HEADER    LYASE/DNA                               13-NOV-99   1DE9              
TITLE     HUMAN APE1 ENDONUCLEASE WITH BOUND ABASIC DNA AND MN2+ ION            
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: 5'-D(*CP*TP*AP*C)-3';                                      
COMPND   3 CHAIN: X, U;                                                         
COMPND   4 ENGINEERED: YES;                                                     
COMPND   5 MOL_ID: 2;                                                           
COMPND   6 MOLECULE: 5'-D(P*(3DR)P*GP*AP*TP*C)-3';                              
COMPND   7 CHAIN: Y, V;                                                         
COMPND   8 ENGINEERED: YES;                                                     
COMPND   9 MOL_ID: 3;                                                           
COMPND  10 MOLECULE: 5'-D(*GP*AP*TP*CP*GP*GP*TP*AP*G)-3';                       
COMPND  11 CHAIN: Z, W;                                                         
COMPND  12 ENGINEERED: YES;                                                     
COMPND  13 MOL_ID: 4;                                                           
COMPND  14 MOLECULE: MAJOR APURINIC/APYRIMIDINIC ENDONUCLEASE;                  
COMPND  15 CHAIN: A, B;                                                         
COMPND  16 FRAGMENT: APE1;                                                      
COMPND  17 SYNONYM: APE1;                                                       
COMPND  18 EC: 4.2.99.18;                                                       
COMPND  19 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 SYNTHETIC: YES;                                                      
SOURCE   3 MOL_ID: 2;                                                           
SOURCE   4 SYNTHETIC: YES;                                                      
SOURCE   5 MOL_ID: 3;                                                           
SOURCE   6 SYNTHETIC: YES;                                                      
SOURCE   7 MOL_ID: 4;                                                           
SOURCE   8 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   9 ORGANISM_COMMON: HUMAN;                                              
SOURCE  10 ORGANISM_TAXID: 9606;                                                
SOURCE  11 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE  12 EXPRESSION_SYSTEM_TAXID: 562                                         
KEYWDS    ENZYME:DNA COMPLEX, DNA REPAIR ABASIC SITE, AP ENDONUCLEASE, LYASE-   
KEYWDS   2 DNA COMPLEX                                                          
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    C.D.MOL,T.IZUMI,S.MITRA,J.A.TAINER                                    
REVDAT   5   07-FEB-24 1DE9    1       REMARK LINK                              
REVDAT   4   24-FEB-09 1DE9    1       VERSN                                    
REVDAT   3   30-MAR-04 1DE9    1       HELIX  COMPND JRNL   REMARK              
REVDAT   2   01-APR-03 1DE9    1       JRNL                                     
REVDAT   1   02-FEB-00 1DE9    0                                                
JRNL        AUTH   C.D.MOL,T.IZUMI,S.MITRA,J.A.TAINER                           
JRNL        TITL   DNA-BOUND STRUCTURES AND MUTANTS REVEAL ABASIC DNA BINDING   
JRNL        TITL 2 BY APE1 AND DNA REPAIR COORDINATION                          
JRNL        REF    NATURE                        V. 403   451 2000              
JRNL        REFN                   ISSN 0028-0836                               
JRNL        PMID   10667800                                                     
JRNL        DOI    10.1038/35000249                                             
REMARK   2                                                                      
REMARK   2 RESOLUTION.    3.00 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : X-PLOR 3.851                                         
REMARK   3   AUTHORS     : BRUNGER                                              
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 3.00                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 20.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 3.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : NULL                           
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : NULL                           
REMARK   3   NUMBER OF REFLECTIONS             : 12390                          
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) : 0.183                           
REMARK   3   FREE R VALUE                     : 0.274                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 10.000                          
REMARK   3   FREE R VALUE TEST SET COUNT      : 1376                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : NULL                            
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : NULL                         
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : NULL                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : NULL                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : NULL                         
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : NULL                         
REMARK   3   BIN R VALUE           (WORKING SET) : NULL                         
REMARK   3   BIN FREE R VALUE                    : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : NULL                         
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : NULL                         
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 4374                                    
REMARK   3   NUCLEIC ACID ATOMS       : 712                                     
REMARK   3   HETEROGEN ATOMS          : 2                                       
REMARK   3   SOLVENT ATOMS            : 0                                       
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 59.00                          
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 COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : NULL                            
REMARK   3   ESD FROM SIGMAA              (A) : NULL                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : NULL                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : NULL                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : NULL                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.007                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.354                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : NULL                            
REMARK   3   IMPROPER ANGLES        (DEGREES) : NULL                            
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : 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  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  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS:                                           
REMARK   3  THE EXACT CONFORMATION AND BASE-PAIRING OF THE DNA IS STRINGLY AN   
REMARK   3  ARTIFACT OF                                                         
REMARK   3  THE CRYSTAL PACKING. THE DNA PHOSPHODIESTER BACKBONE CLOSELY        
REMARK   3  RESEMBLES THAT OF                                                   
REMARK   3  THE UNCLEAVED COMPLEX, 1DE8                                         
REMARK   4                                                                      
REMARK   4 1DE9 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 18-NOV-99.                  
