HEADER    HYDROLASE                               15-FEB-08   3C95              
TITLE     EXONUCLEASE I (APO)                                                   
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: EXODEOXYRIBONUCLEASE I;                                    
COMPND   3 CHAIN: A;                                                            
COMPND   4 SYNONYM: EXONUCLEASE I, DNA DEOXYRIBOPHOSPHODIESTERASE, DRPASE;      
COMPND   5 EC: 3.1.11.1;                                                        
COMPND   6 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI;                               
SOURCE   3 ORGANISM_TAXID: 562;                                                 
SOURCE   4 STRAIN: K12;                                                         
SOURCE   5 GENE: SBCB, CPEA, XONA;                                              
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   8 EXPRESSION_SYSTEM_STRAIN: BL21 (DE3);                                
SOURCE   9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  10 EXPRESSION_SYSTEM_PLASMID: PET                                       
KEYWDS    EXONUCLEASE, SSB, GENOME MAINTENANCE, DNA DAMAGE, DNA REPAIR,         
KEYWDS   2 HYDROLASE                                                            
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    J.L.KECK,D.LU                                                         
REVDAT   6   30-AUG-23 3C95    1       REMARK SEQADV LINK                       
REVDAT   5   25-OCT-17 3C95    1       REMARK                                   
REVDAT   4   21-MAR-12 3C95    1       JRNL                                     
REVDAT   3   13-JUL-11 3C95    1       VERSN                                    
REVDAT   2   24-FEB-09 3C95    1       VERSN                                    
REVDAT   1   08-JUL-08 3C95    0                                                
JRNL        AUTH   D.LU,J.L.KECK                                                
JRNL        TITL   STRUCTURAL BASIS OF ESCHERICHIA COLI SINGLE-STRANDED         
JRNL        TITL 2 DNA-BINDING PROTEIN STIMULATION OF EXONUCLEASE I.            
JRNL        REF    PROC.NATL.ACAD.SCI.USA        V. 105  9169 2008              
JRNL        REFN                   ISSN 0027-8424                               
JRNL        PMID   18591666                                                     
JRNL        DOI    10.1073/PNAS.0800741105                                      
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.70 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    REFINEMENT TARGET : MAXIMUM LIKELIHOOD                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.70                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 20.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 93.0                           
REMARK   3   NUMBER OF REFLECTIONS             : 51391                          
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 + TEST SET) : 0.182                           
REMARK   3   R VALUE            (WORKING SET) : 0.180                           
REMARK   3   FREE R VALUE                     : 0.213                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.100                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 2611                            
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 20                           
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 1.70                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.75                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 3321                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 87.30                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2170                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 170                          
REMARK   3   BIN FREE R VALUE                    : 0.2480                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 3626                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 1                                       
REMARK   3   SOLVENT ATOMS            : 436                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   B VALUE TYPE : LIKELY RESIDUAL                                     
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 24.36                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -0.36000                                             
REMARK   3    B22 (A**2) : -0.14000                                             
REMARK   3    B33 (A**2) : 0.50000                                              
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): 0.116         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.111         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.065         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 4.308         
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.958                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.942                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  3832 ; 0.013 ; 0.022       
REMARK   3   BOND LENGTHS OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  5208 ; 1.103 ; 1.946       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   446 ; 5.887 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):   211 ;35.096 ;23.886       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   652 ;13.249 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):    34 ;16.044 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   567 ; 0.082 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  2979 ; 0.007 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):  1802 ; 0.221 ; 0.200       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  2654 ; 0.312 ; 0.200       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):   353 ; 0.127 ; 0.200       
REMARK   3   H-BOND (X...Y) OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW REFINED ATOMS        (A):    41 ; 0.198 ; 0.200       
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):    20 ; 0.135 ; 0.200       
REMARK   3   SYMMETRY H-BOND OTHERS            (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.     COUNT   RMS    WEIGHT      
