HEADER    HYDROLASE                               01-SEP-98   1BS7              
TITLE     PEPTIDE DEFORMYLASE AS NI2+ CONTAINING FORM                           
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: PROTEIN (PEPTIDE DEFORMYLASE);                             
COMPND   3 CHAIN: A, B, C;                                                      
COMPND   4 SYNONYM: PDF;                                                        
COMPND   5 EC: 3.5.1.31;                                                        
COMPND   6 ENGINEERED: YES;                                                     
COMPND   7 OTHER_DETAILS: PDF PROTEIN FROM ESCHERICHIA COLI IS CRYSTALLIZED AS  
COMPND   8 NI2+ CONTAINING FORM                                                 
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI;                               
SOURCE   3 ORGANISM_TAXID: 562;                                                 
SOURCE   4 STRAIN: JM109;                                                       
SOURCE   5 CELLULAR_LOCATION: CYTOPLASMA;                                       
SOURCE   6 GENE: DEF;                                                           
SOURCE   7 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   8 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   9 EXPRESSION_SYSTEM_STRAIN: JM109;                                     
SOURCE  10 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  11 EXPRESSION_SYSTEM_VECTOR: PKK223-3 (PHARMACIA);                      
SOURCE  12 EXPRESSION_SYSTEM_PLASMID: P925C;                                    
SOURCE  13 EXPRESSION_SYSTEM_GENE: DEF                                          
KEYWDS    HYDROLASE, IRON METALLOPROTEASE; PROTEIN SYNTHESIS                    
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    A.BECKER,I.SCHLICHTING,W.KABSCH,D.GROCHE,S.SCHULTZ,A.F.V.WAGNER       
REVDAT   3   09-AUG-23 1BS7    1       REMARK LINK                              
REVDAT   2   24-FEB-09 1BS7    1       VERSN                                    
REVDAT   1   27-AUG-99 1BS7    0                                                
JRNL        AUTH   A.BECKER,I.SCHLICHTING,W.KABSCH,S.SCHULTZ,A.F.WAGNER         
JRNL        TITL   STRUCTURE OF PEPTIDE DEFORMYLASE AND IDENTIFICATION OF THE   
JRNL        TITL 2 SUBSTRATE BINDING SITE.                                      
JRNL        REF    J.BIOL.CHEM.                  V. 273 11413 1998              
JRNL        REFN                   ISSN 0021-9258                               
JRNL        PMID   9565550                                                      
JRNL        DOI    10.1074/JBC.273.19.11413                                     
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   A.BECKER,I.SCHLICHTING,W.KABSCH,D.GROCHE,S.SCHULTZ,          
REMARK   1  AUTH 2 A.F.WAGNER                                                   
REMARK   1  TITL   IRON CENTER, SUBSTRATE RECOGNITION AND MECHANISM OF PEPTIDE  
REMARK   1  TITL 2 DEFORMYLASE                                                  
REMARK   1  REF    NAT.STRUCT.BIOL.              V.   5  1053 1998              
REMARK   1  REFN                   ISSN 1072-8368                               
REMARK   1 REFERENCE 2                                                          
REMARK   1  AUTH   D.GROCHE,A.BECKER,I.SCHLICHTING,W.KABSCH,S.SCHULTZ,          
REMARK   1  AUTH 2 A.F.V.WAGNER                                                 
REMARK   1  TITL   ISOLATION AND CRYSTALLIZATION OF FUNCTIONALLY COMPETENT      
REMARK   1  TITL 2 ESCHERICHIA COLI PEPTIDE DEFORMYLASE FORMS CONTAINING EITHER 
REMARK   1  TITL 3 IRON OR NICKEL IN THE ACTIVE SITE                            
REMARK   1  REF    BIOCHEM.BIOPHYS.RES.COMMUN.   V. 246   342 1998              
REMARK   1  REFN                   ISSN 0006-291X                               
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.50 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : X-PLOR 3.851                                         
REMARK   3   AUTHORS     : BRUNGER                                              
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.50                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 6.00                           
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 100000.000                     
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : 0.0000                         
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 97.5                           
REMARK   3   NUMBER OF REFLECTIONS             : 19733                          
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) : 0.203                           
