HEADER    HYDROLASE                               14-NOV-01   1KEA              
TITLE     STRUCTURE OF A THERMOSTABLE THYMINE-DNA GLYCOSYLASE                   
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: POSSIBLE G-T MISMATCHES REPAIR ENZYME;                     
COMPND   3 CHAIN: A;                                                            
COMPND   4 SYNONYM: MISMATCH GLYCOSYLASE;                                       
COMPND   5 EC: 3.2.2.-;                                                         
COMPND   6 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: METHANOTHERMOBACTER THERMAUTOTROPHICUS;         
SOURCE   3 ORGANISM_TAXID: 145262;                                              
SOURCE   4 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   5 EXPRESSION_SYSTEM_TAXID: 562                                         
KEYWDS    DNA REPAIR, DNA GLYCOSYLASE, DNA MISMATCH, METHYLATION, BASE          
KEYWDS   2 TWISTING, HYDROLASE                                                  
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    C.D.MOL,A.S.ARVAI,T.J.BEGLEY,R.P.CUNNINGHAM,J.A.TAINER                
REVDAT   5   07-FEB-24 1KEA    1       REMARK LINK                              
REVDAT   4   13-JUL-11 1KEA    1       VERSN                                    
REVDAT   3   24-MAR-09 1KEA    1       ATOM   CONECT                            
REVDAT   2   24-FEB-09 1KEA    1       VERSN                                    
REVDAT   1   23-JAN-02 1KEA    0                                                
JRNL        AUTH   C.D.MOL,A.S.ARVAI,T.J.BEGLEY,R.P.CUNNINGHAM,J.A.TAINER       
JRNL        TITL   STRUCTURE AND ACTIVITY OF A THERMOSTABLE THYMINE-DNA         
JRNL        TITL 2 GLYCOSYLASE: EVIDENCE FOR BASE TWISTING TO REMOVE MISMATCHED 
JRNL        TITL 3 NORMAL DNA BASES.                                            
JRNL        REF    J.MOL.BIOL.                   V. 315   373 2002              
JRNL        REFN                   ISSN 0022-2836                               
JRNL        PMID   11786018                                                     
JRNL        DOI    10.1006/JMBI.2001.5264                                       
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.00 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS 0.9                                              
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) : 2.00                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 19.77                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 1194575.860                    
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : 0.0000                         
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 99.0                           
REMARK   3   NUMBER OF REFLECTIONS             : 16107                          
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) : 0.211                           
REMARK   3   FREE R VALUE                     : 0.248                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 4.800                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 778                             
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : 0.009                           
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) : 2.00                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.13                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 93.80                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 2365                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2370                       
REMARK   3   BIN FREE R VALUE                    : 0.2510                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 5.10                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 127                          
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.022                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 1752                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 27                                      
REMARK   3   SOLVENT ATOMS            : 200                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 21.40                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 31.90                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 2.10000                                              
REMARK   3    B22 (A**2) : 2.10000                                              
REMARK   3    B33 (A**2) : -4.20000                                             
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : 0.24                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.18                            
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) : 0.26                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.19                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.012                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.300                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 19.60                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 0.700                           
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) : 0.600 ; 1.500                
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : 1.050 ; 2.000                
REMARK   3   SIDE-CHAIN BOND              (A**2) : 0.880 ; 2.000                
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : 1.410 ; 2.500                
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : FLAT MODEL                                           
REMARK   3   KSOL        : 0.35                                                 
REMARK   3   BSOL        : 47.70                                                
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  : PAR.FS4                                        
REMARK   3  PARAMETER FILE  3  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : PROTEIN.TOP                                    
REMARK   3  TOPOLOGY FILE  2   : NULL                                           
REMARK   3  TOPOLOGY FILE  3   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1KEA COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 16-NOV-01.                  
