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Database: PDB
Entry: 1D3Y
LinkDB: 1D3Y
Original site: 1D3Y 
HEADER    ISOMERASE                               01-OCT-99   1D3Y              
TITLE     STRUCTURE OF THE DNA TOPOISOMERASE VI A SUBUNIT                       
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: DNA TOPOISOMERASE VI A SUBUNIT;                            
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 FRAGMENT: DNA BINDING CORE;                                          
COMPND   5 EC: 5.99.1.3;                                                        
COMPND   6 ENGINEERED: YES;                                                     
COMPND   7 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: METHANOCALDOCOCCUS JANNASCHII;                  
SOURCE   3 ORGANISM_TAXID: 2190;                                                
SOURCE   4 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   5 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   6 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE   7 EXPRESSION_SYSTEM_PLASMID: PET24B                                    
KEYWDS    TOPOISOMERASE VI, DNA BINDING PROTEIN, SPO11 HOMOLOG, ISOMERASE       
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    M.D.NICHOLS,K.A.DEANGELIS,J.L.KECK,J.M.BERGER                         
REVDAT   4   07-FEB-24 1D3Y    1       REMARK SHEET  LINK                       
REVDAT   3   24-FEB-09 1D3Y    1       VERSN                                    
REVDAT   2   01-APR-03 1D3Y    1       JRNL                                     
REVDAT   1   05-NOV-99 1D3Y    0                                                
JRNL        AUTH   M.D.NICHOLS,K.DEANGELIS,J.L.KECK,J.M.BERGER                  
JRNL        TITL   STRUCTURE AND FUNCTION OF AN ARCHAEAL TOPOISOMERASE VI       
JRNL        TITL 2 SUBUNIT WITH HOMOLOGY TO THE MEIOTIC RECOMBINATION FACTOR    
JRNL        TITL 3 SPO11.                                                       
JRNL        REF    EMBO J.                       V.  18  6177 1999              
JRNL        REFN                   ISSN 0261-4189                               
JRNL        PMID   10545127                                                     
JRNL        DOI    10.1093/EMBOJ/18.21.6177                                     
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.00 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC                                               
REMARK   3   AUTHORS     : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER,              
REMARK   3               : NICHOLLS,WINN,LONG,VAGIN                             
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.00                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 20.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : NULL                           
REMARK   3   NUMBER OF REFLECTIONS             : 43761                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : NULL                            
REMARK   3   FREE R VALUE TEST SET SELECTION  : NULL                            
REMARK   3   R VALUE     (WORKING + TEST SET) : NULL                            
REMARK   3   R VALUE            (WORKING SET) : 0.197                           
REMARK   3   FREE R VALUE                     : 0.242                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : NULL                            
REMARK   3   FREE R VALUE TEST SET COUNT      : 3653                            
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 4648                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 5                                       
REMARK   3   SOLVENT ATOMS            : 326                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 19.40                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : NULL                           
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : NULL                                                 
REMARK   3    B22 (A**2) : NULL                                                 
REMARK   3    B33 (A**2) : NULL                                                 
REMARK   3    B12 (A**2) : NULL                                                 
REMARK   3    B13 (A**2) : NULL                                                 
REMARK   3    B23 (A**2) : NULL                                                 
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): NULL          
REMARK   3   ESU BASED ON FREE R VALUE                       (A): NULL          
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): NULL          
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): NULL          
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   DISTANCE RESTRAINTS.                    RMS    SIGMA               
REMARK   3    BOND LENGTH                     (A) : NULL  ; NULL                
REMARK   3    ANGLE DISTANCE                  (A) : NULL  ; NULL                
REMARK   3    INTRAPLANAR 1-4 DISTANCE        (A) : NULL  ; NULL                
REMARK   3    H-BOND OR METAL COORDINATION    (A) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3   PLANE RESTRAINT                  (A) : NULL  ; NULL                
REMARK   3   CHIRAL-CENTER RESTRAINT       (A**3) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3   NON-BONDED CONTACT RESTRAINTS.                                     
REMARK   3    SINGLE TORSION                  (A) : NULL  ; NULL                
REMARK   3    MULTIPLE TORSION                (A) : NULL  ; NULL                
REMARK   3    H-BOND (X...Y)                  (A) : NULL  ; NULL                
REMARK   3    H-BOND (X-H...Y)                (A) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3   CONFORMATIONAL TORSION ANGLE RESTRAINTS.                           