REMARK   3   MAIN-CHAIN BOND REFINED ATOMS  (A**2):  2333 ; 0.916 ; 1.500       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  3688 ; 1.400 ; 2.000       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):  1704 ; 2.408 ; 3.000       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):  1520 ; 3.704 ; 4.500       
REMARK   3   SIDE-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B REFINED ATOMS     (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B OTHER ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3 ANISOTROPIC THERMAL FACTOR RESTRAINTS.    COUNT   RMS   WEIGHT       
REMARK   3   RIGID-BOND RESTRAINTS          (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; FREE ATOMS         (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; BONDED ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS STATISTICS                                           
REMARK   3   NUMBER OF DIFFERENT NCS GROUPS : NULL                              
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : 4                                          
REMARK   3                                                                      
REMARK   3   TLS GROUP : 1                                                      
REMARK   3    NUMBER OF COMPONENTS GROUP : 2                                    
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   A     7        A   201                          
REMARK   3    RESIDUE RANGE :   A   483        A   483                          
REMARK   3    ORIGIN FOR THE GROUP (A):  22.6298  72.6316  21.8403              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:  -0.0255 T22:  -0.0095                                     
REMARK   3      T33:  -0.0138 T12:  -0.0026                                     
REMARK   3      T13:   0.0077 T23:  -0.0003                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   0.3480 L22:   0.2886                                     
REMARK   3      L33:   0.3951 L12:   0.0666                                     
REMARK   3      L13:   0.2593 L23:   0.1924                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:   0.0187 S12:  -0.0381 S13:   0.0112                       
REMARK   3      S21:   0.0101 S22:  -0.0005 S23:   0.0032                       
REMARK   3      S31:  -0.0041 S32:  -0.0299 S33:  -0.0182                       
REMARK   3                                                                      
REMARK   3   TLS GROUP : 2                                                      
REMARK   3    NUMBER OF COMPONENTS GROUP : 1                                    
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   A   202        A   353                          
REMARK   3    ORIGIN FOR THE GROUP (A):  26.9202  50.9038   5.7429              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:  -0.0311 T22:  -0.0462                                     
REMARK   3      T33:   0.0115 T12:   0.0043                                     
REMARK   3      T13:   0.0051 T23:   0.0115                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   0.5496 L22:   1.3566                                     
REMARK   3      L33:   1.2624 L12:  -0.2334                                     
REMARK   3      L13:  -0.2538 L23:   0.0977                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:  -0.0215 S12:  -0.0086 S13:  -0.0876                       
REMARK   3      S21:  -0.0181 S22:  -0.0293 S23:  -0.1547                       
REMARK   3      S31:   0.1095 S32:   0.0888 S33:   0.0509                       
REMARK   3                                                                      
REMARK   3   TLS GROUP : 3                                                      
REMARK   3    NUMBER OF COMPONENTS GROUP : 1                                    
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   A   360        A   476                          
REMARK   3    ORIGIN FOR THE GROUP (A):  41.7951  74.2007  34.7525              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:  -0.1061 T22:  -0.0229                                     
REMARK   3      T33:  -0.0953 T12:   0.0102                                     
REMARK   3      T13:  -0.0236 T23:  -0.0146                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   0.8126 L22:   1.4881                                     
REMARK   3      L33:   1.6689 L12:   0.0580                                     
REMARK   3      L13:  -0.1403 L23:  -0.5195                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:   0.0162 S12:  -0.0974 S13:  -0.0714                       
REMARK   3      S21:   0.0596 S22:  -0.0499 S23:  -0.1488                       
REMARK   3      S31:   0.0061 S32:   0.1327 S33:   0.0337                       
REMARK   3                                                                      
REMARK   3   TLS GROUP : 4                                                      
REMARK   3    NUMBER OF COMPONENTS GROUP : 1                                    
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   A   484        A   919                          
REMARK   3    ORIGIN FOR THE GROUP (A):  27.8024  67.9283  21.5786              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:  -0.0333 T22:  -0.0267                                     
REMARK   3      T33:  -0.0225 T12:   0.0073                                     
REMARK   3      T13:   0.0099 T23:  -0.0093                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   0.3162 L22:   0.3257                                     
REMARK   3      L33:   0.3531 L12:   0.0857                                     
REMARK   3      L13:   0.0521 L23:   0.0109                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:   0.0036 S12:  -0.0377 S13:  -0.0062                       
REMARK   3      S21:   0.0110 S22:   0.0018 S23:  -0.0058                       
REMARK   3      S31:  -0.0015 S32:  -0.0192 S33:  -0.0055                       
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED : BABINET MODEL WITH MASK                              
REMARK   3   PARAMETERS FOR MASK CALCULATION                                    
REMARK   3   VDW PROBE RADIUS   : 1.20                                          
REMARK   3   ION PROBE RADIUS   : 0.80                                          
REMARK   3   SHRINKAGE RADIUS   : 0.80                                          
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 3C95 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 18-FEB-08.                  
