REFN                   ISSN 0002-7863                               
JRNL        DOI    10.1021/JA991839L                                            
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.20 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS 1.0                                              
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) : 2.20                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 20.75                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 2147208.760                    
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : 0.0000                         
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 98.9                           
REMARK   3   NUMBER OF REFLECTIONS             : 36848                          
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) : 0.191                           
REMARK   3   FREE R VALUE                     : 0.232                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 1845                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : 0.005                           
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) : 2.20                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.34                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 99.20                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 5771                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.1900                       
REMARK   3   BIN FREE R VALUE                    : 0.2450                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 5.00                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 305                          
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.014                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 5568                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 16                                      
REMARK   3   SOLVENT ATOMS            : 257                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 16.00                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 26.00                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -4.95000                                             
REMARK   3    B22 (A**2) : 2.03000                                              
REMARK   3    B33 (A**2) : 2.92000                                              
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) : 0.22                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.08                            
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) : 0.27                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.17                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.006                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.100                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 18.90                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 0.760                           
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) : 1.710 ; 1.500                
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : 2.510 ; 2.000                
REMARK   3   SIDE-CHAIN BOND              (A**2) : 3.030 ; 2.000                
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : 4.290 ; 2.500                
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : FLAT MODEL                                           
REMARK   3   KSOL        : 0.40                                                 
REMARK   3   BSOL        : 62.10                                                
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  : TOPPER_ION.PARAM                               
REMARK   3  PARAMETER FILE  4  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : PROTEIN.TOP                                    
REMARK   3  TOPOLOGY FILE  2   : WATER.TOP                                      
REMARK   3  TOPOLOGY FILE  3   : TOPPER_ION.TOP                                 
REMARK   3  TOPOLOGY FILE  4   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: IRON ATOMS REFINED AS FE(III) IONS        
REMARK   4                                                                      
REMARK   4 1PIU COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 03-JUN-03.                  
REMARK 100 THE DEPOSITION ID IS D_1000019342.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 15-JUL-98                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 6.0                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
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                  : SSRL BEAMLINE 7-1                  
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : MARRESEARCH                        
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 36848                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.200                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 25.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 98.8                               