REMARK   3    SPECIFIED                 (DEGREES) : NULL  ; NULL                
REMARK   3    PLANAR                    (DEGREES) : NULL  ; NULL                
REMARK   3    STAGGERED                 (DEGREES) : NULL  ; NULL                
REMARK   3    TRANSVERSE                (DEGREES) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1D3Y COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 05-OCT-99.                  
REMARK 100 THE DEPOSITION ID IS D_1000009772.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : NULL                               
REMARK 200  TEMPERATURE           (KELVIN) : 110                                
REMARK 200  PH                             : 6.1                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : N                                  
REMARK 200  RADIATION SOURCE               : ROTATING ANODE                     
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : RIGAKU RU200                       
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.54                               
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : RIGAKU RAXIS IIC                   
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 43773                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.000                              
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     (%) : 96.5                               
REMARK 200  DATA REDUNDANCY                : 8.800                              
REMARK 200  R MERGE                    (I) : 0.03600                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 17.8000                            
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     (%) : 93.6                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.13100                            
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: NULL                         
REMARK 200 SOFTWARE USED: SHARP                                                 
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 50.90                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.50                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 8000, MPD, NA-CACODYLATE, MGCL2,     
REMARK 280  NACL, PH 6.1, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 293K       
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 21 1                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,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       29.52000            
REMARK 290   SMTRY3   2  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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 4700 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 23920 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -53.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B                                  
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 465                                                                      
REMARK 465 MISSING RESIDUES                                                     
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                       
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                
REMARK 465                                                                      
REMARK 465   M RES C SSSEQI                                                     
REMARK 465     THR A    69                                                      
REMARK 465     VAL A    70                                                      
REMARK 465     ASN A    71                                                      
REMARK 465     GLY A   265                                                      
REMARK 465     SER A   266                                                      
REMARK 465     GLY A   267                                                      
REMARK 465     LYS A   268                                                      
REMARK 465     ALA A   269                                                      
REMARK 465     ILE A   270                                                      
REMARK 465     HIS A   271                                                      
REMARK 465     LEU A   272                                                      
REMARK 465     ALA A   273                                                      
REMARK 465     THR B    69                                                      
REMARK 465     VAL B    70                                                      
REMARK 465     SER B   266                                                      
REMARK 465     GLY B   267                                                      
REMARK 465     LYS B   268                                                      