REMARK 100 THE DEPOSITION ID IS D_1000010014.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 21-MAY-99                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 7.0                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : SSRL                               
REMARK 200  BEAMLINE                       : BL9-1                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.98                               
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : MARRESEARCH                        
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 17008                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 3.000                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 20.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 1.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 91.0                               
REMARK 200  DATA REDUNDANCY                : 2.450                              
REMARK 200  R MERGE                    (I) : 0.08600                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 8.6000                             
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 3.00                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 3.11                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 92.4                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 2.40                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.42400                            
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: AMORE                                                 
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 59.61                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.04                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: MPEG 2000, LITHIUM SULFATE, MANGANESE    
REMARK 280  CHLORIDE, PH 7.0, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 298K   
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21                       
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X+1/2,-Y,Z+1/2                                         
REMARK 290       3555   -X,Y+1/2,-Z+1/2                                         
REMARK 290       4555   X+1/2,-Y+1/2,-Z                                         
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000       45.03000            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       50.52500            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       49.17500            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       50.52500            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       45.03000            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       49.17500            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1, 2                                                    
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: TETRAMERIC                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: X, Y, Z, A                            
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 2                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: TETRAMERIC                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: U, V, W, 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 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     LYS A 125    CG   CD   CE   NZ                                   
REMARK 470     GLU A 216    CG   CD   OE1  OE2                                  
REMARK 470     LYS A 224    CG   CD   CE   NZ                                   
REMARK 470     LYS B 125    CG   CD   CE   NZ                                   
REMARK 470     GLU B 216    CG   CD   OE1  OE2                                  
REMARK 470     LYS B 224    CG   CD   CE   NZ                                   
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     DG V   7   O4' -  C1' -  N9  ANGL. DEV. =   1.8 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    LEU A  44      -82.16    -67.80                                   
REMARK 500    ALA A  88       65.36     30.59                                   
REMARK 500    SER A 100       31.42    -86.63                                   
REMARK 500    GLU A 110       41.76    -94.45                                   
REMARK 500    LEU A 114       45.15   -143.00                                   
REMARK 500    SER A 120      112.52   -161.79                                   
REMARK 500    ASP A 124       73.88   -151.37                                   
