PDB Short entry for 2EA0
HEADER    HYDROLASE/DNA                           29-JAN-07   2EA0              
TITLE     CRYSTAL STRUCTURE OF THE DNA REPAIR ENZYME ENDONUCLEASE-VIII (NEI)    
TITLE    2 FROM E. COLI IN COMPLEX WITH AP-SITE CONTAINING DNA SUBSTRATE        
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: 5'-D(P*GP*GP*CP*TP*TP*CP*AP*TP*CP*CP*TP*G)-3';             
COMPND   3 CHAIN: B;                                                            
COMPND   4 ENGINEERED: YES;                                                     
COMPND   5 MOL_ID: 2;                                                           
COMPND   6 MOLECULE: 5'-D(P*CP*AP*GP*GP*AP*(PED)P*GP*AP*AP*GP*CP*C)-3';         
COMPND   7 CHAIN: C;                                                            
COMPND   8 ENGINEERED: YES;                                                     
COMPND   9 MOL_ID: 3;                                                           
COMPND  10 MOLECULE: ENDONUCLEASE VIII;                                         
COMPND  11 CHAIN: A;                                                            
COMPND  12 SYNONYM: DNA GLYCOSYLASE/AP LYASE NEI, DNA-APURINIC OR APYRIMIDINIC  
COMPND  13 SITE, LYASE NEI;                                                     
COMPND  14 EC: 3.2.2.-, 4.2.99.18;                                              
COMPND  15 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 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI;                               
SOURCE   7 ORGANISM_TAXID: 562;                                                 
SOURCE   8 GENE: NEI;                                                           
SOURCE   9 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE  10 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE  11 EXPRESSION_SYSTEM_STRAIN: B834(DE3);                                 
SOURCE  12 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  13 EXPRESSION_SYSTEM_PLASMID: PET13A                                    
KEYWDS    ENDONUCLEASE VIII, OXIDATIVE DAMAGE, DNA REPAIR, BASE EXCISION,       
KEYWDS   2 COVALENT INTERMEDIATE, REACTION MECHANISM, HYDROLASE-DNA COMPLEX     
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    G.GOLAN,D.O.ZHAROV,A.P.GROLLMAN,G.SHOHAM                              
REVDAT   4   25-OCT-23 2EA0    1       REMARK LINK                              
REVDAT   3   13-JUL-11 2EA0    1       VERSN                                    
REVDAT   2   24-FEB-09 2EA0    1       VERSN                                    
REVDAT   1   26-FEB-08 2EA0    0                                                
JRNL        AUTH   G.GOLAN,D.O.ZHARKOV,A.P.GROLLMAN,G.SHOHAM                    
JRNL        TITL   ACTIVE SITE PLASTICITY OF ENDONUCLEASE VIII: CONFORMATIONAL  
JRNL        TITL 2 CHANGES COMPENSATING FOR DIFFERENT SUBSTRATE AND MUTATIONS   
JRNL        TITL 3 OF CRITICAL RESIDUES                                         
JRNL        REF    TO BE PUBLISHED                                              
JRNL        REFN                                                                
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.40 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : SHELXL-97                                            
REMARK   3   AUTHORS     : G.M.SHELDRICK                                        
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.40                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 30.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 95.8                           
REMARK   3   CROSS-VALIDATION METHOD           : THROUGHOUT                     
REMARK   3   FREE R VALUE TEST SET SELECTION   : RANDOM                         
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT (NO CUTOFF).                         
REMARK   3   R VALUE   (WORKING + TEST SET, NO CUTOFF) : 0.160                  
REMARK   3   R VALUE          (WORKING SET, NO CUTOFF) : 0.156                  
REMARK   3   FREE R VALUE                  (NO CUTOFF) : 0.204                  
REMARK   3   FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : 5.300                  
REMARK   3   FREE R VALUE TEST SET COUNT   (NO CUTOFF) : 4863                   
REMARK   3   TOTAL NUMBER OF REFLECTIONS   (NO CUTOFF) : 91763                  
REMARK   3                                                                      
REMARK   3  FIT/AGREEMENT OF MODEL FOR DATA WITH F>4SIG(F).                     