REMARK 465     ALA B   269                                                      
REMARK 465     ILE B   270                                                      
REMARK 465     HIS B   271                                                      
REMARK 465     LEU B   272                                                      
REMARK 465     ALA B   273                                                      
REMARK 465     ASP B   274                                                      
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND ANGLES                                       
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1)              
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   ATM2   ATM3                                     
REMARK 500    ARG A 231   CD  -  NE  -  CZ  ANGL. DEV. =  19.8 DEGREES          
REMARK 500    ARG A 231   NE  -  CZ  -  NH1 ANGL. DEV. =  -3.2 DEGREES          
REMARK 500    ARG A 231   NE  -  CZ  -  NH2 ANGL. DEV. =   3.4 DEGREES          
REMARK 500    GLY A 285   CA  -  C   -  N   ANGL. DEV. =  21.2 DEGREES          
REMARK 500    GLY A 285   O   -  C   -  N   ANGL. DEV. = -20.6 DEGREES          
REMARK 500    ARG B 230   CD  -  NE  -  CZ  ANGL. DEV. =   8.4 DEGREES          
REMARK 500    ARG B 231   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.1 DEGREES          
REMARK 500    GLY B 285   CA  -  C   -  N   ANGL. DEV. =  15.5 DEGREES          
REMARK 500    GLY B 285   O   -  C   -  N   ANGL. DEV. = -18.5 DEGREES          
REMARK 500    PRO B 369   C   -  N   -  CD  ANGL. DEV. =  13.3 DEGREES          
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    SER A 146     -151.74    -90.54                                   
REMARK 500    PRO A 151       85.53    -66.76                                   
REMARK 500    ASN A 257      -53.44   -121.72                                   
REMARK 500    THR A 355      -59.91   -122.52                                   
REMARK 500    SER B 146     -152.63    -91.39                                   
REMARK 500    PRO B 151       88.52    -69.44                                   
REMARK 500    ASN B 257      -52.74   -123.45                                   
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                              MG A 371  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLU A 197   OE2                                                    
REMARK 620 2 ASP A 249   OD2  89.1                                              
REMARK 620 3 HOH A 381   O    89.6  98.1                                        
REMARK 620 4 HOH A 399   O    95.7 169.3  91.5                                  
REMARK 620 5 HOH A 463   O    93.0  83.2 177.2  87.0                            
REMARK 620 6 HOH A 511   O   172.5  91.7  83.0  84.7  94.5                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG A 372  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HOH A 394   O                                                      
REMARK 620 2 HOH A 426   O    84.0                                              
REMARK 620 3 HOH A 490   O    91.4  92.3                                        
REMARK 620 4 HOH B 376   O    91.3 175.3  87.7                                  
REMARK 620 5 HOH B 379   O    95.9  91.8 172.0  88.8                            
REMARK 620 6 HOH B 451   O   172.7  89.8  85.1  94.9  88.0                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG B 374  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLU B 197   OE2                                                    
REMARK 620 2 ASP B 249   OD2  92.1                                              
REMARK 620 3 HOH B 413   O   169.9  92.5                                        
REMARK 620 4 HOH B 417   O    87.6  98.4  82.8                                  
REMARK 620 5 HOH B 426   O    96.0  82.8  93.6 176.2                            
REMARK 620 6 HOH B 501   O    93.7 168.1  83.6  92.2  86.2                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NA A 370                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 371                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 372                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NA B 373                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG B 374                  
DBREF  1D3Y A   69   369  UNP    Q57815   TOP6A_METJA     69    369             
DBREF  1D3Y B   69   369  UNP    Q57815   TOP6A_METJA     69    369             
SEQRES   1 A  301  THR VAL ASN GLN ALA LYS ILE PHE ALA GLN THR THR LYS          
SEQRES   2 A  301  MET LEU GLU PHE ALA LYS GLN LEU LEU GLU THR ASP ASP          
SEQRES   3 A  301  PHE SER THR LEU ARG GLU ALA TYR TYR VAL SER LYS ASN          
SEQRES   4 A  301  TRP GLY GLU ALA ARG PHE ASP ASP GLN GLN ALA SER ASN          