REMARK   3   FREE R VALUE                     : 0.272                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 10.000                          
REMARK   3   FREE R VALUE TEST SET COUNT      : 1973                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : 0.006                           
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 6                            
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.50                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.64                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 94.60                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 2734                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2860                       
REMARK   3   BIN FREE R VALUE                    : 0.3340                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 10.50                        
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 322                          
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.019                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 4038                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 13                                      
REMARK   3   SOLVENT ATOMS            : 131                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 44.90                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 37.90                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 0.00000                                              
REMARK   3    B22 (A**2) : 0.00000                                              
REMARK   3    B33 (A**2) : 0.00000                                              
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) : 0.28                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.37                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : 6.00                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : 0.38                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.42                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.013                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.300                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 26.10                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 2.270                           
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) : 1.490 ; 1.500                
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : 2.470 ; 2.000                
REMARK   3   SIDE-CHAIN BOND              (A**2) : 2.720 ; 2.000                
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : 4.240 ; 2.500                
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  : PDFNI.PARM                                     
REMARK   3  PARAMETER FILE  2  : PDFNI.SCATTER                                  
REMARK   3  PARAMETER FILE  3  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : PDFNI.TOP                                      
REMARK   3  TOPOLOGY FILE  2   : NULL                                           
REMARK   3  TOPOLOGY FILE  3   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: BULK SOLVENT MODEL USED                   
REMARK   4                                                                      
REMARK   4 1BS7 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 12-JUL-99.                  
REMARK 100 THE DEPOSITION ID IS D_1000007208.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 15-JAN-97                          
REMARK 200  TEMPERATURE           (KELVIN) : 293                                
REMARK 200  PH                             : 7.4                                
REMARK 200  NUMBER OF CRYSTALS USED        : 5                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : N                                  
REMARK 200  RADIATION SOURCE               : ROTATING ANODE                     
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : ELLIOTT GX-18                      
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.5418                             
REMARK 200  MONOCHROMATOR                  : NI FILTER                          
REMARK 200  OPTICS                         : FRANCKS DUBBLE-MIRROR OPTICS       
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : AREA DETECTOR                      
REMARK 200  DETECTOR MANUFACTURER          : SIEMENS-NICOLET X100               
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : XDS                                
REMARK 200  DATA SCALING SOFTWARE          : XSCALE                             
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 21929                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.500                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 20.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 97.2                               
