PDB Short entry for 1I7D
HEADER    ISOMERASE/DNA                           08-MAR-01   1I7D              
TITLE     NONCOVALENT COMPLEX OF E.COLI DNA TOPOISOMERASE III WITH AN 8-BASE    
TITLE    2 SINGLE-STRANDED DNA OLIGONUCLEOTIDE                                  
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: 5'-D(*CP*GP*CP*AP*AP*CP*TP*T)-3';                          
COMPND   3 CHAIN: B;                                                            
COMPND   4 ENGINEERED: YES;                                                     
COMPND   5 MOL_ID: 2;                                                           
COMPND   6 MOLECULE: DNA TOPOISOMERASE III;                                     
COMPND   7 CHAIN: A;                                                            
COMPND   8 EC: 5.99.1.2;                                                        
COMPND   9 ENGINEERED: YES;                                                     
COMPND  10 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 SYNTHETIC: YES;                                                      
SOURCE   3 MOL_ID: 2;                                                           
SOURCE   4 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI;                               
SOURCE   5 ORGANISM_TAXID: 562;                                                 
SOURCE   6 STRAIN: HMS-83;                                                      
SOURCE   7 GENE: TOPB;                                                          
SOURCE   8 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21;                            
SOURCE   9 EXPRESSION_SYSTEM_TAXID: 511693;                                     
SOURCE  10 EXPRESSION_SYSTEM_STRAIN: BL21;                                      
SOURCE  11 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  12 EXPRESSION_SYSTEM_PLASMID: PET21                                     
KEYWDS    DNA TOPOISOMERASE, DECATENATING ENZYME, PROTEIN-DNA COMPLEX, SINGLE-  
KEYWDS   2 STRANDED DNA, ISOMERASE-DNA COMPLEX                                  
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    A.CHANGELA,R.J.DIGATE,A.MONDRAGON                                     
REVDAT   4   09-AUG-23 1I7D    1       REMARK                                   
REVDAT   3   27-OCT-21 1I7D    1       REMARK SEQADV                            
REVDAT   2   24-FEB-09 1I7D    1       VERSN                                    
REVDAT   1   29-JUN-01 1I7D    0                                                
JRNL        AUTH   A.CHANGELA,R.J.DIGATE,A.MONDRAGON                            
JRNL        TITL   CRYSTAL STRUCTURE OF A COMPLEX OF A TYPE IA DNA              
JRNL        TITL 2 TOPOISOMERASE WITH A SINGLE-STRANDED DNA MOLECULE.           
JRNL        REF    NATURE                        V. 411  1077 2001              
JRNL        REFN                   ISSN 0028-0836                               
JRNL        PMID   11429611                                                     
JRNL        DOI    10.1038/35082615                                             
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.05 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) : 2.05                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 29.63                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 1962525.770                    
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : 0.0000                         
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 96.1                           
REMARK   3   NUMBER OF REFLECTIONS             : 55797                          
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) : 0.233                           
REMARK   3   FREE R VALUE                     : 0.260                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.100                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 2823                            
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) : 2.05                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.18                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 96.10                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 8746                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.3010                       
REMARK   3   BIN FREE R VALUE                    : 0.3040                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 5.10                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 466                          
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            : 4933                                    
REMARK   3   NUCLEIC ACID ATOMS       : 158                                     
REMARK   3   HETEROGEN ATOMS          : 6                                       
REMARK   3   SOLVENT ATOMS            : 332                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 25.70                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 47.80                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -4.69000                                             
REMARK   3    B22 (A**2) : -11.79000                                            
REMARK   3    B33 (A**2) : 16.48000                                             
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : -5.46000                                             
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : 0.27                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.29                            
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) : 0.31                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.28                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.005                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.200                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 22.10                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 0.850                           
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) : 2.520 ; 2.000                
REMARK   3   SIDE-CHAIN BOND              (A**2) : 2.620 ; 2.000                
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : 3.750 ; 2.500                
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : FLAT MODEL                                           
REMARK   3   KSOL        : 0.39                                                 
REMARK   3   BSOL        : 53.73                                                
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  : DNA-RNA_REP.PARAM                              
REMARK   3  PARAMETER FILE  3  : CIS_PEPTIDE.PARAM                              
REMARK   3  PARAMETER FILE  4  : WATER_REP.PARAM                                
REMARK   3  PARAMETER FILE  5  : ION.PARAM                                      
REMARK   3  PARAMETER FILE  6  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : PROTEIN.TOP                                    
REMARK   3  TOPOLOGY FILE  2   : DNA-RNA.TOP                                    
REMARK   3  TOPOLOGY FILE  3   : WATER.TOP                                      
REMARK   3  TOPOLOGY FILE  4   : ION.TOP                                        
REMARK   3  TOPOLOGY FILE  5   : NULL                                           
REMARK   3  TOPOLOGY FILE  6   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: REFINEMENT DONE IN CNS 1.0                
REMARK   4                                                                      
REMARK   4 1I7D COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 13-MAR-01.                  