REMARK 500    LYS A 125      111.07   -175.30                                   
REMARK 500    SER A 129     -140.94     36.21                                   
REMARK 500    PHE A 162     -155.21   -113.72                                   
REMARK 500    ASN A 212       60.55     37.88                                   
REMARK 500    VAL A 213      128.59   -179.31                                   
REMARK 500    HIS A 215      -76.20    -44.40                                   
REMARK 500    PHE A 232       32.85   -144.71                                   
REMARK 500    ASP A 297      147.66   -174.02                                   
REMARK 500    LYS B  52       31.09    -99.24                                   
REMARK 500    ALA B  88       72.06     19.50                                   
REMARK 500    ASN B 102        0.37     83.33                                   
REMARK 500    LEU B 114       53.22   -153.21                                   
REMARK 500    SER B 129     -140.66     53.32                                   
REMARK 500    ASP B 152       36.44    -88.64                                   
REMARK 500    VAL B 213      138.48   -172.89                                   
REMARK 500    HIS B 215      -81.41    -48.27                                   
REMARK 500    GLU B 217       -7.94    -58.21                                   
REMARK 500    PHE B 232       23.05   -140.16                                   
REMARK 500    MET B 271       50.56     37.57                                   
REMARK 500    ASN B 272       48.87     35.07                                   
REMARK 500    VAL B 278       76.73   -102.87                                   
REMARK 500    ASP B 297      146.38    175.55                                   
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 W  20         0.06    SIDE CHAIN                              
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                              MN A1000  MN                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1  DC X   5   O3'                                                    
REMARK 620 2 3DR Y   6   OP1  72.9                                              
REMARK 620 3 GLU A  96   OE1  79.3 127.2                                        
REMARK 620 4 GLU A  96   OE2  87.2  84.5  49.8                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MN B1001  MN                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1  DC U   5   O3'                                                    
REMARK 620 2 3DR V   6   OP1  76.6                                              
REMARK 620 3 GLU B  96   OE2  60.0  91.7                                        
REMARK 620 4 GLU B  96   OE1  79.6 142.8  51.5                                  
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 MN A 1000                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MN B 1001                 
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1BIX   RELATED DB: PDB                                   
REMARK 900 HUMAN APE1 IN UNBOUND FORM                                           
REMARK 900 RELATED ID: 1DE8   RELATED DB: PDB                                   
REMARK 900 HUMAN APE1:DNA COMPLEX                                               
DBREF  1DE9 A   43   318  UNP    P27695   APEX1_HUMAN     42    317             
DBREF  1DE9 B   43   318  UNP    P27695   APEX1_HUMAN     42    317             
DBREF  1DE9 X    2     5  PDB    1DE9     1DE9             2      5             
DBREF  1DE9 Y    6    10  PDB    1DE9     1DE9             6     10             
DBREF  1DE9 Z   13    21  PDB    1DE9     1DE9            13     21             
DBREF  1DE9 U    2     5  PDB    1DE9     1DE9             2      5             
DBREF  1DE9 V    6    10  PDB    1DE9     1DE9             6     10             
DBREF  1DE9 W   13    21  PDB    1DE9     1DE9            13     21             
SEQRES   1 X    4   DC  DT  DA  DC                                              
SEQRES   1 Y    5  3DR  DG  DA  DT  DC                                          
SEQRES   1 Z    9   DG  DA  DT  DC  DG  DG  DT  DA  DG                          
SEQRES   1 U    4   DC  DT  DA  DC                                              
SEQRES   1 V    5  3DR  DG  DA  DT  DC                                          
SEQRES   1 W    9   DG  DA  DT  DC  DG  DG  DT  DA  DG                          
SEQRES   1 A  276  ALA LEU TYR GLU ASP PRO PRO ASP HIS LYS THR SER PRO          
SEQRES   2 A  276  SER GLY LYS PRO ALA THR LEU LYS ILE CYS SER TRP ASN          