REMARK 200  DATA REDUNDANCY                : 4.100                              
REMARK 200  R MERGE                    (I) : 0.08600                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 13.3000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.50                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.64                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 94.4                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 3.60                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.32900                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 2.420                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: X-PLOR 3.851                                          
REMARK 200 STARTING MODEL: 1ICJ                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 56.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.82                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: SEE:                                     
REMARK 280  D.GROCHE,A.BECKER,I.SCHLICHTING,W.KABSCH, S.SCHULTZ,A.F.V.WAGNER    
REMARK 280  (1998) BIOCHEM.BIOPHYS.RES.COMM. 246, 342, PH 7.4                   
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 1 2 1                          
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,Y,-Z                                                 
REMARK 290       3555   X+1/2,Y+1/2,Z                                           
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        0.00000            
REMARK 290   SMTRY2   2  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   3  1.000000  0.000000  0.000000       71.70000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       32.00000            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   4 -1.000000  0.000000  0.000000       71.70000            
REMARK 290   SMTRY2   4  0.000000  1.000000  0.000000       32.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1, 2, 3                                                 
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 350                                                                      
REMARK 350 BIOMOLECULE: 2                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC                         
REMARK 350 APPLY THE FOLLOWING TO CHAINS: 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 350                                                                      
REMARK 350 BIOMOLECULE: 3                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC                         
REMARK 350 APPLY THE FOLLOWING TO CHAINS: C                                     
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 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    ASN A  24     -167.80   -111.08                                   
REMARK 500    ARG A  56       77.12    -68.07                                   
REMARK 500    GLU A  68       34.30   -150.89                                   
REMARK 500    ARG A  69      130.86    -28.85                                   
REMARK 500    CYS A  90      131.63   -171.33                                   
REMARK 500    GLU A  95       -2.46     77.36                                   
REMARK 500    LYS A 165      -75.05    -50.20                                   
REMARK 500    ALA A 166       91.66    -63.28                                   
REMARK 500    PRO B 509       30.16    -98.10                                   
REMARK 500    ASN B 524     -168.40   -112.74                                   
REMARK 500    HIS B 554       55.47    -91.71                                   
REMARK 500    GLU B 595       -2.08     76.41                                   
REMARK 500    LEU B 664       49.75    -79.65                                   
REMARK 500    LYS B 665      -39.00   -139.30                                   
REMARK 500    ASN C1024     -168.92   -114.48                                   
REMARK 500    HIS C1054       56.36   -100.54                                   
REMARK 500    ASP C1067       38.43   -144.20                                   
REMARK 500    GLU C1095       -2.24     77.49                                   
REMARK 500    ARG C1163      -77.11    -60.51                                   
REMARK 500    LEU C1164       68.66    -69.79                                   
REMARK 500    LYS C1165       22.09    160.30                                   
REMARK 500    ALA C1166       55.74   -142.34                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: PLANAR GROUPS                                              