REMARK 100 THE DEPOSITION ID IS D_1000046497.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 03-AUG-06                          
REMARK 200  TEMPERATURE           (KELVIN) : 110                                
REMARK 200  PH                             : 8.0                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : APS                                
REMARK 200  BEAMLINE                       : 21-ID-D                            
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.9000                             
REMARK 200  MONOCHROMATOR                  : SI(111) DOUBLE CRYSTAL             
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 315                   
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 51391                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.700                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 20.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 92.5                               
REMARK 200  DATA REDUNDANCY                : 4.000                              
REMARK 200  R MERGE                    (I) : 0.06100                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 19.5000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.70                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.76                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 91.5                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 4.00                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.47900                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: AMORE                                                 
REMARK 200 STARTING MODEL: 1FXX                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 45.99                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.28                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 18-27% PEG4000, 0.1-0.15 M MGCL(2),      
REMARK 280  0.1 M TRIS-HCL, PH 8.0, VAPOR DIFFUSION, HANGING DROP,              
REMARK 280  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       26.31400            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       51.39350            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       46.04050            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       51.39350            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       26.31400            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       46.04050            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC                         
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC                  
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A                                     
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 465                                                                      
REMARK 465 MISSING RESIDUES                                                     
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                       
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                
REMARK 465                                                                      
REMARK 465   M RES C SSSEQI                                                     
REMARK 465     MET A     1                                                      
REMARK 465     MET A     2                                                      
REMARK 465     ASN A     3                                                      
REMARK 465     ASP A     4                                                      
REMARK 465     GLY A     5                                                      
REMARK 465     LYS A     6                                                      
REMARK 465     SER A   178                                                      
REMARK 465     ASN A   179                                                      
REMARK 465     ALA A   180                                                      
REMARK 465     HIS A   181                                                      
REMARK 465     GLU A   281                                                      
REMARK 465     ARG A   282                                                      
REMARK 465     LEU A   283                                                      
REMARK 465     TYR A   284                                                      
REMARK 465     THR A   285                                                      
REMARK 465     ALA A   286                                                      
REMARK 465     LYS A   287                                                      
REMARK 465     THR A   288                                                      
REMARK 465     ASP A   289                                                      
REMARK 465     LEU A   290                                                      
REMARK 465     GLY A   291                                                      
REMARK 465     ASP A   292                                                      
REMARK 465     ASN A   293                                                      
REMARK 465     ALA A   294                                                      