REMARK 200  DATA REDUNDANCY                : NULL                               
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : NULL                               
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.20                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.34                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 99.2                               
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: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: X-PLOR                                                
REMARK 200 STARTING MODEL: OXIDIZED WILDTYPE RIBONUCLEOTIDE REDUCTASE R2        
REMARK 200  WITHOUT METAL IONS OR SOLVENT MOLECULES                             
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 40.60                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.07                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 20% PEG 4000, 200MM NACL, 50MM MES,      
REMARK 280  0.3% DIOXANE, PH 6.0, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE    
REMARK 280  310K                                                                
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       37.05000            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       57.40000            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       42.30000            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       57.40000            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       37.05000            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       42.30000            
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 300 REMARK: TETRAMER OF TWO ALPHA AND TWO BETA SUBUNITS                  
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: DIMERIC                           
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 7960 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 24110 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -320.0 KCAL/MOL                       
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B                                  
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     SER A   341                                                      
REMARK 465     ASP A   342                                                      
REMARK 465     ASN A   343                                                      
REMARK 465     VAL A   344                                                      
REMARK 465     GLN A   345                                                      
REMARK 465     VAL A   346                                                      
REMARK 465     ALA A   347                                                      
REMARK 465     PRO A   348                                                      
REMARK 465     GLN A   349                                                      
REMARK 465     GLU A   350                                                      
REMARK 465     VAL A   351                                                      
REMARK 465     GLU A   352                                                      
REMARK 465     VAL A   353                                                      
REMARK 465     SER A   354                                                      
REMARK 465     SER A   355                                                      
REMARK 465     TYR A   356                                                      
REMARK 465     LEU A   357                                                      
REMARK 465     VAL A   358                                                      
REMARK 465     GLY A   359                                                      
REMARK 465     GLN A   360                                                      
REMARK 465     ILE A   361                                                      
REMARK 465     ASP A   362                                                      
REMARK 465     SER A   363                                                      
REMARK 465     GLU A   364                                                      
REMARK 465     VAL A   365                                                      
REMARK 465     ASP A   366                                                      
REMARK 465     THR A   367                                                      
REMARK 465     ASP A   368                                                      
REMARK 465     ASP A   369                                                      
REMARK 465     LEU A   370                                                      
REMARK 465     SER A   371                                                      
REMARK 465     ASN A   372                                                      
REMARK 465     PHE A   373                                                      
REMARK 465     GLN A   374                                                      
REMARK 465     LEU A   375                                                      
REMARK 465     SER B   341                                                      
REMARK 465     ASP B   342                                                      