REMARK 500                                                                      
REMARK 500 PLANAR GROUPS IN THE FOLLOWING RESIDUES HAVE A TOTAL                 
REMARK 500 RMS DISTANCE OF ALL ATOMS FROM THE BEST-FIT PLANE                    
REMARK 500 BY MORE THAN AN EXPECTED VALUE OF 6*RMSD, WITH AN                    
REMARK 500 RMSD 0.02 ANGSTROMS, OR AT LEAST ONE ATOM HAS                        
REMARK 500 AN RMSD GREATER THAN THIS VALUE                                      
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        RMS     TYPE                                    
REMARK 500    ARG A 153         0.07    SIDE CHAIN                              
REMARK 500    HIS B 554         0.10    SIDE CHAIN                              
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: MAIN CHAIN PLANARITY                                       
REMARK 500                                                                      
REMARK 500 THE FOLLOWING RESIDUES HAVE A PSEUDO PLANARITY                       
REMARK 500 TORSION ANGLE, C(I) - CA(I) - N(I+1) - O(I), GREATER                 
REMARK 500 10.0 DEGREES. (M=MODEL NUMBER; RES=RESIDUE NAME;                     
REMARK 500 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER;                            
REMARK 500 I=INSERTION CODE).                                                   
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        ANGLE                                           
REMARK 500    ARG A 163        -11.40                                           
REMARK 500    GLU B 583         10.96                                           
REMARK 500    GLU C1083         10.45                                           
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                              NI A2001  NI                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS A  90   SG                                                     
REMARK 620 2 HIS A 132   NE2 127.1                                              
REMARK 620 3 HIS A 136   NE2 106.5  96.0                                        
REMARK 620 4 HOH A2034   O   137.1  94.9  73.4                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              NI B2001  NI                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS B 590   SG                                                     
REMARK 620 2 HIS B 632   NE2 114.8                                              
REMARK 620 3 HIS B 636   NE2 116.0 106.8                                        
REMARK 620 4 HOH B3004   O   137.3  91.7  84.2                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              NI C2001  NI                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS C1090   SG                                                     
REMARK 620 2 HIS C1132   NE2 114.3                                              
REMARK 620 3 HIS C1136   NE2 109.9  99.0                                        
REMARK 620 4 HOH C3005   O   149.3  92.2  78.9                                  
REMARK 620 N                    1     2     3                                   
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: NIA                                                 
REMARK 800 EVIDENCE_CODE: AUTHOR                                                
REMARK 800 SITE_DESCRIPTION: NI BINDING SITE FOR CHAIN A                        
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: NIB                                                 
REMARK 800 EVIDENCE_CODE: AUTHOR                                                
REMARK 800 SITE_DESCRIPTION: NI BINDING SITE FOR CHAIN B                        
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: NIC                                                 
REMARK 800 EVIDENCE_CODE: AUTHOR                                                
REMARK 800 SITE_DESCRIPTION: NI BINDING SITE FOR CHAIN C                        
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 B 3001                
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 B 3002                
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NI A 2001                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NI B 2001                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NI C 2001                 
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1BS4   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1BS5   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1BS6   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1BS8   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1BSZ   RELATED DB: PDB                                   