REMARK   3   R VALUE   (WORKING + TEST SET, F>4SIG(F)) : 0.153                  
REMARK   3   R VALUE          (WORKING SET, F>4SIG(F)) : 0.149                  
REMARK   3   FREE R VALUE                  (F>4SIG(F)) : 0.196                  
REMARK   3   FREE R VALUE TEST SET SIZE (%, F>4SIG(F)) : 5.300                  
REMARK   3   FREE R VALUE TEST SET COUNT   (F>4SIG(F)) : 3707                   
REMARK   3   TOTAL NUMBER OF REFLECTIONS   (F>4SIG(F)) : 70119                  
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS      : 2032                                          
REMARK   3   NUCLEIC ACID ATOMS : 483                                           
REMARK   3   HETEROGEN ATOMS    : 32                                            
REMARK   3   SOLVENT ATOMS      : 412                                           
REMARK   3                                                                      
REMARK   3  MODEL REFINEMENT.                                                   
REMARK   3   OCCUPANCY SUM OF NON-HYDROGEN ATOMS      : 2961.8                  
REMARK   3   OCCUPANCY SUM OF HYDROGEN ATOMS          : 0.00                    
REMARK   3   NUMBER OF DISCRETELY DISORDERED RESIDUES : 15                      
REMARK   3   NUMBER OF LEAST-SQUARES PARAMETERS       : 27164                   
REMARK   3   NUMBER OF RESTRAINTS                     : 33810                   
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM RESTRAINT TARGET VALUES.                        
REMARK   3   BOND LENGTHS                         (A) : 0.014                   
REMARK   3   ANGLE DISTANCES                      (A) : 0.034                   
REMARK   3   SIMILAR DISTANCES (NO TARGET VALUES) (A) : 0.000                   
REMARK   3   DISTANCES FROM RESTRAINT PLANES      (A) : 0.025                   
REMARK   3   ZERO CHIRAL VOLUMES               (A**3) : 0.060                   
REMARK   3   NON-ZERO CHIRAL VOLUMES           (A**3) : 0.076                   
REMARK   3   ANTI-BUMPING DISTANCE RESTRAINTS     (A) : 0.021                   
REMARK   3   RIGID-BOND ADP COMPONENTS         (A**2) : 0.004                   
REMARK   3   SIMILAR ADP COMPONENTS            (A**2) : 0.060                   
REMARK   3   APPROXIMATELY ISOTROPIC ADPS      (A**2) : 0.084                   
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED: NULL                                                  
REMARK   3                                                                      
REMARK   3  STEREOCHEMISTRY TARGET VALUES : ENGH & HUBER                        
REMARK   3   SPECIAL CASE: NULL                                                 
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 2EA0 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 05-FEB-07.                  