REMARK 100 THE DEPOSITION ID IS D_1000014861.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 28-JUL-98                          
REMARK 200  TEMPERATURE           (KELVIN) : 200.0                              
REMARK 200  PH                             : 8.0                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : ALS                                
REMARK 200  BEAMLINE                       : 5.0.2                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.0                                
REMARK 200  MONOCHROMATOR                  : GRAPHITE                           
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 4                     
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 16125                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.000                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 20.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.0                               
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) : 2.00                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.07                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 98.5                               
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: AMORE                                                 
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 45.60                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.26                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: AMMONIUM SULFATE, ZINC ACETATE, HEPES,   
REMARK 280  PH 8.0, EVAPORATION, TEMPERATURE 298K                               
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 41 21 2                        
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,-Y,Z+1/2                                             
REMARK 290       3555   -Y+1/2,X+1/2,Z+1/4                                      
REMARK 290       4555   Y+1/2,-X+1/2,Z+3/4                                      
REMARK 290       5555   -X+1/2,Y+1/2,-Z+1/4                                     
REMARK 290       6555   X+1/2,-Y+1/2,-Z+3/4                                     
REMARK 290       7555   Y,X,-Z                                                  
REMARK 290       8555   -Y,-X,-Z+1/2                                            
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       49.47200            
REMARK 290   SMTRY1   3  0.000000 -1.000000  0.000000       34.10750            
REMARK 290   SMTRY2   3  1.000000  0.000000  0.000000       34.10750            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000       24.73600            
REMARK 290   SMTRY1   4  0.000000  1.000000  0.000000       34.10750            
REMARK 290   SMTRY2   4 -1.000000  0.000000  0.000000       34.10750            
REMARK 290   SMTRY3   4  0.000000  0.000000  1.000000       74.20800            
REMARK 290   SMTRY1   5 -1.000000  0.000000  0.000000       34.10750            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       34.10750            
REMARK 290   SMTRY3   5  0.000000  0.000000 -1.000000       24.73600            
REMARK 290   SMTRY1   6  1.000000  0.000000  0.000000       34.10750            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       34.10750            
REMARK 290   SMTRY3   6  0.000000  0.000000 -1.000000       74.20800            
REMARK 290   SMTRY1   7  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   7  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   7  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   8  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   8 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   8  0.000000  0.000000 -1.000000       49.47200            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1, 2                                                    
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 300 REMARK: THE BIOLOGICALLY ACTIVE STRUCTURE                            
REMARK 300 IS A MONOMER.                                                        
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC                         
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A                                     
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 2                                                       
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PISA,PQS                                              
REMARK 350 TOTAL BURIED SURFACE AREA: 4750 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 21180 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -153.0 KCAL/MOL                       
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   BIOMT1   2  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT2   2  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT3   2  0.000000  0.000000 -1.000000        0.00000            
REMARK 375                                                                      
REMARK 375 SPECIAL POSITION                                                     
REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS            
REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL          
REMARK 375 POSITIONS.                                                           
REMARK 375                                                                      
REMARK 375 ATOM RES CSSEQI                                                      
REMARK 375      HOH A5016  LIES ON A SPECIAL POSITION.                          
REMARK 465                                                                      
REMARK 465 MISSING RESIDUES                                                     
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                       
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                
REMARK 465                                                                      
REMARK 465   M RES C SSSEQI                                                     
REMARK 465     MET A     1                                                      
REMARK 465     ASP A     2                                                      
REMARK 465     SER A   220                                                      
REMARK 465     THR A   221                                                      
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     CYS A 219    SG                                                  
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    HOH A  5113     O    HOH A  5145              2.11            
REMARK 500   O    HOH A  5140     O    HOH A  5162              2.11            
REMARK 500   O    HOH A  5029     O    HOH A  5151              2.13            
REMARK 500   O    HOH A  5145     O    HOH A  5198              2.15            
REMARK 500   O    HOH A  5118     O    HOH A  5169              2.17            
REMARK 500   O    HOH A  5117     O    HOH A  5120              2.18            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS                                             
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC             
REMARK 500 SYMMETRY ARE IN CLOSE CONTACT.  AN ATOM LOCATED WITHIN 0.15          
REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A           
REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375             
REMARK 500 INSTEAD OF REMARK 500.  ATOMS WITH NON-BLANK ALTERNATE               
REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS.            
