HEADER    HYDROLASE                               15-FEB-08   3C94              
TITLE     EXOI/SSB-CT COMPLEX                                                   
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;                                                     
COMPND   7 MOL_ID: 2;                                                           
COMPND   8 MOLECULE: SINGLE-STRANDED DNA-BINDING C-TERMINAL TAIL PEPTIDE;       
COMPND   9 CHAIN: B, C;                                                         
COMPND  10 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;                                      
SOURCE  11 MOL_ID: 2;                                                           
SOURCE  12 SYNTHETIC: YES;                                                      
SOURCE  13 OTHER_DETAILS: PEPTIDE WAS CHEMICALLY SYNTHESIZED. THE SEQUENCE IS   
SOURCE  14 FOUND NATURALLY IN E. COLI.                                          
KEYWDS    EXONUCLEASE, SSB, GENOME MAINTENANCE, DNA DAMAGE, DNA REPAIR,         
KEYWDS   2 HYDROLASE, DNA REPLICATION, DNA-BINDING, PHOSPHOPROTEIN              
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    D.LU,J.L.KECK                                                         
REVDAT   6   30-AUG-23 3C94    1       REMARK SEQADV LINK                       
REVDAT   5   25-OCT-17 3C94    1       REMARK                                   
REVDAT   4   21-MAR-12 3C94    1       JRNL                                     
REVDAT   3   13-JUL-11 3C94    1       VERSN                                    
REVDAT   2   24-FEB-09 3C94    1       VERSN                                    
REVDAT   1   08-JUL-08 3C94    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.    2.70 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.2.0019                                      
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) : 2.70                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 20.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 99.2                           
REMARK   3   NUMBER OF REFLECTIONS             : 15912                          
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) : 0.201                           
REMARK   3   R VALUE            (WORKING SET) : 0.198                           
REMARK   3   FREE R VALUE                     : 0.251                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 800                             
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) : 2.70                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.77                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 1072                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 99.65                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2900                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 55                           
REMARK   3   BIN FREE R VALUE                    : 0.3400                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 3782                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 2                                       
REMARK   3   SOLVENT ATOMS            : 42                                      
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) : 49.76                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 0.13000                                              
REMARK   3    B22 (A**2) : 2.84000                                              
REMARK   3    B33 (A**2) : -2.97000                                             
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): NULL          
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.348         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.247         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 26.665        
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.941                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.896                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  3877 ; 0.013 ; 0.022       
REMARK   3   BOND LENGTHS OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  5270 ; 1.052 ; 1.948       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   459 ; 6.242 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):   205 ;36.713 ;23.854       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   631 ;18.995 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):    31 ;17.851 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   569 ; 0.078 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  3030 ; 0.005 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):  1676 ; 0.220 ; 0.200       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  2640 ; 0.312 ; 0.200       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):   129 ; 0.149 ; 0.200       
REMARK   3   H-BOND (X...Y) OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION REFINED ATOMS (A):     1 ; 0.071 ; 0.200       
REMARK   3   POTENTIAL METAL-ION OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW REFINED ATOMS        (A):    36 ; 0.227 ; 0.200       
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):     3 ; 0.130 ; 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):  2381 ; 0.560 ; 1.500       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  3766 ; 0.985 ; 2.000       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):  1690 ; 1.512 ; 3.000       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):  1504 ; 2.508 ; 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  : 5                                          
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):   3.7273  46.3343  18.5735              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:  -0.0447 T22:  -0.1182                                     
REMARK   3      T33:  -0.0414 T12:  -0.0157                                     
REMARK   3      T13:   0.0064 T23:   0.0076                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   1.2505 L22:   1.2580                                     
REMARK   3      L33:   2.2495 L12:  -0.9435                                     
REMARK   3      L13:  -1.0393 L23:   0.8054                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:  -0.1121 S12:   0.0623 S13:   0.0393                       
REMARK   3      S21:   0.0036 S22:   0.0463 S23:  -0.0334                       
REMARK   3      S31:   0.0040 S32:  -0.0878 S33:   0.0658                       
REMARK   3                                                                      
REMARK   3   TLS GROUP : 2                                                      
REMARK   3    NUMBER OF COMPONENTS GROUP : 2                                    
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   A   202        A   352                          
REMARK   3    RESIDUE RANGE :   A   484        A   484                          
REMARK   3    ORIGIN FOR THE GROUP (A):  21.0139  25.6668  24.9561              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:  -0.0116 T22:  -0.0734                                     
REMARK   3      T33:  -0.0729 T12:   0.0568                                     