REMARK 465     ASN B   343                                                      
REMARK 465     VAL B   344                                                      
REMARK 465     GLN B   345                                                      
REMARK 465     VAL B   346                                                      
REMARK 465     ALA B   347                                                      
REMARK 465     PRO B   348                                                      
REMARK 465     GLN B   349                                                      
REMARK 465     GLU B   350                                                      
REMARK 465     VAL B   351                                                      
REMARK 465     GLU B   352                                                      
REMARK 465     VAL B   353                                                      
REMARK 465     SER B   354                                                      
REMARK 465     SER B   355                                                      
REMARK 465     TYR B   356                                                      
REMARK 465     LEU B   357                                                      
REMARK 465     VAL B   358                                                      
REMARK 465     GLY B   359                                                      
REMARK 465     GLN B   360                                                      
REMARK 465     ILE B   361                                                      
REMARK 465     ASP B   362                                                      
REMARK 465     SER B   363                                                      
REMARK 465     GLU B   364                                                      
REMARK 465     VAL B   365                                                      
REMARK 465     ASP B   366                                                      
REMARK 465     THR B   367                                                      
REMARK 465     ASP B   368                                                      
REMARK 465     ASP B   369                                                      
REMARK 465     LEU B   370                                                      
REMARK 465     SER B   371                                                      
REMARK 465     ASN B   372                                                      
REMARK 465     PHE B   373                                                      
REMARK 465     GLN B   374                                                      
REMARK 465     LEU B   375                                                      
REMARK 470                                                                      
REMARK 470 MISSING ATOM                                                         
REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER;           
REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER;          
REMARK 470 I=INSERTION CODE):                                                   
REMARK 470   M RES CSSEQI  ATOMS                                                
REMARK 470     GLN A   7    CG   CD   OE1  NE2                                  
REMARK 470     GLN B   7    CG   CD   OE1  NE2                                  
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT                     
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT.                            
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI           DISTANCE          
REMARK 500   O    SER B     6     OD1  ASN B    24              2.15            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS                                      
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,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3)               
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   RES CSSEQI ATM2   DEVIATION                     
REMARK 500    CYS B 196   CB    CYS B 196   SG      0.135                       
REMARK 500    CYS B 214   CB    CYS B 214   SG      0.121                       
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND ANGLES                                       
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1)              
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   ATM2   ATM3                                     
REMARK 500    CYS B 214   CA  -  CB  -  SG  ANGL. DEV. =   7.3 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    PHE A   5       92.97   -166.73                                   
REMARK 500    ASN A  24      -89.59    -95.60                                   
REMARK 500    THR A 142     -146.39    -77.59                                   
REMARK 500    ASN A 143       93.06     59.45                                   
REMARK 500    ILE A 206      -61.07   -120.99                                   
REMARK 500    ASP A 257     -129.62   -104.76                                   
REMARK 500    PHE B   5       89.96   -164.18                                   
REMARK 500    ASN B  24      -92.82    -92.57                                   