SEQRES   3 A  276  VAL ASP GLY LEU ARG ALA TRP ILE LYS LYS LYS GLY LEU          
SEQRES   4 A  276  ASP TRP VAL LYS GLU GLU ALA PRO ASP ILE LEU CYS LEU          
SEQRES   5 A  276  GLN GLU THR LYS CYS SER GLU ASN LYS LEU PRO ALA GLU          
SEQRES   6 A  276  LEU GLN GLU LEU PRO GLY LEU SER HIS GLN TYR TRP SER          
SEQRES   7 A  276  ALA PRO SER ASP LYS GLU GLY TYR SER GLY VAL GLY LEU          
SEQRES   8 A  276  LEU SER ARG GLN CYS PRO LEU LYS VAL SER TYR GLY ILE          
SEQRES   9 A  276  GLY ASP GLU GLU HIS ASP GLN GLU GLY ARG VAL ILE VAL          
SEQRES  10 A  276  ALA GLU PHE ASP SER PHE VAL LEU VAL THR ALA TYR VAL          
SEQRES  11 A  276  PRO ASN ALA GLY ARG GLY LEU VAL ARG LEU GLU TYR ARG          
SEQRES  12 A  276  GLN ARG TRP ASP GLU ALA PHE ARG LYS PHE LEU LYS GLY          
SEQRES  13 A  276  LEU ALA SER ARG LYS PRO LEU VAL LEU CYS GLY ASP LEU          
SEQRES  14 A  276  ASN VAL ALA HIS GLU GLU ILE ASP LEU ARG ASN PRO LYS          
SEQRES  15 A  276  GLY ASN LYS LYS ASN ALA GLY PHE THR PRO GLN GLU ARG          
SEQRES  16 A  276  GLN GLY PHE GLY GLU LEU LEU GLN ALA VAL PRO LEU ALA          
SEQRES  17 A  276  ASP SER PHE ARG HIS LEU TYR PRO ASN THR PRO TYR ALA          
SEQRES  18 A  276  TYR THR PHE TRP THR TYR MET MET ASN ALA ARG SER LYS          
SEQRES  19 A  276  ASN VAL GLY TRP ARG LEU ASP TYR PHE LEU LEU SER HIS          
SEQRES  20 A  276  SER LEU LEU PRO ALA LEU CYS ASP SER LYS ILE ARG SER          
SEQRES  21 A  276  LYS ALA LEU GLY SER ASP HIS CYS PRO ILE THR LEU TYR          
SEQRES  22 A  276  LEU ALA LEU                                                  
SEQRES   1 B  276  ALA LEU TYR GLU ASP PRO PRO ASP HIS LYS THR SER PRO          
SEQRES   2 B  276  SER GLY LYS PRO ALA THR LEU LYS ILE CYS SER TRP ASN          
SEQRES   3 B  276  VAL ASP GLY LEU ARG ALA TRP ILE LYS LYS LYS GLY LEU          
SEQRES   4 B  276  ASP TRP VAL LYS GLU GLU ALA PRO ASP ILE LEU CYS LEU          
SEQRES   5 B  276  GLN GLU THR LYS CYS SER GLU ASN LYS LEU PRO ALA GLU          
SEQRES   6 B  276  LEU GLN GLU LEU PRO GLY LEU SER HIS GLN TYR TRP SER          
SEQRES   7 B  276  ALA PRO SER ASP LYS GLU GLY TYR SER GLY VAL GLY LEU          
SEQRES   8 B  276  LEU SER ARG GLN CYS PRO LEU LYS VAL SER TYR GLY ILE          
SEQRES   9 B  276  GLY ASP GLU GLU HIS ASP GLN GLU GLY ARG VAL ILE VAL          
SEQRES  10 B  276  ALA GLU PHE ASP SER PHE VAL LEU VAL THR ALA TYR VAL          
SEQRES  11 B  276  PRO ASN ALA GLY ARG GLY LEU VAL ARG LEU GLU TYR ARG          
SEQRES  12 B  276  GLN ARG TRP ASP GLU ALA PHE ARG LYS PHE LEU LYS GLY          
SEQRES  13 B  276  LEU ALA SER ARG LYS PRO LEU VAL LEU CYS GLY ASP LEU          
SEQRES  14 B  276  ASN VAL ALA HIS GLU GLU ILE ASP LEU ARG ASN PRO LYS          
SEQRES  15 B  276  GLY ASN LYS LYS ASN ALA GLY PHE THR PRO GLN GLU ARG          
SEQRES  16 B  276  GLN GLY PHE GLY GLU LEU LEU GLN ALA VAL PRO LEU ALA          
SEQRES  17 B  276  ASP SER PHE ARG HIS LEU TYR PRO ASN THR PRO TYR ALA          
SEQRES  18 B  276  TYR THR PHE TRP THR TYR MET MET ASN ALA ARG SER LYS          
SEQRES  19 B  276  ASN VAL GLY TRP ARG LEU ASP TYR PHE LEU LEU SER HIS          
SEQRES  20 B  276  SER LEU LEU PRO ALA LEU CYS ASP SER LYS ILE ARG SER          
SEQRES  21 B  276  LYS ALA LEU GLY SER ASP HIS CYS PRO ILE THR LEU TYR          
SEQRES  22 B  276  LEU ALA LEU                                                  
HET    3DR  Y   6      12                                                       
HET    3DR  V   6      12                                                       
HET     MN  A1000       1                                                       
HET     MN  B1001       1                                                       
HETNAM     3DR 1',2'-DIDEOXYRIBOFURANOSE-5'-PHOSPHATE                           
HETNAM      MN MANGANESE (II) ION                                               
HETSYN     3DR ABASIC DIDEOXYRIBOSE                                             
FORMUL   2  3DR    2(C5 H11 O6 P)                                               
FORMUL   9   MN    2(MN 2+)                                                     
HELIX    1   1 GLY A   71  LYS A   78  1                                   8    
HELIX    2   2 LYS A   79  ALA A   88  1                                  10    
HELIX    3   3 PRO A  105  GLU A  110  5                                   6    
HELIX    4   4 GLY A  176  VAL A  180  5                                   5    
HELIX    5   5 ARG A  181  SER A  201  1                                  21    
HELIX    6   6 GLU A  216  LEU A  220  5                                   5    