REMARK 465     ALA A   354                                                      
REMARK 465     GLU A   355                                                      
REMARK 465     PRO A   356                                                      
REMARK 465     PHE A   357                                                      
REMARK 465     THR A   358                                                      
REMARK 465     PRO A   359                                                      
REMARK 465     HIS A   477                                                      
REMARK 465     HIS A   478                                                      
REMARK 465     HIS A   479                                                      
REMARK 465     HIS A   480                                                      
REMARK 465     HIS A   481                                                      
REMARK 465     HIS A   482                                                      
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT                     
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT.                            
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI           DISTANCE          
REMARK 500   SD   MET A   235     CE   LYS A   299              1.96            
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    PHE A 107      -77.39   -119.76                                   
REMARK 500    VAL A 475      -27.87   -141.12                                   
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 483  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 ASP A  15   OD1                                                    
REMARK 620 2 HOH A 490   O    85.6                                              
REMARK 620 3 HOH A 496   O    86.9  86.3                                        
REMARK 620 4 HOH A 497   O    89.0 174.6  94.1                                  
REMARK 620 5 HOH A 512   O   175.0  95.4  98.1  89.9                            
REMARK 620 6 HOH A 545   O    88.0  91.4 174.5  87.8  87.1                      
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 MG A 483                  
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1FXX   RELATED DB: PDB                                   
REMARK 900 APO EXONUCLESE I                                                     
REMARK 900 RELATED ID: 2C94   RELATED DB: PDB                                   
REMARK 900 SSB-CT/EXONUCLEASE I COMPLEX                                         
DBREF  3C95 A    1   475  UNP    P04995   EX1_ECOLI        1    475             
SEQADV 3C95 ASP A  472  UNP  P04995    GLU   472 CONFLICT                       
SEQADV 3C95 GLU A  476  UNP  P04995              INSERTION                      
SEQADV 3C95 HIS A  477  UNP  P04995              INSERTION                      
SEQADV 3C95 HIS A  478  UNP  P04995              INSERTION                      
SEQADV 3C95 HIS A  479  UNP  P04995              INSERTION                      
SEQADV 3C95 HIS A  480  UNP  P04995              INSERTION                      
SEQADV 3C95 HIS A  481  UNP  P04995              INSERTION                      
SEQADV 3C95 HIS A  482  UNP  P04995              INSERTION                      
SEQRES   1 A  482  MET MET ASN ASP GLY LYS GLN GLN SER THR PHE LEU PHE          
SEQRES   2 A  482  HIS ASP TYR GLU THR PHE GLY THR HIS PRO ALA LEU ASP          
SEQRES   3 A  482  ARG PRO ALA GLN PHE ALA ALA ILE ARG THR ASP SER GLU          
SEQRES   4 A  482  PHE ASN VAL ILE GLY GLU PRO GLU VAL PHE TYR CYS LYS          
SEQRES   5 A  482  PRO ALA ASP ASP TYR LEU PRO GLN PRO GLY ALA VAL LEU          
SEQRES   6 A  482  ILE THR GLY ILE THR PRO GLN GLU ALA ARG ALA LYS GLY          
SEQRES   7 A  482  GLU ASN GLU ALA ALA PHE ALA ALA ARG ILE HIS SER LEU          
SEQRES   8 A  482  PHE THR VAL PRO LYS THR CYS ILE LEU GLY TYR ASN ASN          
SEQRES   9 A  482  VAL ARG PHE ASP ASP GLU VAL THR ARG ASN ILE PHE TYR          
SEQRES  10 A  482  ARG ASN PHE TYR ASP PRO TYR ALA TRP SER TRP GLN HIS          
SEQRES  11 A  482  ASP ASN SER ARG TRP ASP LEU LEU ASP VAL MET ARG ALA          
SEQRES  12 A  482  CYS TYR ALA LEU ARG PRO GLU GLY ILE ASN TRP PRO GLU          
SEQRES  13 A  482  ASN ASP ASP GLY LEU PRO SER PHE ARG LEU GLU HIS LEU          
SEQRES  14 A  482  THR LYS ALA ASN GLY ILE GLU HIS SER ASN ALA HIS ASP          
SEQRES  15 A  482  ALA MET ALA ASP VAL TYR ALA THR ILE ALA MET ALA LYS          
SEQRES  16 A  482  LEU VAL LYS THR ARG GLN PRO ARG LEU PHE ASP TYR LEU          
SEQRES  17 A  482  PHE THR HIS ARG ASN LYS HIS LYS LEU MET ALA LEU ILE          
SEQRES  18 A  482  ASP VAL PRO GLN MET LYS PRO LEU VAL HIS VAL SER GLY          
SEQRES  19 A  482  MET PHE GLY ALA TRP ARG GLY ASN THR SER TRP VAL ALA          
SEQRES  20 A  482  PRO LEU ALA TRP HIS PRO GLU ASN ARG ASN ALA VAL ILE          
SEQRES  21 A  482  MET VAL ASP LEU ALA GLY ASP ILE SER PRO LEU LEU GLU          
SEQRES  22 A  482  LEU ASP SER ASP THR LEU ARG GLU ARG LEU TYR THR ALA          
SEQRES  23 A  482  LYS THR ASP LEU GLY ASP ASN ALA ALA VAL PRO VAL LYS          
SEQRES  24 A  482  LEU VAL HIS ILE ASN LYS CYS PRO VAL LEU ALA GLN ALA          
SEQRES  25 A  482  ASN THR LEU ARG PRO GLU ASP ALA ASP ARG LEU GLY ILE          