REMARK 500    ASP B 132       54.75   -158.51                                   
REMARK 500    GLN B 147       58.07    -66.24                                   
REMARK 500    LYS B 148      -48.12   -133.54                                   
REMARK 500    SER B 295     -163.07   -102.44                                   
REMARK 500    LEU B 339     -115.71   -107.39                                   
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                              FE A 401  FE                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLU A  84   OE1                                                    
REMARK 620 2 GLU A 115   OE1  85.3                                              
REMARK 620 3 HIS A 118   ND1 113.0  84.8                                        
REMARK 620 4   O A 602   O   153.3  96.7  93.7                                  
REMARK 620 5 HOH A 676   O   106.8 163.8  99.8  67.6                            
REMARK 620 N                    1     2     3     4                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              FE A 402  FE                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLU A 115   OE2                                                    
REMARK 620 2 GLU A 204   OE2  87.9                                              
REMARK 620 3 GLU A 238   OE2 171.9  85.9                                        
REMARK 620 4 HIS A 241   ND1  93.4  97.2  92.5                                  
REMARK 620 5   O A 602   O   101.1 166.4  84.2  92.4                            
REMARK 620 6 HOH A 677   O    81.4  94.2  94.0 167.2  77.3                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              HG A 501  HG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 TYR A 194   OH                                                     
REMARK 620 2 ALA A 265   O    83.4                                              
REMARK 620 3 CYS A 272   SG   94.6 104.7                                        
REMARK 620 N                    1     2                                         
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              HG A 502  HG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS A 196   O                                                      
REMARK 620 2 CYS A 196   SG   72.2                                              
REMARK 620 N                    1                                               
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              HG A 503  HG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 VAL A 210   O                                                      
REMARK 620 2 CYS A 214   SG   93.1                                              
REMARK 620 3 CYS A 214   N    63.9  72.5                                        
REMARK 620 N                    1     2                                         
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              HG A 509  HG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 ILE A 264   O                                                      
REMARK 620 2 CYS A 268   N    52.7                                              
REMARK 620 3 CYS A 268   SG   63.4  63.2                                        
REMARK 620 4 HOH A 656   O   140.2 102.7  77.8                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              HG A 507  HG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 LYS A 284   NZ                                                     
REMARK 620 2 GLU A 309   OE2  60.1                                              
REMARK 620 3 HOH A 672   O   133.6 154.2                                        
REMARK 620 N                    1     2                                         
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              FE B 403  FE                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLU B  84   OE1                                                    
REMARK 620 2 GLU B  84   OE2  53.4                                              
REMARK 620 3 GLU B 115   OE1  85.9 133.1                                        
REMARK 620 4 HIS B 118   ND1 106.0  82.3  89.0                                  
REMARK 620 5   O B 601   O   157.9 129.6  97.0  96.0                            
REMARK 620 6 HOH B 661   O   101.4  61.2 163.0 103.5  70.5                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              FE B 404  FE                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLU B 115   OE2                                                    
REMARK 620 2 GLU B 204   OE2  83.6                                              
REMARK 620 3 GLU B 238   OE1 170.3  88.5                                        
REMARK 620 4 HIS B 241   ND1  87.7  93.9  87.3                                  
REMARK 620 5   O B 601   O   110.6 164.9  77.8  92.0                            
REMARK 620 6 HOH B 662   O    88.0  97.2  98.5 167.6  78.7                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              HG B 504  HG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS B 196   SG                                                     