HELIX    7   7 PRO A  223  LYS A  227  5                                   5    
HELIX    8   8 THR A  233  VAL A  247  1                                  15    
HELIX    9   9 SER A  252  TYR A  257  1                                   6    
HELIX   10  10 TYR A  269  ASN A  277  5                                   9    
HELIX   11  11 HIS A  289  LEU A  292  5                                   4    
HELIX   12  12 GLY B   71  LYS B   78  1                                   8    
HELIX   13  13 LYS B   79  ALA B   88  1                                  10    
HELIX   14  14 PRO B  105  GLN B  109  5                                   5    
HELIX   15  15 GLY B  176  VAL B  180  5                                   5    
HELIX   16  16 ARG B  181  SER B  201  1                                  21    
HELIX   17  17 LYS B  224  LYS B  228  5                                   5    
HELIX   18  18 THR B  233  VAL B  247  1                                  15    
HELIX   19  19 SER B  252  TYR B  257  1                                   6    
HELIX   20  20 TYR B  269  ALA B  273  5                                   5    
HELIX   21  21 HIS B  289  PRO B  293  5                                   5    
SHEET    1   A 6 HIS A 116  SER A 120  0                                        
SHEET    2   A 6 VAL A 131  SER A 135 -1  N  VAL A 131   O  SER A 120           
SHEET    3   A 6 ILE A  91  GLN A  95 -1  O  LEU A  92   N  LEU A 134           
SHEET    4   A 6 LEU A  62  ASN A  68  1  O  LYS A  63   N  ILE A  91           
SHEET    5   A 6 ILE A 312  LEU A 316 -1  N  ILE A 312   O  SER A  66           
SHEET    6   A 6 LEU A 295  ILE A 300 -1  N  CYS A 296   O  TYR A 315           
SHEET    1   B 6 LYS A 141  TYR A 144  0                                        
SHEET    2   B 6 VAL A 157  GLU A 161 -1  N  VAL A 159   O  SER A 143           
SHEET    3   B 6 VAL A 166  TYR A 171 -1  O  LEU A 167   N  ALA A 160           
SHEET    4   B 6 LEU A 205  ASP A 210  1  O  VAL A 206   N  VAL A 168           
SHEET    5   B 6 ASP A 283  LEU A 287 -1  N  TYR A 284   O  GLY A 209           
SHEET    6   B 6 ALA A 214  ASP A 251 -1  O  ALA A 214   N  LEU A 287           
SHEET    1   C 6 HIS B 116  SER B 120  0                                        
SHEET    2   C 6 VAL B 131  SER B 135 -1  O  VAL B 131   N  SER B 120           
SHEET    3   C 6 ILE B  91  GLN B  95 -1  N  LEU B  92   O  LEU B 134           
SHEET    4   C 6 LEU B  62  ASN B  68  1  O  LYS B  63   N  ILE B  91           
SHEET    5   C 6 ILE B 312  LEU B 316 -1  O  ILE B 312   N  SER B  66           
SHEET    6   C 6 LEU B 295  ILE B 300 -1  N  CYS B 296   O  TYR B 315           
SHEET    1   D 6 LYS B 141  TYR B 144  0                                        
SHEET    2   D 6 VAL B 157  GLU B 161 -1  O  VAL B 159   N  SER B 143           
SHEET    3   D 6 VAL B 166  TYR B 171 -1  O  LEU B 167   N  ALA B 160           
SHEET    4   D 6 LEU B 205  ASP B 210  1  O  VAL B 206   N  VAL B 168           
SHEET    5   D 6 ASP B 283  LEU B 287 -1  N  TYR B 284   O  GLY B 209           
SHEET    6   D 6 ALA B 250  ASP B 251 -1  N  ALA B 250   O  LEU B 287           
LINK         O3' 3DR Y   6                 P    DG Y   7     1555   1555  1.60  
LINK         O3' 3DR V   6                 P    DG V   7     1555   1555  1.61  
LINK         O3'  DC X   5                MN    MN A1000     1555   1555  2.56  
LINK         OP1 3DR Y   6                MN    MN A1000     1555   1555  2.05  
LINK         O3'  DC U   5                MN    MN B1001     1555   1555  2.32  
LINK         OP1 3DR V   6                MN    MN B1001     1555   1555  2.19  
LINK         OE1 GLU A  96                MN    MN A1000     1555   1555  2.66  
LINK         OE2 GLU A  96                MN    MN A1000     1555   1555  2.55  
LINK         OE2 GLU B  96                MN    MN B1001     1555   1555  2.42  
LINK         OE1 GLU B  96                MN    MN B1001     1555   1555  2.60  
CISPEP   1 VAL A  247    PRO A  248          0        -0.15                     
CISPEP   2 VAL B  247    PRO B  248          0        -0.57                     
SITE     1 AC1  4 GLU A  96  ASP A 308   DC X   5  3DR Y   6                    
SITE     1 AC2  4 GLU B  96  ASP B 308   DC U   5  3DR V   6                    
CRYST1   90.060   98.350  101.050  90.00  90.00  90.00 P 21 21 21    8          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.011104  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.010168  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.009896        0.00000