SEQRES   5 A  301  ASN VAL ILE GLU ASP LEU GLU ALA ALA LEU GLY VAL LEU          
SEQRES   6 A  301  ARG GLU HIS LEU GLY PHE ILE PRO GLU GLU ASP GLY SER          
SEQRES   7 A  301  SER VAL VAL GLY PRO LEU LYS ILE ILE GLU GLU THR PRO          
SEQRES   8 A  301  GLU GLY GLU LEU VAL VAL ASP CYS THR LYS LEU GLY THR          
SEQRES   9 A  301  GLY ALA TYR ASN ILE PRO ASN ASP VAL THR LYS LEU ASN          
SEQRES  10 A  301  LEU GLU THR ASP ALA ASP PHE ILE LEU ALA ILE GLU THR          
SEQRES  11 A  301  SER GLY MET PHE ALA ARG LEU ASN ALA GLU ARG PHE TRP          
SEQRES  12 A  301  ASP LYS HIS ASN CYS ILE LEU VAL SER LEU LYS GLY VAL          
SEQRES  13 A  301  PRO ALA ARG ALA THR ARG ARG PHE ILE LYS ARG LEU HIS          
SEQRES  14 A  301  GLU GLU HIS ASP LEU PRO VAL LEU VAL PHE THR ASP GLY          
SEQRES  15 A  301  ASP PRO TYR GLY TYR LEU ASN ILE TYR ARG THR LEU LYS          
SEQRES  16 A  301  VAL GLY SER GLY LYS ALA ILE HIS LEU ALA ASP LYS LEU          
SEQRES  17 A  301  SER ILE PRO ALA ALA ARG LEU ILE GLY VAL THR PRO GLN          
SEQRES  18 A  301  ASP ILE ILE ASP TYR ASP LEU PRO THR HIS PRO LEU LYS          
SEQRES  19 A  301  GLU GLN ASP ILE LYS ARG ILE LYS ASP GLY LEU LYS ASN          
SEQRES  20 A  301  ASP ASP PHE VAL ARG SER PHE PRO GLU TRP GLN LYS ALA          
SEQRES  21 A  301  LEU LYS GLN MET LEU ASP MET GLY VAL ARG ALA GLU GLN          
SEQRES  22 A  301  GLN SER LEU ALA LYS TYR GLY LEU LYS TYR VAL VAL ASN          
SEQRES  23 A  301  THR TYR LEU PRO GLU LYS ILE LYS ASP GLU SER THR TRP          
SEQRES  24 A  301  LEU PRO                                                      
SEQRES   1 B  301  THR VAL ASN GLN ALA LYS ILE PHE ALA GLN THR THR LYS          
SEQRES   2 B  301  MET LEU GLU PHE ALA LYS GLN LEU LEU GLU THR ASP ASP          
SEQRES   3 B  301  PHE SER THR LEU ARG GLU ALA TYR TYR VAL SER LYS ASN          
SEQRES   4 B  301  TRP GLY GLU ALA ARG PHE ASP ASP GLN GLN ALA SER ASN          
SEQRES   5 B  301  ASN VAL ILE GLU ASP LEU GLU ALA ALA LEU GLY VAL LEU          
SEQRES   6 B  301  ARG GLU HIS LEU GLY PHE ILE PRO GLU GLU ASP GLY SER          
SEQRES   7 B  301  SER VAL VAL GLY PRO LEU LYS ILE ILE GLU GLU THR PRO          
SEQRES   8 B  301  GLU GLY GLU LEU VAL VAL ASP CYS THR LYS LEU GLY THR          
SEQRES   9 B  301  GLY ALA TYR ASN ILE PRO ASN ASP VAL THR LYS LEU ASN          
SEQRES  10 B  301  LEU GLU THR ASP ALA ASP PHE ILE LEU ALA ILE GLU THR          
SEQRES  11 B  301  SER GLY MET PHE ALA ARG LEU ASN ALA GLU ARG PHE TRP          
SEQRES  12 B  301  ASP LYS HIS ASN CYS ILE LEU VAL SER LEU LYS GLY VAL          
SEQRES  13 B  301  PRO ALA ARG ALA THR ARG ARG PHE ILE LYS ARG LEU HIS          
SEQRES  14 B  301  GLU GLU HIS ASP LEU PRO VAL LEU VAL PHE THR ASP GLY          
SEQRES  15 B  301  ASP PRO TYR GLY TYR LEU ASN ILE TYR ARG THR LEU LYS          
SEQRES  16 B  301  VAL GLY SER GLY LYS ALA ILE HIS LEU ALA ASP LYS LEU          
SEQRES  17 B  301  SER ILE PRO ALA ALA ARG LEU ILE GLY VAL THR PRO GLN          
SEQRES  18 B  301  ASP ILE ILE ASP TYR ASP LEU PRO THR HIS PRO LEU LYS          
SEQRES  19 B  301  GLU GLN ASP ILE LYS ARG ILE LYS ASP GLY LEU LYS ASN          
SEQRES  20 B  301  ASP ASP PHE VAL ARG SER PHE PRO GLU TRP GLN LYS ALA          
SEQRES  21 B  301  LEU LYS GLN MET LEU ASP MET GLY VAL ARG ALA GLU GLN          
SEQRES  22 B  301  GLN SER LEU ALA LYS TYR GLY LEU LYS TYR VAL VAL ASN          
SEQRES  23 B  301  THR TYR LEU PRO GLU LYS ILE LYS ASP GLU SER THR TRP          
SEQRES  24 B  301  LEU PRO                                                      
HET     NA  A 370       1                                                       
HET     MG  A 371       1                                                       
HET     MG  A 372       1                                                       
HET     NA  B 373       1                                                       
HET     MG  B 374       1                                                       
HETNAM      NA SODIUM ION                                                       
HETNAM      MG MAGNESIUM ION                                                    
FORMUL   3   NA    2(NA 1+)                                                     
FORMUL   4   MG    3(MG 2+)                                                     
FORMUL   8  HOH   *326(H2 O)                                                    
HELIX    1   1 GLN A   72  THR A   92  1                                  21    
HELIX    2   2 LEU A   98  SER A  105  1                                   8    
HELIX    3   3 LYS A  106  ARG A  112  5                                   7    
HELIX    4   4 ASP A  115  GLY A  131  1                                  17    
HELIX    5   5 LEU A  133  LEU A  137  5                                   5    
HELIX    6   6 THR A  198  GLU A  208  1                                  11    