REMARK 100 THE DEPOSITION ID IS D_1000012996.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 01-JUN-00                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 5.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : APS                                
REMARK 200  BEAMLINE                       : 5ID-B                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.9948                             
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : MARRESEARCH                        
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : XDS                                
REMARK 200  DATA SCALING SOFTWARE          : CCP4 (SCALA)                       
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 55797                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.050                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 29.630                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 96.2                               
REMARK 200  DATA REDUNDANCY                : 5.300                              
REMARK 200  R MERGE                    (I) : 0.09800                            
REMARK 200  R SYM                      (I) : 9.00000                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 5.5000                             
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.05                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.10                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 96.9                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 3.50                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.24400                            
REMARK 200  R SYM FOR SHELL            (I) : 20.7000                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 2.700                              
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: PDB ENTRY 1D6M                                       
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 59.46                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.03                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 1.3M AMMONIUM SULFATE, 0.8M SODIUM       
REMARK 280  CHLORIDE, 0.1M SODIUM CITRATE, PH 5.5, VAPOR DIFFUSION, HANGING     
REMARK 280  DROP, TEMPERATURE 295K                                              
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       61.00550            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       30.41550            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   4 -1.000000  0.000000  0.000000       61.00550            
REMARK 290   SMTRY2   4  0.000000  1.000000  0.000000       30.41550            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: DIMERIC                           
REMARK 350 APPLY THE FOLLOWING TO CHAINS: B, A                                  
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 465                                                                      
REMARK 465 MISSING RESIDUES                                                     
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                       
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                
REMARK 465                                                                      
REMARK 465   M RES C SSSEQI                                                     
REMARK 465     GLY A   621                                                      
REMARK 465     SER A   622                                                      
REMARK 465     GLY A   623                                                      
REMARK 465     GLY A   624                                                      
REMARK 465     SER A   625                                                      
REMARK 465     ALA A   626                                                      
REMARK 465     ASP A   627                                                      
REMARK 465     LYS A   628                                                      
REMARK 465     LYS A   629                                                      
REMARK 465     LYS A   630                                                      
REMARK 465     ALA A   631                                                      
REMARK 465     ALA A   632                                                      
REMARK 465     PRO A   633                                                      
REMARK 465     ARG A   634                                                      
REMARK 465     LYS A   635                                                      
REMARK 465     ARG A   636                                                      