REMARK 500                                                                      
REMARK 500 DISTANCE CUTOFF:                                                     
REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS              
REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS                  
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI  SSYMOP   DISTANCE          
REMARK 500   O    HOH A  5093     O    HOH A  5093     7555     1.96            
REMARK 500   O    HOH A  5020     O    HOH A  5093     7555     2.02            
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    ALA A 140      143.67   -170.76                                   
REMARK 500    TYR A 164        4.34    -67.93                                   
REMARK 500    LYS A 181       36.26   -140.04                                   
REMARK 500    LYS A 181       35.70   -140.04                                   
REMARK 500    ILE A 196      -70.70   -104.71                                   
REMARK 500    LYS A 201       80.44     46.51                                   
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                              ZN A1001  ZN                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HIS A  31   ND1                                                    
REMARK 620 2 CYS A  66   SG   81.5                                              
REMARK 620 3 GLU A  68   OE1  87.8   7.4                                        
REMARK 620 N                    1     2                                         
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                             SF4 A 300  FE2                           
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS A 197   SG                                                     
REMARK 620 2 SF4 A 300   S1  109.0                                              
REMARK 620 3 SF4 A 300   S3  120.7 106.4                                        
REMARK 620 4 SF4 A 300   S4  113.3 100.4 104.9                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                             SF4 A 300  FE3                           
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS A 204   SG                                                     
REMARK 620 2 SF4 A 300   S1  115.6                                              
REMARK 620 3 SF4 A 300   S2  108.3 107.7                                        
REMARK 620 4 SF4 A 300   S4  116.4 102.1 106.1                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                             SF4 A 300  FE1                           
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS A 207   SG                                                     
REMARK 620 2 SF4 A 300   S2  108.9                                              
REMARK 620 3 SF4 A 300   S3  114.8 106.8                                        
REMARK 620 4 SF4 A 300   S4  116.5 101.4 107.2                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                             SF4 A 300  FE4                           
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS A 213   SG                                                     
REMARK 620 2 SF4 A 300   S1  106.8                                              
REMARK 620 3 SF4 A 300   S2  112.0 105.9                                        
REMARK 620 4 SF4 A 300   S3  116.4 106.9 108.2                                  
REMARK 620 N                    1     2     3                                   
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 1001                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ACT A 3001                
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ACT A 3002                
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ACT A 3003                
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ACT A 3004                
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC6                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL A 2001                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC7                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL A 2002                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC8                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SF4 A 300                 
DBREF  1KEA A    1   221  UNP    P29588   GTMR_METTF       1    221             
SEQRES   1 A  221  MET ASP ASP ALA THR ASN LYS LYS ARG LYS VAL PHE VAL          
SEQRES   2 A  221  SER THR ILE LEU THR PHE TRP ASN THR ASP ARG ARG ASP          
SEQRES   3 A  221  PHE PRO TRP ARG HIS THR ARG ASP PRO TYR VAL ILE LEU          
SEQRES   4 A  221  ILE THR GLU ILE LEU LEU ARG ARG THR THR ALA GLY HIS          
SEQRES   5 A  221  VAL LYS LYS ILE TYR ASP LYS PHE PHE VAL LYS TYR LYS          
SEQRES   6 A  221  CYS PHE GLU ASP ILE LEU LYS THR PRO LYS SER GLU ILE          
SEQRES   7 A  221  ALA LYS ASP ILE LYS GLU ILE GLY LEU SER ASN GLN ARG          
SEQRES   8 A  221  ALA GLU GLN LEU LYS GLU LEU ALA ARG VAL VAL ILE ASN          
SEQRES   9 A  221  ASP TYR GLY GLY ARG VAL PRO ARG ASN ARG LYS ALA ILE          