HELIX    7   7 ARG A  209  HIS A  214  1                                   6    
HELIX    8   8 ALA A  226  ASP A  241  1                                  16    
HELIX    9   9 ASP A  251  ASN A  257  1                                   7    
HELIX   10  10 ASN A  257  VAL A  264  1                                   8    
HELIX   11  11 THR A  287  TYR A  294  1                                   8    
HELIX   12  12 LYS A  302  ASP A  316  1                                  15    
HELIX   13  13 ASP A  316  SER A  321  1                                   6    
HELIX   14  14 PHE A  322  GLY A  336  1                                  15    
HELIX   15  15 GLU A  340  GLY A  348  5                                   9    
HELIX   16  16 LYS A  350  THR A  355  1                                   6    
HELIX   17  17 THR A  355  ASP A  363  1                                   9    
HELIX   18  18 GLU A  364  TRP A  367  5                                   4    
SHEET    1   A 2 SER A  96  THR A  97  0                                        
SHEET    2   A 2 PHE A 139  ILE A 140  1  N  ILE A 140   O  SER A  96           
SHEET    1   B 6 ARG A 282  GLY A 285  0                                        
SHEET    2   B 6 VAL A 244  PHE A 247  1  O  VAL A 244   N  ARG A 282           
SHEET    3   B 6 PHE A 192  ILE A 196  1  O  ILE A 193   N  LEU A 245           
SHEET    4   B 6 CYS A 216  SER A 220  1  O  ILE A 217   N  LEU A 194           
SHEET    5   B 6 SER A 147  VAL A 149 -1  O  SER A 147   N  SER A 220           
SHEET    6   B 6 ALA A 174  ASN A 176 -1  N  TYR A 175   O  VAL A 148           
SHEET    1   C 3 GLY A 161  ASP A 166  0                                        
SHEET    2   C 3 LYS A 153  THR A 158 -1  N  ILE A 154   O  VAL A 165           
SHEET    3   C 3 ASN A 185  GLU A 187 -1  O  ASN A 185   N  ILE A 155           
SHEET    1   D 2 HIS A 299  PRO A 300  0                                        
SHEET    2   D 2 VAL A 337  ARG A 338 -1  N  ARG A 338   O  HIS A 299           
LINK         OE2 GLU A 197                MG    MG A 371     1555   1555  2.01  
LINK         OD2 ASP A 249                MG    MG A 371     1555   1555  2.11  
LINK        MG    MG A 371                 O   HOH A 381     1555   1555  2.21  
LINK        MG    MG A 371                 O   HOH A 399     1555   1555  2.24  
LINK        MG    MG A 371                 O   HOH A 463     1555   1555  2.23  
LINK        MG    MG A 371                 O   HOH A 511     1555   1555  2.15  
LINK        MG    MG A 372                 O   HOH A 394     1555   1555  2.13  
LINK        MG    MG A 372                 O   HOH A 426     1555   1555  2.33  
LINK        MG    MG A 372                 O   HOH A 490     1555   1555  2.17  
LINK        MG    MG A 372                 O   HOH B 376     1555   1555  2.19  
LINK        MG    MG A 372                 O   HOH B 379     1555   1555  2.10  
LINK        MG    MG A 372                 O   HOH B 451     1555   1555  2.19  
LINK         OE2 GLU B 197                MG    MG B 374     1555   1555  1.97  
LINK         OD2 ASP B 249                MG    MG B 374     1555   1555  2.06  
LINK        MG    MG B 374                 O   HOH B 413     1555   1555  2.20  
LINK        MG    MG B 374                 O   HOH B 417     1555   1555  2.21  
LINK        MG    MG B 374                 O   HOH B 426     1555   1555  2.08  
LINK        MG    MG B 374                 O   HOH B 501     1555   1555  2.23  
CISPEP   1 GLY A  285    VAL A  286          0        -9.24                     
CISPEP   2 GLY B  285    VAL B  286          0       -25.57                     
SITE     1 AC1  3 LYS A  74  GLN A  78  ASP A 114                               
SITE     1 AC2  6 GLU A 197  ASP A 249  HOH A 381  HOH A 399                    
SITE     2 AC2  6 HOH A 463  HOH A 511                                          
SITE     1 AC3  6 HOH A 394  HOH A 426  HOH A 490  HOH B 376                    
SITE     2 AC3  6 HOH B 379  HOH B 451                                          
SITE     1 AC4  3 LYS B  74  GLN B  78  ASP B 114                               
SITE     1 AC5  6 GLU B 197  ASP B 249  HOH B 413  HOH B 417                    
SITE     2 AC5  6 HOH B 426  HOH B 501                                          
CRYST1   66.510   59.040   87.260  90.00  94.05  90.00 P 1 21 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      0.015035  0.000000  0.001065        0.00000                         
SCALE2      0.000000  0.016938  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.011489        0.00000                         
(ATOM LINES ARE NOT SHOWN.)
END                                                                             
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