REMARK 465     SER A   637                                                      
REMARK 465     ALA A   638                                                      
REMARK 465     LYS A   639                                                      
REMARK 465     LYS A   640                                                      
REMARK 465     SER A   641                                                      
REMARK 465     PRO A   642                                                      
REMARK 465     PRO A   643                                                      
REMARK 465     ALA A   644                                                      
REMARK 465     ASP A   645                                                      
REMARK 465     GLU A   646                                                      
REMARK 465     VAL A   647                                                      
REMARK 465     GLY A   648                                                      
REMARK 465     SER A   649                                                      
REMARK 465     GLY A   650                                                      
REMARK 465     ALA A   651                                                      
REMARK 465     ILE A   652                                                      
REMARK 465     ALA A   653                                                      
REMARK 465     HIS A   654                                                      
REMARK 465     HIS A   655                                                      
REMARK 465     HIS A   656                                                      
REMARK 465     HIS A   657                                                      
REMARK 465     HIS A   658                                                      
REMARK 465     HIS A   659                                                      
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    THR A  39     -169.71   -125.12                                   
REMARK 500    TRP A  40      147.19   -173.62                                   
REMARK 500    ILE A  42       67.43   -106.62                                   
REMARK 500    SER A 243     -171.96    -68.87                                   
REMARK 500    PRO A 248      -71.15    -54.01                                   
REMARK 500    PHE A 328      128.73    -32.56                                   
REMARK 500    ARG A 330       46.12   -100.51                                   
REMARK 500    ASN A 370     -158.16    -71.08                                   
REMARK 500    ASP A 379     -127.34    -90.43                                   
REMARK 500    ILE A 429     -136.59   -130.27                                   
REMARK 500    ALA A 430      -90.43    -52.60                                   
REMARK 500    LYS A 433       75.66   -115.60                                   
REMARK 500    ALA A 438      117.16   -171.08                                   
REMARK 500    SER A 452      -92.72    -20.95                                   
REMARK 500    ASN A 459       95.19    -68.45                                   
REMARK 500    PRO A 463      109.91    -56.19                                   
REMARK 500    ASP A 471      153.08    -42.33                                   
REMARK 500    LYS A 544      -93.42    -74.68                                   
REMARK 500    CYS A 586      148.45   -174.12                                   
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     DA B 705         0.05    SIDE CHAIN                              
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL A 800                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 900                 
DBREF  1I7D A    1   653  UNP    P14294   TOP3_ECOLI       1    653             
DBREF  1I7D B  701   708  PDB    1I7D     1I7D           701    708             
SEQADV 1I7D PHE A  328  UNP  P14294    TYR   328 ENGINEERED MUTATION            
SEQADV 1I7D HIS A  654  UNP  P14294              EXPRESSION TAG                 
SEQADV 1I7D HIS A  655  UNP  P14294              EXPRESSION TAG                 
SEQADV 1I7D HIS A  656  UNP  P14294              EXPRESSION TAG                 
SEQADV 1I7D HIS A  657  UNP  P14294              EXPRESSION TAG                 
SEQADV 1I7D HIS A  658  UNP  P14294              EXPRESSION TAG                 
SEQADV 1I7D HIS A  659  UNP  P14294              EXPRESSION TAG                 
SEQRES   1 B    8   DC  DG  DC  DA  DA  DC  DT  DT                              
SEQRES   1 A  659  MET ARG LEU PHE ILE ALA GLU LYS PRO SER LEU ALA ARG          
SEQRES   2 A  659  ALA ILE ALA ASP VAL LEU PRO LYS PRO HIS ARG LYS GLY          