REMARK   3      T13:  -0.0568 T23:  -0.0056                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   1.8799 L22:   2.5285                                     
REMARK   3      L33:   3.5163 L12:   0.9303                                     
REMARK   3      L13:   0.4002 L23:  -0.7999                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:   0.2526 S12:  -0.3193 S13:  -0.2165                       
REMARK   3      S21:   0.2490 S22:  -0.1582 S23:  -0.3004                       
REMARK   3      S31:   0.4127 S32:   0.3309 S33:  -0.0944                       
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): -10.0873  47.4049  37.5850              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:  -0.1996 T22:  -0.1104                                     
REMARK   3      T33:  -0.1799 T12:   0.0267                                     
REMARK   3      T13:   0.0603 T23:   0.0278                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   2.2574 L22:   0.9845                                     
REMARK   3      L33:   3.3393 L12:   0.3881                                     
REMARK   3      L13:  -0.1988 L23:   0.3477                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:  -0.0263 S12:  -0.2556 S13:  -0.0770                       
REMARK   3      S21:   0.1612 S22:  -0.1581 S23:   0.0355                       
REMARK   3      S31:   0.1720 S32:  -0.4618 S33:   0.1844                       
REMARK   3                                                                      
REMARK   3   TLS GROUP : 4                                                      
REMARK   3    NUMBER OF COMPONENTS GROUP : 2                                    
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   B   174        B   177                          
REMARK   3    RESIDUE RANGE :   C   175        C   177                          
REMARK   3    ORIGIN FOR THE GROUP (A):  26.2757  24.6968   9.5861              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.1400 T22:   0.1241                                     
REMARK   3      T33:   0.2022 T12:   0.0388                                     
REMARK   3      T13:   0.1662 T23:   0.0059                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   5.2525 L22:   3.3973                                     
REMARK   3      L33:  16.1774 L12:   2.1235                                     
REMARK   3      L13:   7.5929 L23:   5.6200                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:   0.7181 S12:   0.4645 S13:  -0.6657                       
REMARK   3      S21:  -1.3143 S22:  -0.0277 S23:  -0.3904                       
REMARK   3      S31:   2.1503 S32:   0.5992 S33:  -0.6904                       
REMARK   3                                                                      
REMARK   3   TLS GROUP : 5                                                      
REMARK   3    NUMBER OF COMPONENTS GROUP : 1                                    
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   A   485        A   526                          
REMARK   3    ORIGIN FOR THE GROUP (A):   5.4477  42.5334  23.4740              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.0768 T22:   0.0379                                     
REMARK   3      T33:   0.0921 T12:  -0.0346                                     
REMARK   3      T13:  -0.0307 T23:  -0.0395                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   0.3069 L22:   1.1479                                     
REMARK   3      L33:   1.1215 L12:  -0.5930                                     
REMARK   3      L13:  -0.2387 L23:   0.4169                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:   0.0060 S12:   0.0780 S13:  -0.0206                       
REMARK   3      S21:  -0.0662 S22:   0.0912 S23:  -0.0510                       
REMARK   3      S31:  -0.0376 S32:  -0.1207 S33:  -0.0972                       
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 3C94 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_1000046496.                                   
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   : 16073                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.700                              
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     (%) : 98.0                               
REMARK 200  DATA REDUNDANCY                : 3.700                              
REMARK 200  R MERGE                    (I) : 0.07900                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 13.5000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.70                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.80                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 88.2                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 3.80                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.38300                            
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   (%): 50.12                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.47                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 18-27% PEG4000, 0.1-0.15M MGCL(2), 0.1   
REMARK 280  M TRIS-HCL; 2:1 RATIO OF SSB-CT PEPTIDE:EXONUCLEASE U, PH 8.0,      
REMARK 280  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       33.57550            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       45.63850            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       46.09550            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       45.63850            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       33.57550            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       46.09550            
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: TRIMERIC                          
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TRIMERIC                   
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 1390 ANGSTROM**2                          
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, C                               
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     ASN A   179                                                      
REMARK 465     ALA A   180                                                      
REMARK 465     HIS A   181                                                      
REMARK 465     GLY A   291                                                      
REMARK 465     ASP A   292                                                      
REMARK 465     GLU A   353                                                      
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 465     TRP B   168                                                      
REMARK 465     MET B   169                                                      
REMARK 465     ASP B   170                                                      
REMARK 465     PHE B   171                                                      
REMARK 465     ASP B   172                                                      
REMARK 465     ASP B   173                                                      