SEQRES  10 A  221  LEU ASP LEU PRO GLY VAL GLY LYS TYR THR CYS ALA ALA          
SEQRES  11 A  221  VAL MET CYS LEU ALA PHE GLY LYS LYS ALA ALA MET VAL          
SEQRES  12 A  221  ASP ALA ASN PHE VAL ARG VAL ILE ASN ARG TYR PHE GLY          
SEQRES  13 A  221  GLY SER TYR GLU ASN LEU ASN TYR ASN HIS LYS ALA LEU          
SEQRES  14 A  221  TRP GLU LEU ALA GLU THR LEU VAL PRO GLY GLY LYS CYS          
SEQRES  15 A  221  ARG ASP PHE ASN LEU GLY LEU MET ASP PHE SER ALA ILE          
SEQRES  16 A  221  ILE CYS ALA PRO ARG LYS PRO LYS CYS GLU LYS CYS GLY          
SEQRES  17 A  221  MET SER LYS LEU CYS SER TYR TYR GLU LYS CYS SER THR          
HET     ZN  A1001       1                                                       
HET    ACT  A3001       4                                                       
HET    ACT  A3002       4                                                       
HET    ACT  A3003       4                                                       
HET    ACT  A3004       4                                                       
HET     CL  A2001       1                                                       
HET     CL  A2002       1                                                       
HET    SF4  A 300       8                                                       
HETNAM      ZN ZINC ION                                                         
HETNAM     ACT ACETATE ION                                                      
HETNAM      CL CHLORIDE ION                                                     
HETNAM     SF4 IRON/SULFUR CLUSTER                                              
FORMUL   2   ZN    ZN 2+                                                        
FORMUL   3  ACT    4(C2 H3 O2 1-)                                               
FORMUL   7   CL    2(CL 1-)                                                     
FORMUL   9  SF4    FE4 S4                                                       
FORMUL  10  HOH   *200(H2 O)                                                    
HELIX    1   1 ALA A    4  ASP A   23  1                                  20    
HELIX    2   2 PHE A   27  THR A   32  5                                   6    
HELIX    3   3 ASP A   34  LEU A   45  1                                  12    
HELIX    4   4 THR A   49  TYR A   64  1                                  16    
HELIX    5   5 CYS A   66  THR A   73  1                                   8    
HELIX    6   6 PRO A   74  ILE A   82  1                                   9    
HELIX    7   7 LYS A   83  GLY A   86  5                                   4    
HELIX    8   8 LEU A   87  GLY A  107  1                                  21    
HELIX    9   9 ASN A  113  ASP A  119  1                                   7    
HELIX   10  10 GLY A  124  ALA A  135  1                                  12    
HELIX   11  11 ASP A  144  GLY A  156  1                                  13    
HELIX   12  12 GLY A  157  GLU A  160  5                                   4    
HELIX   13  13 HIS A  166  VAL A  177  1                                  12    
HELIX   14  14 LYS A  181  ILE A  196  1                                  16    
HELIX   15  15 LYS A  203  CYS A  207  5                                   5    
HELIX   16  16 CYS A  213  LYS A  218  1                                   6    
LINK         ND1 HIS A  31                ZN    ZN A1001     1555   7555  2.16  
LINK         SG  CYS A  66                ZN    ZN A1001     1555   1555  2.43  
LINK         OE1 GLU A  68                ZN    ZN A1001     1555   1555  2.30  
LINK         SG  CYS A 197                FE2  SF4 A 300     1555   1555  2.28  
LINK         SG  CYS A 204                FE3  SF4 A 300     1555   1555  2.19  
LINK         SG  CYS A 207                FE1  SF4 A 300     1555   1555  2.36  
LINK         SG  CYS A 213                FE4  SF4 A 300     1555   1555  2.43  
SITE     1 AC1  5 HIS A  31  CYS A  66  GLU A  68   CL A2001                    
SITE     2 AC1  5 ACT A3004                                                     
SITE     1 AC2  4 GLY A 124  LYS A 125  ACT A3002  HOH A5063                    
SITE     1 AC3  5 SER A  14  TYR A 164  ACT A3001  HOH A5148                    
SITE     2 AC3  5 HOH A5186                                                     
SITE     1 AC4  4 GLN A  90  LYS A 139  GLY A 179  HOH A5133                    
SITE     1 AC5  7 GLU A  68  ARG A 109  ARG A 183   ZN A1001                    
SITE     2 AC5  7  CL A2001  HOH A5056  HOH A5191                               
SITE     1 AC6  5 CYS A  66  GLU A  68   ZN A1001  ACT A3004                    
SITE     2 AC6  5 HOH A5025                                                     
SITE     1 AC7  3 ARG A  33  TYR A  36  VAL A 110                               
SITE     1 AC8  7 CYS A 197  CYS A 204  CYS A 207  MET A 209                    
SITE     2 AC8  7 SER A 210  CYS A 213  TYR A 215                               
CRYST1   68.215   68.215   98.944  90.00  90.00  90.00 P 41 21 2     8          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.014660  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.014660  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.010107        0.00000