SEQRES   3 A  659  ASP GLY PHE ILE GLU CYS GLY ASN GLY GLN VAL VAL THR          
SEQRES   4 A  659  TRP CYS ILE GLY HIS LEU LEU GLU GLN ALA GLN PRO ASP          
SEQRES   5 A  659  ALA TYR ASP SER ARG TYR ALA ARG TRP ASN LEU ALA ASP          
SEQRES   6 A  659  LEU PRO ILE VAL PRO GLU LYS TRP GLN LEU GLN PRO ARG          
SEQRES   7 A  659  PRO SER VAL THR LYS GLN LEU ASN VAL ILE LYS ARG PHE          
SEQRES   8 A  659  LEU HIS GLU ALA SER GLU ILE VAL HIS ALA GLY ASP PRO          
SEQRES   9 A  659  ASP ARG GLU GLY GLN LEU LEU VAL ASP GLU VAL LEU ASP          
SEQRES  10 A  659  TYR LEU GLN LEU ALA PRO GLU LYS ARG GLN GLN VAL GLN          
SEQRES  11 A  659  ARG CYS LEU ILE ASN ASP LEU ASN PRO GLN ALA VAL GLU          
SEQRES  12 A  659  ARG ALA ILE ASP ARG LEU ARG SER ASN SER GLU PHE VAL          
SEQRES  13 A  659  PRO LEU CYS VAL SER ALA LEU ALA ARG ALA ARG ALA ASP          
SEQRES  14 A  659  TRP LEU TYR GLY ILE ASN MET THR ARG ALA TYR THR ILE          
SEQRES  15 A  659  LEU GLY ARG ASN ALA GLY TYR GLN GLY VAL LEU SER VAL          
SEQRES  16 A  659  GLY ARG VAL GLN THR PRO VAL LEU GLY LEU VAL VAL ARG          
SEQRES  17 A  659  ARG ASP GLU GLU ILE GLU ASN PHE VAL ALA LYS ASP PHE          
SEQRES  18 A  659  PHE GLU VAL LYS ALA HIS ILE VAL THR PRO ALA ASP GLU          
SEQRES  19 A  659  ARG PHE THR ALA ILE TRP GLN PRO SER GLU ALA CYS GLU          
SEQRES  20 A  659  PRO TYR GLN ASP GLU GLU GLY ARG LEU LEU HIS ARG PRO          
SEQRES  21 A  659  LEU ALA GLU HIS VAL VAL ASN ARG ILE SER GLY GLN PRO          
SEQRES  22 A  659  ALA ILE VAL THR SER TYR ASN ASP LYS ARG GLU SER GLU          
SEQRES  23 A  659  SER ALA PRO LEU PRO PHE SER LEU SER ALA LEU GLN ILE          
SEQRES  24 A  659  GLU ALA ALA LYS ARG PHE GLY LEU SER ALA GLN ASN VAL          
SEQRES  25 A  659  LEU ASP ILE CYS GLN LYS LEU TYR GLU THR HIS LYS LEU          
SEQRES  26 A  659  ILE THR PHE PRO ARG SER ASP CYS ARG TYR LEU PRO GLU          
SEQRES  27 A  659  GLU HIS PHE ALA GLY ARG HIS ALA VAL MET ASN ALA ILE          
SEQRES  28 A  659  SER VAL HIS ALA PRO ASP LEU LEU PRO GLN PRO VAL VAL          
SEQRES  29 A  659  ASP PRO ASP ILE ARG ASN ARG CYS TRP ASP ASP LYS LYS          
SEQRES  30 A  659  VAL ASP ALA HIS HIS ALA ILE ILE PRO THR ALA ARG SER          
SEQRES  31 A  659  SER ALA ILE ASN LEU THR GLU ASN GLU ALA LYS VAL TYR          
SEQRES  32 A  659  ASN LEU ILE ALA ARG GLN TYR LEU MET GLN PHE CYS PRO          
SEQRES  33 A  659  ASP ALA VAL PHE ARG LYS CYS VAL ILE GLU LEU ASP ILE          
SEQRES  34 A  659  ALA LYS GLY LYS PHE VAL ALA LYS ALA ARG PHE LEU ALA          
SEQRES  35 A  659  GLU ALA GLY TRP ARG THR LEU LEU GLY SER LYS GLU ARG          
SEQRES  36 A  659  ASP GLU GLU ASN ASP GLY THR PRO LEU PRO VAL VAL ALA          
SEQRES  37 A  659  LYS GLY ASP GLU LEU LEU CYS GLU LYS GLY GLU VAL VAL          
SEQRES  38 A  659  GLU ARG GLN THR GLN PRO PRO ARG HIS PHE THR ASP ALA          
SEQRES  39 A  659  THR LEU LEU SER ALA MET THR GLY ILE ALA ARG PHE VAL          
SEQRES  40 A  659  GLN ASP LYS ASP LEU LYS LYS ILE LEU ARG ALA THR ASP          
SEQRES  41 A  659  GLY LEU GLY THR GLU ALA THR ARG ALA GLY ILE ILE GLU          
SEQRES  42 A  659  LEU LEU PHE LYS ARG GLY PHE LEU THR LYS LYS GLY ARG          
SEQRES  43 A  659  TYR ILE HIS SER THR ASP ALA GLY LYS ALA LEU PHE HIS          
SEQRES  44 A  659  SER LEU PRO GLU MET ALA THR ARG PRO ASP MET THR ALA          
SEQRES  45 A  659  HIS TRP GLU SER VAL LEU THR GLN ILE SER GLU LYS GLN          
SEQRES  46 A  659  CYS ARG TYR GLN ASP PHE MET GLN PRO LEU VAL GLY THR          
SEQRES  47 A  659  LEU TYR GLN LEU ILE ASP GLN ALA LYS ARG THR PRO VAL          
SEQRES  48 A  659  ARG GLN PHE ARG GLY ILE VAL ALA PRO GLY SER GLY GLY          
SEQRES  49 A  659  SER ALA ASP LYS LYS LYS ALA ALA PRO ARG LYS ARG SER          
SEQRES  50 A  659  ALA LYS LYS SER PRO PRO ALA ASP GLU VAL GLY SER GLY          
SEQRES  51 A  659  ALA ILE ALA HIS HIS HIS HIS HIS HIS                          
HET     CL  A 800       1                                                       
HET    SO4  A 900       5                                                       
HETNAM      CL CHLORIDE ION                                                     
HETNAM     SO4 SULFATE ION                                                      
FORMUL   3   CL    CL 1-                                                        
FORMUL   4  SO4    O4 S 2-                                                      
FORMUL   5  HOH   *332(H2 O)                                                    
HELIX    1   1 LYS A    8  ASP A   17  1                                  10    
HELIX    2   2 GLN A   50  ASP A   55  1                                   6    