REMARK 465     TRP C   168                                                      
REMARK 465     MET C   169                                                      
REMARK 465     ASP C   170                                                      
REMARK 465     PHE C   171                                                      
REMARK 465     ASP C   172                                                      
REMARK 465     ASP C   173                                                      
REMARK 465     ASP C   174                                                      
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   OD1  ASP A   108     O    HOH A   492              2.19            
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      -72.60   -138.28                                   
REMARK 500    PHE A 120       33.48     77.76                                   
REMARK 500    TRP A 128      -14.24   -146.26                                   
REMARK 500    GLN A 201       58.22   -150.68                                   
REMARK 500    ASN A 340       61.91   -150.62                                   
REMARK 500    TYR A 368       43.05    -94.77                                   
REMARK 500    ALA A 393       26.29    -75.30                                   
REMARK 500    VAL A 399      -62.49    -96.71                                   
REMARK 500    VAL A 475      -66.16   -102.08                                   
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 487   O    71.0                                              
REMARK 620 3 HOH A 492   O    80.0  80.7                                        
REMARK 620 4 HOH A 503   O    78.3  90.9 158.2                                  
REMARK 620 5 HOH A 509   O    75.3 146.3  93.9  81.8                            
REMARK 620 6 HOH A 512   O   161.4  92.2 105.6  94.7 121.1                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG A 484  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLU A 318   OE1                                                    
REMARK 620 2 GLU A 318   OE2  45.3                                              
REMARK 620 3 ASP A 319   OD1  75.1  72.8                                        
REMARK 620 N                    1     2                                         
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 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 484                  
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1FXX   RELATED DB: PDB                                   
REMARK 900 APO EXOI                                                             
REMARK 900 RELATED ID: 3C95   RELATED DB: PDB                                   
REMARK 900 EXONUCLEASE I (APO)                                                  
DBREF  3C94 A    1   475  UNP    P04995   EX1_ECOLI        1    475             
DBREF  3C94 B  169   177  UNP    P0AGE0   SSB_ECOLI      170    178             
DBREF  3C94 C  169   177  UNP    P0AGE0   SSB_ECOLI      170    178             
SEQADV 3C94 ASP A  472  UNP  P04995    GLU   472 VARIANT                        
SEQADV 3C94 GLU A  476  UNP  P04995              EXPRESSION TAG                 
SEQADV 3C94 HIS A  477  UNP  P04995              EXPRESSION TAG                 
SEQADV 3C94 HIS A  478  UNP  P04995              EXPRESSION TAG                 
SEQADV 3C94 HIS A  479  UNP  P04995              EXPRESSION TAG                 
SEQADV 3C94 HIS A  480  UNP  P04995              EXPRESSION TAG                 
SEQADV 3C94 HIS A  481  UNP  P04995              EXPRESSION TAG                 
SEQADV 3C94 HIS A  482  UNP  P04995              EXPRESSION TAG                 
SEQADV 3C94 TRP B  168  UNP  P0AGE0              EXPRESSION TAG                 
SEQADV 3C94 TRP C  168  UNP  P0AGE0              EXPRESSION TAG                 
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                                                          
SEQRES   1 B   10  TRP MET ASP PHE ASP ASP ASP ILE PRO PHE                      
SEQRES   1 C   10  TRP MET ASP PHE ASP ASP ASP ILE PRO PHE                      
HET     MG  A 483       1                                                       
HET     MG  A 484       1                                                       
HETNAM      MG MAGNESIUM ION                                                    
FORMUL   4   MG    2(MG 2+)                                                     
FORMUL   6  HOH   *42(H2 O)                                                     
HELIX    1   1 GLN A   60  GLY A   68  1                                   9    
HELIX    2   2 THR A   70  GLY A   78  1                                   9    
HELIX    3   3 ASN A   80  VAL A   94  1                                  15    
HELIX    4   4 PHE A  107  PHE A  120  1                                  14    
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  ILE A  221  1                                   9    
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  THR A  285  1                                  11    
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  GLU A  339  1                                  14    
HELIX   17  17 PRO A  341  ALA A  352  1                                  12    
HELIX   18  18 ASN A  362  GLN A  366  5                                   5    
HELIX   19  19 SER A  373  THR A  386  1                                  14    
HELIX   20  20 GLU A  387  LEU A  391  5                                   5    
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  GLU A  476  1                                  20    
SHEET    1   A 5 GLU A  47  TYR A  50  0                                        
SHEET    2   A 5 PRO A  28  THR A  36 -1  N  ALA A  33   O  GLU A  47           
SHEET    3   A 5 THR A  10  THR A  18 -1  N  GLU A  17   O  ALA A  29           
SHEET    4   A 5 THR A  97  GLY A 101  1  O  CYS A  98   N  THR A  10           
SHEET    5   A 5 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  VAL A 259   O  VAL A 301           
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  2.29  
LINK         OE1 GLU A 318                MG    MG A 484     1555   1555  2.72  
LINK         OE2 GLU A 318                MG    MG A 484     1555   1555  2.95  
LINK         OD1 ASP A 319                MG    MG A 484     1555   1555  2.35  
LINK        MG    MG A 483                 O   HOH A 487     1555   1555  2.18  
LINK        MG    MG A 483                 O   HOH A 492     1555   1555  2.03  
LINK        MG    MG A 483                 O   HOH A 503     1555   1555  2.01  
LINK        MG    MG A 483                 O   HOH A 509     1555   1555  1.92  
LINK        MG    MG A 483                 O   HOH A 512     1555   1555  2.13  
SITE     1 AC1  6 ASP A  15  HOH A 487  HOH A 492  HOH A 503                    
SITE     2 AC1  6 HOH A 509  HOH A 512                                          
SITE     1 AC2  2 GLU A 318  ASP A 319                                          
CRYST1   67.151   92.191   91.277  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      0.014892  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.010847  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.010956        0.00000