REMARK 620 2 CYS B 196   O    68.8                                              
REMARK 620 N                    1                                               
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              HG B 506  HG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 VAL B 210   O                                                      
REMARK 620 2 CYS B 214   SG   81.2                                              
REMARK 620 3 CYS B 214   N    63.0  75.3                                        
REMARK 620 N                    1     2                                         
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              HG B 505  HG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS B 268   SG                                                     
REMARK 620 2 CYS B 268   O    86.0                                              
REMARK 620 3 CYS B 272   SG  173.7  96.9                                        
REMARK 620 N                    1     2                                         
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              HG B 508  HG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS B 272   O                                                      
REMARK 620 2 CYS B 272   SG   99.9                                              
REMARK 620 N                    1                                               
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              HG B 510  HG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS B 305   O                                                      
REMARK 620 2 GLU B 309   OE2  83.6                                              
REMARK 620 3 HOH B 602   O    65.3  46.8                                        
REMARK 620 N                    1     2                                         
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE FE A 401                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE FE A 402                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE FE B 403                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE FE B 404                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HG A 501                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC6                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HG A 502                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC7                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HG A 503                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC8                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HG B 504                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC9                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HG B 505                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: BC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HG B 506                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: BC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HG A 507                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: BC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HG B 508                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: BC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HG A 509                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: BC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HG B 510                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: BC6                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE O B 601                   
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: BC7                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE O A 602                   
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1PIM   RELATED DB: PDB                                   
REMARK 900 DITHIONITE REDUCED RIBONUCLEOTIDE REDUCTASE R2-D84E CONTAINING       
REMARK 900 DIFERROUS CLUSTER                                                    
REMARK 999                                                                      
REMARK 999 SEQRES AUTHOR STATES THE CONFLICT WITH RESIDUE 326 IS NOT A AN       
REMARK 999 ENGINEERED MUTATION, BUT POSSIBLY A MODELLING ERROR IN THE           
REMARK 999 MOLECULAR SEARCH OBJECT, WHICH WAS NOT CHANGED IN THE FINAL          
REMARK 999 MODEL.'                                                              
DBREF  1PIU A    1   375  UNP    P69924   RIR2_ECOLI       1    375             
DBREF  1PIU B    1   375  UNP    P69924   RIR2_ECOLI       1    375             
SEQADV 1PIU GLU A   84  UNP  P69924    ASP    84 ENGINEERED MUTATION            
SEQADV 1PIU ASN A  326  UNP  P69924    GLN   326 SEE REMARK 999                 
SEQADV 1PIU GLU B   84  UNP  P69924    ASP    84 ENGINEERED MUTATION            
SEQADV 1PIU ASN B  326  UNP  P69924    GLN   326 SEE REMARK 999                 
SEQRES   1 A  375  ALA TYR THR THR PHE SER GLN THR LYS ASN ASP GLN LEU          
SEQRES   2 A  375  LYS GLU PRO MET PHE PHE GLY GLN PRO VAL ASN VAL ALA          