HELIX    3   3 SER A   56  ARG A   60  5                                   5    
HELIX    4   4 VAL A   81  ALA A   95  1                                  15    
HELIX    5   5 ASP A  105  LEU A  119  1                                  15    
HELIX    6   6 ALA A  122  GLN A  128  1                                   7    
HELIX    7   7 ASN A  138  ASP A  147  1                                  10    
HELIX    8   8 PHE A  155  ASN A  186  1                                  32    
HELIX    9   9 VAL A  198  ASN A  215  1                                  18    
HELIX   10  10 SER A  243  GLU A  247  5                                   5    
HELIX   11  11 HIS A  258  SER A  270  1                                  13    
HELIX   12  12 SER A  293  GLY A  306  1                                  14    
HELIX   13  13 SER A  308  THR A  322  1                                  15    
HELIX   14  14 PRO A  337  ALA A  342  5                                   6    
HELIX   15  15 GLY A  343  ALA A  355  1                                  13    
HELIX   16  16 ASP A  374  VAL A  378  5                                   5    
HELIX   17  17 THR A  396  GLN A  413  1                                  18    
HELIX   18  18 ALA A  444  LEU A  450  5                                   7    
HELIX   19  19 LYS A  453  GLU A  457  5                                   5    
HELIX   20  20 ASP A  493  GLY A  502  1                                  10    
HELIX   21  21 ILE A  503  VAL A  507  5                                   5    
HELIX   22  22 ASP A  509  THR A  519  1                                  11    
HELIX   23  23 THR A  527  ARG A  538  1                                  12    
HELIX   24  24 THR A  551  LEU A  561  1                                  11    
HELIX   25  25 PRO A  562  ARG A  567  1                                   6    
HELIX   26  26 PRO A  568  GLU A  583  1                                  16    
HELIX   27  27 ARG A  587  ARG A  608  1                                  22    
HELIX   28  28 VAL A  611  ARG A  615  5                                   5    
SHEET    1   A 7 ARG A  24  GLY A  26  0                                        
SHEET    2   A 7 PHE A  29  CYS A  32 -1  O  PHE A  29   N  GLY A  26           
SHEET    3   A 7 GLN A  36  TRP A  40 -1  O  GLN A  36   N  CYS A  32           
SHEET    4   A 7 ARG A   2  ALA A   6  1  O  ARG A   2   N  VAL A  37           
SHEET    5   A 7 GLU A  97  ALA A 101  1  O  GLU A  97   N  LEU A   3           
SHEET    6   A 7 GLN A 130  ARG A 131  1  O  GLN A 130   N  HIS A 100           
SHEET    7   A 7 ARG A 150  SER A 151 -1  O  ARG A 150   N  ARG A 131           
SHEET    1   B 2 LEU A  46  GLN A  48  0                                        
SHEET    2   B 2 LEU A  75  PRO A  77 -1  O  GLN A  76   N  GLU A  47           
SHEET    1   C 7 SER A 278  GLU A 286  0                                        
SHEET    2   C 7 ALA A 418  LEU A 427 -1  O  ALA A 418   N  GLU A 286           
SHEET    3   C 7 PHE A 434  ALA A 436 -1  O  PHE A 434   N  LEU A 427           
SHEET    4   C 7 ARG A 235  TRP A 240 -1  N  ILE A 239   O  VAL A 435           
SHEET    5   C 7 ASP A 220  VAL A 229 -1  O  VAL A 224   N  TRP A 240           
SHEET    6   C 7 GLU A 472  GLN A 484 -1  N  LEU A 474   O  VAL A 229           
SHEET    7   C 7 PRO A 273  ILE A 275 -1  N  ALA A 274   O  LEU A 473           
SHEET    1   D 4 SER A 278  GLU A 286  0                                        
SHEET    2   D 4 ALA A 418  LEU A 427 -1  O  ALA A 418   N  GLU A 286           
SHEET    3   D 4 ALA A 438  GLU A 443 -1  O  ALA A 438   N  CYS A 423           
SHEET    4   D 4 ASP A 460  GLY A 461 -1  O  ASP A 460   N  ARG A 439           
SHEET    1   E 3 PHE A 491  THR A 492  0                                        
SHEET    2   E 3 TYR A 547  SER A 550 -1  N  ILE A 548   O  PHE A 491           
SHEET    3   E 3 LEU A 541  LYS A 543 -1  O  THR A 542   N  HIS A 549           
CISPEP   1 LYS A   21    PRO A   22          0        -0.83                     
CISPEP   2 LEU A   66    PRO A   67          0         1.16                     
CISPEP   3 LEU A  359    PRO A  360          0         0.49                     
SITE     1 AC1  4 ARG A  60  TRP A  61  ARG A 185   DC B 701                    
SITE     1 AC2  3 ARG A  24  PHE A  29  HOH A1028                               
CRYST1  122.011   60.831  125.358  90.00  90.73  90.00 C 1 2 1       4          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.008196  0.000000  0.000104        0.00000                         
SCALE2      0.000000  0.016439  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.007978        0.00000