SEQRES  26 A  482  ASN ARG GLN HIS CYS LEU ASP ASN LEU LYS ILE LEU ARG          
SEQRES  27 A  482  GLU ASN PRO GLN VAL ARG GLU LYS VAL VAL ALA ILE PHE          
SEQRES  28 A  482  ALA GLU ALA GLU PRO PHE THR PRO SER ASP ASN VAL ASP          
SEQRES  29 A  482  ALA GLN LEU TYR ASN GLY PHE PHE SER ASP ALA ASP ARG          
SEQRES  30 A  482  ALA ALA MET LYS ILE VAL LEU GLU THR GLU PRO ARG ASN          
SEQRES  31 A  482  LEU PRO ALA LEU ASP ILE THR PHE VAL ASP LYS ARG ILE          
SEQRES  32 A  482  GLU LYS LEU LEU PHE ASN TYR ARG ALA ARG ASN PHE PRO          
SEQRES  33 A  482  GLY THR LEU ASP TYR ALA GLU GLN GLN ARG TRP LEU GLU          
SEQRES  34 A  482  HIS ARG ARG GLN VAL PHE THR PRO GLU PHE LEU GLN GLY          
SEQRES  35 A  482  TYR ALA ASP GLU LEU GLN MET LEU VAL GLN GLN TYR ALA          
SEQRES  36 A  482  ASP ASP LYS GLU LYS VAL ALA LEU LEU LYS ALA LEU TRP          
SEQRES  37 A  482  GLN TYR ALA ASP GLU ILE VAL GLU HIS HIS HIS HIS HIS          
SEQRES  38 A  482  HIS                                                          
HET     MG  A 483       1                                                       
HETNAM      MG MAGNESIUM ION                                                    
FORMUL   2   MG    MG 2+                                                        
FORMUL   3  HOH   *436(H2 O)                                                    
HELIX    1   1 GLN A   60  GLY A   68  1                                   9    
HELIX    2   2 THR A   70  LYS A   77  1                                   8    
HELIX    3   3 ASN A   80  THR A   93  1                                  14    
HELIX    4   4 PHE A  107  ASN A  119  1                                  13    
HELIX    5   5 TYR A  124  ASN A  132  5                                   9    
HELIX    6   6 LEU A  137  ARG A  148  1                                  12    
HELIX    7   7 ARG A  165  ASN A  173  1                                   9    
HELIX    8   8 MET A  184  GLN A  201  1                                  18    
HELIX    9   9 GLN A  201  HIS A  211  1                                  11    
HELIX   10  10 ASN A  213  ALA A  219  1                                   7    
HELIX   11  11 GLY A  234  GLY A  241  5                                   8    
HELIX   12  12 ILE A  268  LEU A  274  1                                   7    
HELIX   13  13 ASP A  275  ARG A  280  1                                   6    
HELIX   14  14 ASN A  313  LEU A  315  5                                   3    
HELIX   15  15 ARG A  316  GLY A  324  1                                   9    
HELIX   16  16 ASN A  326  ASN A  340  1                                  15    
HELIX   17  17 PRO A  341  ALA A  352  1                                  12    
HELIX   18  18 ASN A  362  GLY A  370  5                                   9    
HELIX   19  19 SER A  373  THR A  386  1                                  14    
HELIX   20  20 GLU A  387  LEU A  394  5                                   8    
HELIX   21  21 LYS A  401  PHE A  415  1                                  15    
HELIX   22  22 PRO A  416  LEU A  419  5                                   4    
HELIX   23  23 ASP A  420  PHE A  435  1                                  16    
HELIX   24  24 THR A  436  TYR A  454  1                                  19    
HELIX   25  25 ASP A  457  VAL A  475  1                                  19    
SHEET    1   A 6 GLY A  78  GLU A  79  0                                        
SHEET    2   A 6 GLU A  47  CYS A  51  1  N  TYR A  50   O  GLU A  79           
SHEET    3   A 6 PRO A  28  ASP A  37 -1  N  ALA A  33   O  GLU A  47           
SHEET    4   A 6 THR A  10  THR A  18 -1  N  GLU A  17   O  ALA A  29           
SHEET    5   A 6 THR A  97  GLY A 101  1  O  CYS A  98   N  LEU A  12           
SHEET    6   A 6 SER A 133  ASP A 136  1  O  SER A 133   N  ILE A  99           
SHEET    1   B 5 VAL A 298  HIS A 302  0                                        
SHEET    2   B 5 ALA A 258  ASP A 263 -1  N  MET A 261   O  LYS A 299           
SHEET    3   B 5 THR A 243  TRP A 251 -1  N  ALA A 250   O  ILE A 260           
SHEET    4   B 5 LEU A 229  VAL A 232 -1  N  LEU A 229   O  VAL A 246           
SHEET    5   B 5 VAL A 308  GLN A 311 -1  O  ALA A 310   N  VAL A 230           
LINK         OD1 ASP A  15                MG    MG A 483     1555   1555  2.07  
LINK        MG    MG A 483                 O   HOH A 490     1555   1555  2.05  
LINK        MG    MG A 483                 O   HOH A 496     1555   1555  2.06  
LINK        MG    MG A 483                 O   HOH A 497     1555   1555  2.11  
LINK        MG    MG A 483                 O   HOH A 512     1555   1555  2.01  
LINK        MG    MG A 483                 O   HOH A 545     1555   1555  2.15  
SITE     1 AC1  6 ASP A  15  HOH A 490  HOH A 496  HOH A 497                    
SITE     2 AC1  6 HOH A 512  HOH A 545                                          
CRYST1   52.628   92.081  102.787  90.00  90.00  90.00 P 21 21 21    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      0.019001  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.010860  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.009729        0.00000