REMARK 100 THE DEPOSITION ID IS D_1000026412.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : NULL                               
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 4.6                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : NSLS                               
REMARK 200  BEAMLINE                       : X26C                               
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.100                              
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 4                     
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 91763                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.400                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 30.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : NULL                               
REMARK 200  DATA REDUNDANCY                : 7.000                              
REMARK 200  R MERGE                    (I) : 0.06400                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 11.6000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.40                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.42                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 69.8                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : 0.37500                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: THROUGHOUT                   
REMARK 200 SOFTWARE USED: SHELX                                                 
REMARK 200 STARTING MODEL: 1K3W                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 61.53                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.58                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 1.8M AMMONIUM SULFATE, 0.1M SODIUM       
REMARK 280  ACETATE PH 4.6-5.0, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE      
REMARK 280  293K                                                                
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 43 2 2                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,-Y,Z+1/2                                             
REMARK 290       3555   -Y,X,Z+3/4                                              
REMARK 290       4555   Y,-X,Z+1/4                                              
REMARK 290       5555   -X,Y,-Z                                                 
REMARK 290       6555   X,-Y,-Z+1/2                                             
REMARK 290       7555   Y,X,-Z+1/4                                              
REMARK 290       8555   -Y,-X,-Z+3/4                                            
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       82.27000            
REMARK 290   SMTRY1   3  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000      123.40500            
REMARK 290   SMTRY1   4  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   4 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000  1.000000       41.13500            
REMARK 290   SMTRY1   5 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   5  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   6  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   6  0.000000  0.000000 -1.000000       82.27000            
REMARK 290   SMTRY1   7  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   7  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   7  0.000000  0.000000 -1.000000       41.13500            
REMARK 290   SMTRY1   8  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   8 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   8  0.000000  0.000000 -1.000000      123.40500            
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: TRIMERIC                          
REMARK 350 APPLY THE FOLLOWING TO CHAINS: B, C, 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 375                                                                      
REMARK 375 SPECIAL POSITION                                                     
REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS            
REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL          
REMARK 375 POSITIONS.                                                           
REMARK 375                                                                      
REMARK 375 ATOM RES CSSEQI                                                      
REMARK 375      HOH A 776  LIES ON A SPECIAL POSITION.                          