SEQRES   3 A  375  ARG TYR ASP GLN GLN LYS TYR ASP ILE PHE GLU LYS LEU          
SEQRES   4 A  375  ILE GLU LYS GLN LEU SER PHE PHE TRP ARG PRO GLU GLU          
SEQRES   5 A  375  VAL ASP VAL SER ARG ASP ARG ILE ASP TYR GLN ALA LEU          
SEQRES   6 A  375  PRO GLU HIS GLU LYS HIS ILE PHE ILE SER ASN LEU LYS          
SEQRES   7 A  375  TYR GLN THR LEU LEU GLU SER ILE GLN GLY ARG SER PRO          
SEQRES   8 A  375  ASN VAL ALA LEU LEU PRO LEU ILE SER ILE PRO GLU LEU          
SEQRES   9 A  375  GLU THR TRP VAL GLU THR TRP ALA PHE SER GLU THR ILE          
SEQRES  10 A  375  HIS SER ARG SER TYR THR HIS ILE ILE ARG ASN ILE VAL          
SEQRES  11 A  375  ASN ASP PRO SER VAL VAL PHE ASP ASP ILE VAL THR ASN          
SEQRES  12 A  375  GLU GLN ILE GLN LYS ARG ALA GLU GLY ILE SER SER TYR          
SEQRES  13 A  375  TYR ASP GLU LEU ILE GLU MET THR SER TYR TRP HIS LEU          
SEQRES  14 A  375  LEU GLY GLU GLY THR HIS THR VAL ASN GLY LYS THR VAL          
SEQRES  15 A  375  THR VAL SER LEU ARG GLU LEU LYS LYS LYS LEU TYR LEU          
SEQRES  16 A  375  CYS LEU MET SER VAL ASN ALA LEU GLU ALA ILE ARG PHE          
SEQRES  17 A  375  TYR VAL SER PHE ALA CYS SER PHE ALA PHE ALA GLU ARG          
SEQRES  18 A  375  GLU LEU MET GLU GLY ASN ALA LYS ILE ILE ARG LEU ILE          
SEQRES  19 A  375  ALA ARG ASP GLU ALA LEU HIS LEU THR GLY THR GLN HIS          
SEQRES  20 A  375  MET LEU ASN LEU LEU ARG SER GLY ALA ASP ASP PRO GLU          
SEQRES  21 A  375  MET ALA GLU ILE ALA GLU GLU CYS LYS GLN GLU CYS TYR          
SEQRES  22 A  375  ASP LEU PHE VAL GLN ALA ALA GLN GLN GLU LYS ASP TRP          
SEQRES  23 A  375  ALA ASP TYR LEU PHE ARG ASP GLY SER MET ILE GLY LEU          
SEQRES  24 A  375  ASN LYS ASP ILE LEU CYS GLN TYR VAL GLU TYR ILE THR          
SEQRES  25 A  375  ASN ILE ARG MET GLN ALA VAL GLY LEU ASP LEU PRO PHE          
SEQRES  26 A  375  ASN THR ARG SER ASN PRO ILE PRO TRP ILE ASN THR TRP          
SEQRES  27 A  375  LEU VAL SER ASP ASN VAL GLN VAL ALA PRO GLN GLU VAL          
SEQRES  28 A  375  GLU VAL SER SER TYR LEU VAL GLY GLN ILE ASP SER GLU          
SEQRES  29 A  375  VAL ASP THR ASP ASP LEU SER ASN PHE GLN LEU                  
SEQRES   1 B  375  ALA TYR THR THR PHE SER GLN THR LYS ASN ASP GLN LEU          
SEQRES   2 B  375  LYS GLU PRO MET PHE PHE GLY GLN PRO VAL ASN VAL ALA          
SEQRES   3 B  375  ARG TYR ASP GLN GLN LYS TYR ASP ILE PHE GLU LYS LEU          
SEQRES   4 B  375  ILE GLU LYS GLN LEU SER PHE PHE TRP ARG PRO GLU GLU          
SEQRES   5 B  375  VAL ASP VAL SER ARG ASP ARG ILE ASP TYR GLN ALA LEU          
SEQRES   6 B  375  PRO GLU HIS GLU LYS HIS ILE PHE ILE SER ASN LEU LYS          
SEQRES   7 B  375  TYR GLN THR LEU LEU GLU SER ILE GLN GLY ARG SER PRO          
SEQRES   8 B  375  ASN VAL ALA LEU LEU PRO LEU ILE SER ILE PRO GLU LEU          
SEQRES   9 B  375  GLU THR TRP VAL GLU THR TRP ALA PHE SER GLU THR ILE          
SEQRES  10 B  375  HIS SER ARG SER TYR THR HIS ILE ILE ARG ASN ILE VAL          
SEQRES  11 B  375  ASN ASP PRO SER VAL VAL PHE ASP ASP ILE VAL THR ASN          
SEQRES  12 B  375  GLU GLN ILE GLN LYS ARG ALA GLU GLY ILE SER SER TYR          
SEQRES  13 B  375  TYR ASP GLU LEU ILE GLU MET THR SER TYR TRP HIS LEU          
SEQRES  14 B  375  LEU GLY GLU GLY THR HIS THR VAL ASN GLY LYS THR VAL          
SEQRES  15 B  375  THR VAL SER LEU ARG GLU LEU LYS LYS LYS LEU TYR LEU          
SEQRES  16 B  375  CYS LEU MET SER VAL ASN ALA LEU GLU ALA ILE ARG PHE          
SEQRES  17 B  375  TYR VAL SER PHE ALA CYS SER PHE ALA PHE ALA GLU ARG          
SEQRES  18 B  375  GLU LEU MET GLU GLY ASN ALA LYS ILE ILE ARG LEU ILE          
SEQRES  19 B  375  ALA ARG ASP GLU ALA LEU HIS LEU THR GLY THR GLN HIS          
SEQRES  20 B  375  MET LEU ASN LEU LEU ARG SER GLY ALA ASP ASP PRO GLU          
SEQRES  21 B  375  MET ALA GLU ILE ALA GLU GLU CYS LYS GLN GLU CYS TYR          
SEQRES  22 B  375  ASP LEU PHE VAL GLN ALA ALA GLN GLN GLU LYS ASP TRP          
SEQRES  23 B  375  ALA ASP TYR LEU PHE ARG ASP GLY SER MET ILE GLY LEU          
SEQRES  24 B  375  ASN LYS ASP ILE LEU CYS GLN TYR VAL GLU TYR ILE THR          
SEQRES  25 B  375  ASN ILE ARG MET GLN ALA VAL GLY LEU ASP LEU PRO PHE          
SEQRES  26 B  375  ASN THR ARG SER ASN PRO ILE PRO TRP ILE ASN THR TRP          
SEQRES  27 B  375  LEU VAL SER ASP ASN VAL GLN VAL ALA PRO GLN GLU VAL          
SEQRES  28 B  375  GLU VAL SER SER TYR LEU VAL GLY GLN ILE ASP SER GLU          
SEQRES  29 B  375  VAL ASP THR ASP ASP LEU SER ASN PHE GLN LEU                  
HET     FE  A 401       1                                                       
HET     FE  A 402       1                                                       
HET     HG  A 501       1                                                       
HET     HG  A 502       1                                                       
HET     HG  A 503       1                                                       
HET     HG  A 507       1                                                       
HET     HG  A 509       1                                                       
HET      O  A 602       1                                                       