DBREF  1BS7 A    1   168  UNP    P0A6K3   DEF_ECOLI        1    168             
DBREF  1BS7 B  501   668  UNP    P0A6K3   DEF_ECOLI        1    168             
DBREF  1BS7 C 1001  1168  UNP    P0A6K3   DEF_ECOLI        1    168             
SEQRES   1 A  168  SER VAL LEU GLN VAL LEU HIS ILE PRO ASP GLU ARG LEU          
SEQRES   2 A  168  ARG LYS VAL ALA LYS PRO VAL GLU GLU VAL ASN ALA GLU          
SEQRES   3 A  168  ILE GLN ARG ILE VAL ASP ASP MET PHE GLU THR MET TYR          
SEQRES   4 A  168  ALA GLU GLU GLY ILE GLY LEU ALA ALA THR GLN VAL ASP          
SEQRES   5 A  168  ILE HIS GLN ARG ILE ILE VAL ILE ASP VAL SER GLU ASN          
SEQRES   6 A  168  ARG ASP GLU ARG LEU VAL LEU ILE ASN PRO GLU LEU LEU          
SEQRES   7 A  168  GLU LYS SER GLY GLU THR GLY ILE GLU GLU GLY CYS LEU          
SEQRES   8 A  168  SER ILE PRO GLU GLN ARG ALA LEU VAL PRO ARG ALA GLU          
SEQRES   9 A  168  LYS VAL LYS ILE ARG ALA LEU ASP ARG ASP GLY LYS PRO          
SEQRES  10 A  168  PHE GLU LEU GLU ALA ASP GLY LEU LEU ALA ILE CYS ILE          
SEQRES  11 A  168  GLN HIS GLU MET ASP HIS LEU VAL GLY LYS LEU PHE MET          
SEQRES  12 A  168  ASP TYR LEU SER PRO LEU LYS GLN GLN ARG ILE ARG GLN          
SEQRES  13 A  168  LYS VAL GLU LYS LEU ASP ARG LEU LYS ALA ARG ALA              
SEQRES   1 B  168  SER VAL LEU GLN VAL LEU HIS ILE PRO ASP GLU ARG LEU          
SEQRES   2 B  168  ARG LYS VAL ALA LYS PRO VAL GLU GLU VAL ASN ALA GLU          
SEQRES   3 B  168  ILE GLN ARG ILE VAL ASP ASP MET PHE GLU THR MET TYR          
SEQRES   4 B  168  ALA GLU GLU GLY ILE GLY LEU ALA ALA THR GLN VAL ASP          
SEQRES   5 B  168  ILE HIS GLN ARG ILE ILE VAL ILE ASP VAL SER GLU ASN          
SEQRES   6 B  168  ARG ASP GLU ARG LEU VAL LEU ILE ASN PRO GLU LEU LEU          
SEQRES   7 B  168  GLU LYS SER GLY GLU THR GLY ILE GLU GLU GLY CYS LEU          
SEQRES   8 B  168  SER ILE PRO GLU GLN ARG ALA LEU VAL PRO ARG ALA GLU          
SEQRES   9 B  168  LYS VAL LYS ILE ARG ALA LEU ASP ARG ASP GLY LYS PRO          
SEQRES  10 B  168  PHE GLU LEU GLU ALA ASP GLY LEU LEU ALA ILE CYS ILE          
SEQRES  11 B  168  GLN HIS GLU MET ASP HIS LEU VAL GLY LYS LEU PHE MET          
SEQRES  12 B  168  ASP TYR LEU SER PRO LEU LYS GLN GLN ARG ILE ARG GLN          
SEQRES  13 B  168  LYS VAL GLU LYS LEU ASP ARG LEU LYS ALA ARG ALA              
SEQRES   1 C  168  SER VAL LEU GLN VAL LEU HIS ILE PRO ASP GLU ARG LEU          
SEQRES   2 C  168  ARG LYS VAL ALA LYS PRO VAL GLU GLU VAL ASN ALA GLU          
SEQRES   3 C  168  ILE GLN ARG ILE VAL ASP ASP MET PHE GLU THR MET TYR          
SEQRES   4 C  168  ALA GLU GLU GLY ILE GLY LEU ALA ALA THR GLN VAL ASP          
SEQRES   5 C  168  ILE HIS GLN ARG ILE ILE VAL ILE ASP VAL SER GLU ASN          
SEQRES   6 C  168  ARG ASP GLU ARG LEU VAL LEU ILE ASN PRO GLU LEU LEU          
SEQRES   7 C  168  GLU LYS SER GLY GLU THR GLY ILE GLU GLU GLY CYS LEU          
SEQRES   8 C  168  SER ILE PRO GLU GLN ARG ALA LEU VAL PRO ARG ALA GLU          
SEQRES   9 C  168  LYS VAL LYS ILE ARG ALA LEU ASP ARG ASP GLY LYS PRO          
SEQRES  10 C  168  PHE GLU LEU GLU ALA ASP GLY LEU LEU ALA ILE CYS ILE          
SEQRES  11 C  168  GLN HIS GLU MET ASP HIS LEU VAL GLY LYS LEU PHE MET          
SEQRES  12 C  168  ASP TYR LEU SER PRO LEU LYS GLN GLN ARG ILE ARG GLN          
SEQRES  13 C  168  LYS VAL GLU LYS LEU ASP ARG LEU LYS ALA ARG ALA              
HET     NI  A2001       1                                                       
HET    SO4  B3001       5                                                       
HET    SO4  B3002       5                                                       
HET     NI  B2001       1                                                       
HET     NI  C2001       1                                                       
HETNAM      NI NICKEL (II) ION                                                  
HETNAM     SO4 SULFATE ION                                                      
FORMUL   4   NI    3(NI 2+)                                                     
FORMUL   5  SO4    2(O4 S 2-)                                                   
FORMUL   9  HOH   *131(H2 O)                                                    
HELIX    1   1 GLU A   11  ARG A   14  5                                   4    
HELIX    2   2 ALA A   25  GLU A   41  1                                  17    
HELIX    3   3 ALA A   48  VAL A   51  5                                   4    
HELIX    4   4 GLY A  124  VAL A  138  1                                  15    
HELIX    5   5 PHE A  142  TYR A  145  5                                   4    
HELIX    6   6 PRO A  148  LYS A  165  1                                  18    
HELIX    7   7 GLU B  511  ARG B  514  5                                   4    