REMARK 375      HOH A 855  LIES ON A SPECIAL POSITION.                          
REMARK 465                                                                      
REMARK 465 MISSING RESIDUES                                                     
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                       
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                
REMARK 465                                                                      
REMARK 465   M RES C SSSEQI                                                     
REMARK 465     VAL A   215                                                      
REMARK 465     ASP A   216                                                      
REMARK 465     GLU A   217                                                      
REMARK 465     ASN A   218                                                      
REMARK 465     LYS A   219                                                      
REMARK 465     HIS A   220                                                      
REMARK 465     HIS A   221                                                      
REMARK 465     GLY A   222                                                      
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     GLN A  84    CG   CD   OE1  NE2                                  
REMARK 470     GLN A 214    CG   CD   OE1  NE2                                  
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS                                             
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC             
REMARK 500 SYMMETRY ARE IN CLOSE CONTACT.  AN ATOM LOCATED WITHIN 0.15          
REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A           
REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375             
REMARK 500 INSTEAD OF REMARK 500.  ATOMS WITH NON-BLANK ALTERNATE               
REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS.            
REMARK 500                                                                      
REMARK 500 DISTANCE CUTOFF:                                                     
REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS              
REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS                  
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI  SSYMOP   DISTANCE          
REMARK 500   O2    DC C   433     O2    DC C   433     6553     1.69            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS                                      
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,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3)               
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   RES CSSEQI ATM2   DEVIATION                     
REMARK 500     DG B 401   O3'    DG B 402   P       0.219                       
REMARK 500     DG B 402   C4     DG B 402   C5      0.048                       
REMARK 500     DT B 404   C2     DT B 404   N3      0.063                       
REMARK 500     DT B 404   C5     DT B 404   C7      0.109                       
REMARK 500     DT B 405   C2     DT B 405   N3      0.053                       
REMARK 500     DT B 405   C5     DT B 405   C7      0.098                       
REMARK 500     DT B 408   C2     DT B 408   N3      0.052                       
REMARK 500     DT B 408   C5     DT B 408   C7      0.088                       
REMARK 500     DT B 411   C2     DT B 411   N3      0.080                       
REMARK 500     DT B 411   C5     DT B 411   C7      0.099                       
REMARK 500     DG B 412   C4     DG B 412   C5      0.046                       
REMARK 500     DA C 429   O3'    DA C 429   C3'    -0.057                       
REMARK 500     DA C 430   O3'    DG C 431   P      -0.074                       
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
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 B 401   O4' -  C4' -  C3' ANGL. DEV. =  -3.6 DEGREES          
REMARK 500     DG B 401   C4' -  C3' -  C2' ANGL. DEV. =  -5.3 DEGREES          
REMARK 500     DG B 401   O4' -  C1' -  N9  ANGL. DEV. =   3.0 DEGREES          
REMARK 500     DG B 401   C6  -  N1  -  C2  ANGL. DEV. =  -4.6 DEGREES          
REMARK 500     DG B 401   C2  -  N3  -  C4  ANGL. DEV. =   7.2 DEGREES          
REMARK 500     DG B 401   N3  -  C4  -  C5  ANGL. DEV. =  -7.2 DEGREES          
REMARK 500     DG B 401   C5  -  C6  -  N1  ANGL. DEV. =   4.5 DEGREES          