HET     FE  B 403       1                                                       
HET     FE  B 404       1                                                       
HET     HG  B 504       1                                                       
HET     HG  B 505       1                                                       
HET     HG  B 506       1                                                       
HET     HG  B 508       1                                                       
HET     HG  B 510       1                                                       
HET      O  B 601       1                                                       
HETNAM      FE FE (III) ION                                                     
HETNAM      HG MERCURY (II) ION                                                 
HETNAM       O OXYGEN ATOM                                                      
FORMUL   3   FE    4(FE 3+)                                                     
FORMUL   5   HG    10(HG 2+)                                                    
FORMUL  10    O    2(O)                                                         
FORMUL  19  HOH   *257(H2 O)                                                    
HELIX    1   1 TYR A   33  PHE A   46  1                                  14    
HELIX    2   2 ARG A   49  VAL A   53  5                                   5    
HELIX    3   3 VAL A   55  LEU A   65  1                                  11    
HELIX    4   4 PRO A   66  LEU A   95  1                                  30    
HELIX    5   5 LEU A   96  ILE A   99  5                                   4    
HELIX    6   6 ILE A  101  VAL A  130  1                                  30    
HELIX    7   7 ASP A  132  THR A  142  1                                  11    
HELIX    8   8 ASN A  143  GLU A  151  1                                   9    
HELIX    9   9 GLY A  152  GLY A  171  1                                  20    
HELIX   10  10 SER A  185  ILE A  206  1                                  22    
HELIX   11  11 ILE A  206  GLU A  220  1                                  15    
HELIX   12  12 MET A  224  SER A  254  1                                  31    
HELIX   13  13 ASP A  258  CYS A  268  1                                  11    
HELIX   14  14 CYS A  268  PHE A  291  1                                  24    
HELIX   15  15 ASN A  300  VAL A  319  1                                  20    
HELIX   16  16 TRP A  334  LEU A  339  1                                   6    
HELIX   17  17 TYR B   33  PHE B   46  1                                  14    
HELIX   18  18 ARG B   49  VAL B   53  5                                   5    
HELIX   19  19 ARG B   57  LEU B   65  1                                   9    
HELIX   20  20 PRO B   66  LEU B   96  1                                  31    
HELIX   21  21 PRO B   97  ILE B   99  5                                   3    
HELIX   22  22 ILE B  101  ASN B  128  1                                  28    
HELIX   23  23 ASP B  132  ASN B  143  1                                  12    
HELIX   24  24 LYS B  148  GLY B  171  1                                  24    
HELIX   25  25 SER B  185  ILE B  206  1                                  22    
HELIX   26  26 ILE B  206  ARG B  221  1                                  16    
HELIX   27  27 MET B  224  GLY B  255  1                                  32    
HELIX   28  28 ASP B  258  CYS B  268  1                                  11    
HELIX   29  29 CYS B  268  PHE B  291  1                                  24    
HELIX   30  30 ASN B  300  VAL B  319  1                                  20    
HELIX   31  31 ILE B  332  TRP B  338  5                                   7    
SHEET    1   A 2 GLY A 173  VAL A 177  0                                        
SHEET    2   A 2 LYS A 180  VAL A 184 -1  O  VAL A 182   N  HIS A 175           
SHEET    1   B 2 GLY B 173  VAL B 177  0                                        
SHEET    2   B 2 LYS B 180  VAL B 184 -1  O  VAL B 182   N  HIS B 175           
LINK         OE1 GLU A  84                FE    FE A 401     1555   1555  2.18  
LINK         OE1 GLU A 115                FE    FE A 401     1555   1555  2.11  
LINK         OE2 GLU A 115                FE    FE A 402     1555   1555  2.16  
LINK         ND1 HIS A 118                FE    FE A 401     1555   1555  2.40  
LINK         OH  TYR A 194                HG    HG A 501     1555   1555  2.70  
LINK         O   CYS A 196                HG    HG A 502     1555   1555  3.18  
LINK         SG  CYS A 196                HG    HG A 502     1555   1555  2.40  
LINK         OE2 GLU A 204                FE    FE A 402     1555   1555  2.13  
LINK         O   VAL A 210                HG    HG A 503     1555   1555  2.92  
LINK         SG  CYS A 214                HG    HG A 503     1555   1555  2.27  
LINK         N   CYS A 214                HG    HG A 503     1555   1555  3.26  
LINK         OE2 GLU A 238                FE    FE A 402     1555   1555  2.01  
LINK         ND1 HIS A 241                FE    FE A 402     1555   1555  2.12  
LINK         O   ILE A 264                HG    HG A 509     1555   1555  3.26  