HELIX    8   8 ALA B  525  GLU B  541  1                                  17    
HELIX    9   9 ALA B  548  VAL B  551  5                                   4    
HELIX   10  10 GLY B  624  VAL B  638  1                                  15    
HELIX   11  11 PHE B  642  TYR B  645  5                                   4    
HELIX   12  12 PRO B  648  ALA B  666  1                                  19    
HELIX   13  13 GLU C 1011  ARG C 1014  5                                   4    
HELIX   14  14 ALA C 1025  GLU C 1041  1                                  17    
HELIX   15  15 ALA C 1048  VAL C 1051  5                                   4    
HELIX   16  16 GLY C 1124  VAL C 1138  1                                  15    
HELIX   17  17 PHE C 1142  TYR C 1145  5                                   4    
HELIX   18  18 PRO C 1148  ARG C 1163  1                                  16    
SHEET    1   A 3 GLY A  45  ALA A  47  0                                        
SHEET    2   A 3 ILE A  57  ILE A  60 -1  N  VAL A  59   O  LEU A  46           
SHEET    3   A 3 LEU A  70  ILE A  73 -1  N  LEU A  72   O  ILE A  58           
SHEET    1   B 3 PRO A 117  ASP A 123  0                                        
SHEET    2   B 3 LYS A 105  LEU A 111 -1  N  ALA A 110   O  PHE A 118           
SHEET    3   B 3 GLU A  76  SER A  81 -1  N  SER A  81   O  LYS A 105           
SHEET    1   C 3 GLY B 545  ALA B 547  0                                        
SHEET    2   C 3 ILE B 557  ILE B 560 -1  N  VAL B 559   O  LEU B 546           
SHEET    3   C 3 LEU B 570  ILE B 573 -1  N  LEU B 572   O  ILE B 558           
SHEET    1   D 3 PRO B 617  ASP B 623  0                                        
SHEET    2   D 3 LYS B 605  LEU B 611 -1  N  ALA B 610   O  PHE B 618           
SHEET    3   D 3 GLU B 576  SER B 581 -1  N  SER B 581   O  LYS B 605           
SHEET    1   E 3 GLY C1045  ALA C1047  0                                        
SHEET    2   E 3 ILE C1057  ILE C1060 -1  N  VAL C1059   O  LEU C1046           
SHEET    3   E 3 LEU C1070  ILE C1073 -1  N  LEU C1072   O  ILE C1058           
SHEET    1   F 3 PRO C1117  ASP C1123  0                                        
SHEET    2   F 3 LYS C1105  LEU C1111 -1  N  ALA C1110   O  PHE C1118           
SHEET    3   F 3 GLU C1076  SER C1081 -1  N  SER C1081   O  LYS C1105           
LINK         SG  CYS A  90                NI    NI A2001     1555   1555  2.08  
LINK         NE2 HIS A 132                NI    NI A2001     1555   1555  2.07  
LINK         NE2 HIS A 136                NI    NI A2001     1555   1555  2.36  
LINK        NI    NI A2001                 O   HOH A2034     1555   1555  2.52  
LINK         SG  CYS B 590                NI    NI B2001     1555   1555  2.20  
LINK         NE2 HIS B 632                NI    NI B2001     1555   1555  2.18  
LINK         NE2 HIS B 636                NI    NI B2001     1555   1555  1.99  
LINK        NI    NI B2001                 O   HOH B3004     1555   1555  1.93  
LINK         SG  CYS C1090                NI    NI C2001     1555   1555  2.15  
LINK         NE2 HIS C1132                NI    NI C2001     1555   1555  2.20  
LINK         NE2 HIS C1136                NI    NI C2001     1555   1555  2.13  
LINK        NI    NI C2001                 O   HOH C3005     1555   1555  2.16  
CISPEP   1 ILE A    8    PRO A    9          0         9.90                     
CISPEP   2 ILE B  508    PRO B  509          0        11.12                     
CISPEP   3 ILE C 1008    PRO C 1009          0        11.31                     
SITE     1 NIA  3 CYS A  90  HIS A 132  HIS A 136                               
SITE     1 NIB  3 CYS B 590  HIS B 632  HIS B 636                               
SITE     1 NIC  3 CYS C1090  HIS C1132  HIS C1136                               
SITE     1 AC1  5 ASP B 552  ILE B 553  HIS B 554  GLN B 555                    
SITE     2 AC1  5 ARG C1029                                                     
SITE     1 AC2  4 ARG B 529  ILE C1053  HIS C1054  GLN C1055                    
SITE     1 AC3  4 CYS A  90  HIS A 132  HIS A 136  HOH A2034                    
SITE     1 AC4  5 GLN B 550  CYS B 590  HIS B 632  HIS B 636                    
SITE     2 AC4  5 HOH B3004                                                     
SITE     1 AC5  5 GLN C1050  CYS C1090  HIS C1132  HIS C1136                    
SITE     2 AC5  5 HOH C3005                                                     
CRYST1  143.400   64.000   84.500  90.00 123.00  90.00 C 1 2 1      12          
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      0.006974  0.000000  0.004529        0.00000                         
SCALE2      0.000000  0.015625  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.014111        0.00000