REMARK 500     DG B 401   C5  -  N7  -  C8  ANGL. DEV. =  -6.5 DEGREES          
REMARK 500     DG B 401   N7  -  C8  -  N9  ANGL. DEV. =   9.8 DEGREES          
REMARK 500     DG B 401   C8  -  N9  -  C4  ANGL. DEV. =  -6.8 DEGREES          
REMARK 500     DG B 401   N3  -  C4  -  N9  ANGL. DEV. =   5.0 DEGREES          
REMARK 500     DG B 401   C5  -  C6  -  O6  ANGL. DEV. =  -5.4 DEGREES          
REMARK 500     DG B 401   C8  -  N9  -  C1' ANGL. DEV. =   7.9 DEGREES          
REMARK 500     DG B 401   C3' -  O3' -  P   ANGL. DEV. = -13.8 DEGREES          
REMARK 500     DG B 402   O4' -  C1' -  N9  ANGL. DEV. =  11.7 DEGREES          
REMARK 500     DG B 402   C6  -  N1  -  C2  ANGL. DEV. =  -8.1 DEGREES          
REMARK 500     DG B 402   C2  -  N3  -  C4  ANGL. DEV. =   9.3 DEGREES          
REMARK 500     DG B 402   N3  -  C4  -  C5  ANGL. DEV. = -11.2 DEGREES          
REMARK 500     DG B 402   C5  -  C6  -  N1  ANGL. DEV. =   6.6 DEGREES          
REMARK 500     DG B 402   C5  -  N7  -  C8  ANGL. DEV. =  -6.6 DEGREES          
REMARK 500     DG B 402   N7  -  C8  -  N9  ANGL. DEV. =  10.7 DEGREES          
REMARK 500     DG B 402   C8  -  N9  -  C4  ANGL. DEV. =  -8.0 DEGREES          
REMARK 500     DG B 402   N9  -  C4  -  C5  ANGL. DEV. =   2.7 DEGREES          
REMARK 500     DG B 402   N3  -  C4  -  N9  ANGL. DEV. =   8.5 DEGREES          
REMARK 500     DG B 402   C5  -  C6  -  O6  ANGL. DEV. =  -5.1 DEGREES          
REMARK 500     DG B 402   C3' -  O3' -  P   ANGL. DEV. = -12.7 DEGREES          
REMARK 500     DC B 403   O3' -  P   -  O5' ANGL. DEV. = -19.1 DEGREES          
REMARK 500     DC B 403   O3' -  P   -  OP1 ANGL. DEV. =   7.3 DEGREES          
REMARK 500     DC B 403   O4' -  C1' -  C2' ANGL. DEV. =  -5.2 DEGREES          
REMARK 500     DC B 403   C2  -  N3  -  C4  ANGL. DEV. =   8.1 DEGREES          
REMARK 500     DC B 403   N3  -  C4  -  C5  ANGL. DEV. =  -6.0 DEGREES          
REMARK 500     DC B 403   C5  -  C6  -  N1  ANGL. DEV. =   3.8 DEGREES          
REMARK 500     DC B 403   N3  -  C4  -  N4  ANGL. DEV. =   4.8 DEGREES          
REMARK 500     DT B 404   N1  -  C1' -  C2' ANGL. DEV. =  18.4 DEGREES          
REMARK 500     DT B 404   N1  -  C2  -  N3  ANGL. DEV. =   4.3 DEGREES          
REMARK 500     DT B 404   C2  -  N3  -  C4  ANGL. DEV. =  -5.5 DEGREES          
REMARK 500     DT B 404   C4  -  C5  -  C6  ANGL. DEV. =   5.0 DEGREES          
REMARK 500     DT B 404   N3  -  C2  -  O2  ANGL. DEV. =  -5.0 DEGREES          
REMARK 500     DT B 404   C6  -  C5  -  C7  ANGL. DEV. =  -4.9 DEGREES          
REMARK 500     DT B 405   O4' -  C1' -  N1  ANGL. DEV. =  -6.4 DEGREES          
REMARK 500     DT B 405   C6  -  N1  -  C2  ANGL. DEV. =   5.1 DEGREES          
REMARK 500     DT B 405   C2  -  N3  -  C4  ANGL. DEV. =  -5.3 DEGREES          
REMARK 500     DT B 405   C4  -  C5  -  C6  ANGL. DEV. =   4.0 DEGREES          
REMARK 500     DT B 405   C5  -  C6  -  N1  ANGL. DEV. =  -6.5 DEGREES          
REMARK 500     DT B 405   C6  -  C5  -  C7  ANGL. DEV. =  -6.9 DEGREES          
REMARK 500     DC B 406   O4' -  C1' -  N1  ANGL. DEV. =  -4.4 DEGREES          
REMARK 500     DC B 406   C2  -  N3  -  C4  ANGL. DEV. =   7.4 DEGREES          
REMARK 500     DC B 406   N3  -  C4  -  C5  ANGL. DEV. =  -6.5 DEGREES          
REMARK 500     DC B 406   N3  -  C2  -  O2  ANGL. DEV. =   4.3 DEGREES          
REMARK 500     DC B 406   N3  -  C4  -  N4  ANGL. DEV. =   5.6 DEGREES          
REMARK 500                                                                      
REMARK 500 THIS ENTRY HAS     188 ANGLE DEVIATIONS.                             
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    GLU A   2     -169.61   -102.74                                   
REMARK 500    GLN A  69     -132.33     51.90                                   
REMARK 500    SER A 104      -28.22     74.10                                   
REMARK 500    PHE A 162      -73.85    -84.09                                   
REMARK 500    ASN A 183       55.50    -97.96                                   
REMARK 500    THR A 247     -157.29   -143.20                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 620                                                                      
REMARK 620 METAL COORDINATION                                                   
REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE):                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              ZN A 501  ZN                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS A 237   SG                                                     
REMARK 620 2 CYS A 240   SG  115.6                                              
REMARK 620 3 CYS A 257   SG  105.6  97.0                                        
REMARK 620 4 CYS A 260   SG  106.2 120.1 111.2                                  
REMARK 620 N                    1     2     3                                   
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 501                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 551                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 C 552                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 553                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC6                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 554                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC7                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 555                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC8                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE GOL A 511                 
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 2OPF   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 2OQ4   RELATED DB: PDB                                   
REMARK 999                                                                      
REMARK 999 SEQUENCE                                                             
REMARK 999 SEQUENCING AND CRYSTALLOGRAPHY CONFIRM THE SEQUENCE AS THR A 34 AND  
REMARK 999 ARG A 112.                                                           
DBREF  2EA0 A    1   262  UNP    P50465   END8_ECOLI       2    263             
DBREF  2EA0 B  401   412  PDB    2EA0     2EA0           401    412             
DBREF  2EA0 C  422   433  PDB    2EA0     2EA0           422    433             
SEQADV 2EA0 THR A   34  UNP  P50465    PRO    35 SEE REMARK 999                 
SEQADV 2EA0 ARG A  112  UNP  P50465    THR   113 SEE REMARK 999                 
SEQRES   1 B   12   DG  DG  DC  DT  DT  DC  DA  DT  DC  DC  DT  DG              
SEQRES   1 C   12   DC  DA  DG  DG  DA PED  DG  DA  DA  DG  DC  DC              
SEQRES   1 A  262  PRO GLU GLY PRO GLU ILE ARG ARG ALA ALA ASP ASN LEU          
SEQRES   2 A  262  GLU ALA ALA ILE LYS GLY LYS PRO LEU THR ASP VAL TRP          
SEQRES   3 A  262  PHE ALA PHE PRO GLN LEU LYS THR TYR GLN SER GLN LEU          
SEQRES   4 A  262  ILE GLY GLN HIS VAL THR HIS VAL GLU THR ARG GLY LYS          
SEQRES   5 A  262  ALA LEU LEU THR HIS PHE SER ASN ASP LEU THR LEU TYR          
SEQRES   6 A  262  SER HIS ASN GLN LEU TYR GLY VAL TRP ARG VAL VAL ASP          
SEQRES   7 A  262  THR GLY GLU GLU PRO GLN THR THR ARG VAL LEU ARG VAL          
SEQRES   8 A  262  LYS LEU GLN THR ALA ASP LYS THR ILE LEU LEU TYR SER          
SEQRES   9 A  262  ALA SER ASP ILE GLU MET LEU ARG PRO GLU GLN LEU THR          
SEQRES  10 A  262  THR HIS PRO PHE LEU GLN ARG VAL GLY PRO ASP VAL LEU          
SEQRES  11 A  262  ASP PRO ASN LEU THR PRO GLU VAL VAL LYS GLU ARG LEU          
SEQRES  12 A  262  LEU SER PRO ARG PHE ARG ASN ARG GLN PHE ALA GLY LEU          
SEQRES  13 A  262  LEU LEU ASP GLN ALA PHE LEU ALA GLY LEU GLY ASN TYR          
SEQRES  14 A  262  LEU ARG VAL GLU ILE LEU TRP GLN VAL GLY LEU THR GLY          
SEQRES  15 A  262  ASN HIS LYS ALA LYS ASP LEU ASN ALA ALA GLN LEU ASP          
SEQRES  16 A  262  ALA LEU ALA HIS ALA LEU LEU GLU ILE PRO ARG PHE SER          
SEQRES  17 A  262  TYR ALA THR ARG GLY GLN VAL ASP GLU ASN LYS HIS HIS          
SEQRES  18 A  262  GLY ALA LEU PHE ARG PHE LYS VAL PHE HIS ARG ASP GLY          
SEQRES  19 A  262  GLU PRO CYS GLU ARG CYS GLY SER ILE ILE GLU LYS THR          
SEQRES  20 A  262  THR LEU SER SER ARG PRO PHE TYR TRP CYS PRO GLY CYS          
SEQRES  21 A  262  GLN HIS                                                      
HET    PED  C 427      11                                                       
HET    SO4  C 552       5                                                       
HET     ZN  A 501       1                                                       
HET    SO4  A 551       5                                                       
HET    SO4  A 553       5                                                       