LINK         O   ALA A 265                HG    HG A 501     1555   1555  3.48  
LINK         N   CYS A 268                HG    HG A 509     1555   1555  3.41  
LINK         SG  CYS A 268                HG    HG A 509     1555   1555  2.59  
LINK         SG  CYS A 272                HG    HG A 501     1555   1555  2.44  
LINK         NZ  LYS A 284                HG    HG A 507     1555   1555  3.47  
LINK         OE2 GLU A 309                HG    HG A 507     1555   1555  3.26  
LINK        FE    FE A 401                 O     O A 602     1555   1555  1.96  
LINK        FE    FE A 401                 O   HOH A 676     1555   1555  2.41  
LINK        FE    FE A 402                 O     O A 602     1555   1555  2.20  
LINK        FE    FE A 402                 O   HOH A 677     1555   1555  2.14  
LINK        HG    HG A 507                 O   HOH A 672     1555   1555  3.10  
LINK        HG    HG A 509                 O   HOH A 656     1555   1555  2.90  
LINK         OE1 GLU B  84                FE    FE B 403     1555   1555  2.08  
LINK         OE2 GLU B  84                FE    FE B 403     1555   1555  2.66  
LINK         OE1 GLU B 115                FE    FE B 403     1555   1555  2.14  
LINK         OE2 GLU B 115                FE    FE B 404     1555   1555  2.12  
LINK         ND1 HIS B 118                FE    FE B 403     1555   1555  2.39  
LINK         SG  CYS B 196                HG    HG B 504     1555   1555  2.78  
LINK         O   CYS B 196                HG    HG B 504     1555   1555  3.17  
LINK         OE2 GLU B 204                FE    FE B 404     1555   1555  2.16  
LINK         O   VAL B 210                HG    HG B 506     1555   1555  2.77  
LINK         SG  CYS B 214                HG    HG B 506     1555   1555  2.66  
LINK         N   CYS B 214                HG    HG B 506     1555   1555  3.12  
LINK         OE1 GLU B 238                FE    FE B 404     1555   1555  2.11  
LINK         ND1 HIS B 241                FE    FE B 404     1555   1555  2.21  
LINK         SG  CYS B 268                HG    HG B 505     1555   1555  2.56  
LINK         O   CYS B 268                HG    HG B 505     1555   1555  2.84  
LINK         SG  CYS B 272                HG    HG B 505     1555   1555  2.48  
LINK         O   CYS B 272                HG    HG B 508     1555   1555  2.84  
LINK         SG  CYS B 272                HG    HG B 508     1555   1555  3.24  
LINK         O   CYS B 305                HG    HG B 510     1555   1555  3.11  
LINK         OE2 GLU B 309                HG    HG B 510     1555   1555  3.21  
LINK        FE    FE B 403                 O     O B 601     1555   1555  2.15  
LINK        FE    FE B 403                 O   HOH B 661     1555   1555  2.42  
LINK        FE    FE B 404                 O     O B 601     1555   1555  2.14  
LINK        FE    FE B 404                 O   HOH B 662     1555   1555  2.34  
LINK        HG    HG B 510                 O   HOH B 602     1555   1555  3.40  
SITE     1 AC1  7 GLU A  84  GLU A 115  HIS A 118   FE A 402                    
SITE     2 AC1  7   O A 602  HOH A 676  HOH A 677                               
SITE     1 AC2  7 GLU A 115  GLU A 204  GLU A 238  HIS A 241                    
SITE     2 AC2  7  FE A 401    O A 602  HOH A 677                               
SITE     1 AC3  7 GLU B  84  GLU B 115  HIS B 118   FE B 404                    
SITE     2 AC3  7   O B 601  HOH B 661  HOH B 662                               
SITE     1 AC4  7 GLU B 115  GLU B 204  GLU B 238  HIS B 241                    
SITE     2 AC4  7  FE B 403    O B 601  HOH B 662                               
SITE     1 AC5  5 TYR A 194  MET A 198  ALA A 265  LYS A 269                    
SITE     2 AC5  5 CYS A 272                                                     
SITE     1 AC6  2 TYR A 157  CYS A 196                                          
SITE     1 AC7  2 VAL A 210  CYS A 214                                          
SITE     1 AC8  4 TYR B 156  TYR B 157  CYS B 196  VAL B 200                    
SITE     1 AC9  3 TYR B 194  CYS B 268  CYS B 272                               
SITE     1 BC1  4 VAL B 210  ALA B 213  CYS B 214  LEU B 304                    
SITE     1 BC2  4 LYS A 284  CYS A 305  GLN A 306  GLU A 309                    
SITE     1 BC3  4 MET B 198  CYS B 272  LEU B 275  PHE B 276                    
SITE     1 BC4  4 LYS A 191  ILE A 264  CYS A 268  HOH A 656                    
SITE     1 BC5  3 LYS B 284  CYS B 305  GLU B 309                               
SITE     1 BC6  8 GLU B 115  HIS B 118  GLU B 238  HIS B 241                    
SITE     2 BC6  8  FE B 403   FE B 404  HOH B 661  HOH B 662                    
SITE     1 BC7  8 GLU A 115  HIS A 118  GLU A 238  HIS A 241                    
SITE     2 BC7  8  FE A 401   FE A 402  HOH A 676  HOH A 677                    
CRYST1   74.100   84.600  114.800  90.00  90.00  90.00 P 21 21 21    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      0.013495  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.011820  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.008711        0.00000