HET    SO4  A 554       5                                                       
HET    SO4  A 555       5                                                       
HET    GOL  A 511       6                                                       
HETNAM     PED PENTANE-3,4-DIOL-5-PHOSPHATE                                     
HETNAM     SO4 SULFATE ION                                                      
HETNAM      ZN ZINC ION                                                         
HETNAM     GOL GLYCEROL                                                         
HETSYN     PED OPEN FORM OF 1'-2'-DIDEOXYRIBOFURANOSE-5'-PHOSPHATE              
HETSYN     GOL GLYCERIN; PROPANE-1,2,3-TRIOL                                    
FORMUL   2  PED    C5 H13 O6 P                                                  
FORMUL   4  SO4    5(O4 S 2-)                                                   
FORMUL   5   ZN    ZN 2+                                                        
FORMUL  10  GOL    C3 H8 O3                                                     
FORMUL  11  HOH   *412(H2 O)                                                    
HELIX    1   1 GLU A    2  LYS A   18  1                                  17    
HELIX    2   2 PHE A   29  LYS A   33  5                                   5    
HELIX    3   3 THR A   34  ILE A   40  1                                   7    
HELIX    4   4 GLU A  114  HIS A  119  1                                   6    
HELIX    5   5 HIS A  119  VAL A  125  1                                   7    
HELIX    6   6 THR A  135  SER A  145  1                                  11    
HELIX    7   7 GLN A  152  LEU A  157  1                                   6    
HELIX    8   8 GLY A  167  VAL A  178  1                                  12    
HELIX    9   9 LYS A  185  LEU A  189  5                                   5    
HELIX   10  10 ASN A  190  ARG A  212  1                                  23    
SHEET    1   A 4 ASP A  24  PHE A  27  0                                        
SHEET    2   A 4 LEU A  89  GLN A  94 -1  O  LYS A  92   N  TRP A  26           
SHEET    3   A 4 LYS A  98  TYR A 103 -1  O  LEU A 102   N  ARG A  90           
SHEET    4   A 4 VAL A  73  ASP A  78 -1  N  VAL A  73   O  TYR A 103           
SHEET    1   B 4 VAL A  44  ARG A  50  0                                        
SHEET    2   B 4 ALA A  53  PHE A  58 -1  O  LEU A  55   N  GLU A  48           
SHEET    3   B 4 THR A  63  HIS A  67 -1  O  SER A  66   N  LEU A  54           
SHEET    4   B 4 ASP A 107  LEU A 111 -1  O  LEU A 111   N  THR A  63           
SHEET    1   C 2 GLU A 245  LEU A 249  0                                        
SHEET    2   C 2 ARG A 252  TRP A 256 -1  O  TRP A 256   N  GLU A 245           
LINK         O3'  DA C 426                 P   PED C 427     1555   1555  1.57  
LINK         O3' PED C 427                 P    DG C 428     1555   1555  1.59  
LINK         C1' PED C 427                 N   PRO A   1     1555   1555  1.41  
LINK         SG  CYS A 237                ZN    ZN A 501     1555   1555  2.38  
LINK         SG  CYS A 240                ZN    ZN A 501     1555   1555  2.30  
LINK         SG  CYS A 257                ZN    ZN A 501     1555   1555  2.35  
LINK         SG  CYS A 260                ZN    ZN A 501     1555   1555  2.30  
SITE     1 AC2  4 CYS A 237  CYS A 240  CYS A 257  CYS A 260                    
SITE     1 AC3  7 ARG A 112  LYS A 140  ALA A 191  ASP A 195                    
SITE     2 AC3  7 HOH A 650  HOH A 832  HOH A 840                               
SITE     1 AC4  7 LEU A 158  HOH A 647  HOH A 667  HOH B 902                    
SITE     2 AC4  7  DA C 429  HOH C 652  HOH C 845                               
SITE     1 AC5  2 ARG A 149  LYS A 187                                          
SITE     1 AC6  4 ARG A   8  ASN A  12  HOH A 665  HOH A1053                    
SITE     1 AC7  6 ASN A 190  ALA A 191  HOH A 640  HOH A 773                    
SITE     2 AC7  6 HOH A 831  HOH A 922                                          
SITE     1 AC8  4 ARG A 124  ARG A 147   DG B 401  HOH B 682                    
CRYST1   76.184   76.184  164.540  90.00  90.00  90.00 P 43 2 2      8          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.013126  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.013126  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.006078        0.00000