HEADER    TOXIN                                   26-APR-21   7EPJ              
TITLE     CRYSTAL STRUCTURE OF E.COLI CCDB MUTANT V46L                          
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: TOXIN CCDB;                                                
COMPND   3 CHAIN: A;                                                            
COMPND   4 SYNONYM: CYTOTOXIC PROTEIN CCDB,LYNB,PROTEIN G,PROTEIN LETD;         
COMPND   5 ENGINEERED: YES;                                                     
COMPND   6 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI K-12;                          
SOURCE   3 ORGANISM_TAXID: 83333;                                               
SOURCE   4 STRAIN: K12;                                                         
SOURCE   5 GENE: CCDB, G, LETB, LETD, ECOK12F043;                               
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   8 EXPRESSION_SYSTEM_STRAIN: TOP10GYRASE;                               
SOURCE   9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  10 EXPRESSION_SYSTEM_PLASMID: PBAD24                                    
KEYWDS    CCDB, TOPOISOMERASE POISON, GLOBAL SUPPRESSOR, TOXIN                  
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    K.MANJUNATH,P.GOYAL,R.VARADARAJAN                                     
REVDAT   3   29-NOV-23 7EPJ    1       REMARK                                   
REVDAT   2   21-DEC-22 7EPJ    1       JRNL                                     
REVDAT   1   08-JUN-22 7EPJ    0                                                
JRNL        AUTH   G.CHATTOPADHYAY,J.BHOWMICK,K.MANJUNATH,S.AHMED,P.GOYAL,      
JRNL        AUTH 2 R.VARADARAJAN                                                
JRNL        TITL   MECHANISTIC INSIGHTS INTO GLOBAL SUPPRESSORS OF PROTEIN      
JRNL        TITL 2 FOLDING DEFECTS.                                             
JRNL        REF    PLOS GENET.                   V.  18 10334 2022              
JRNL        REFN                   ESSN 1553-7404                               
JRNL        PMID   36037221                                                     
JRNL        DOI    10.1371/JOURNAL.PGEN.1010334                                 
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.35 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.8.0258                                      
REMARK   3   AUTHORS     : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER,              
REMARK   3               : NICHOLLS,WINN,LONG,VAGIN                             
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : NULL                                          
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.35                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 33.98                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   COMPLETENESS FOR RANGE        (%) : 100.0                          
REMARK   3   NUMBER OF REFLECTIONS             : 19429                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : FREE R-VALUE                    
REMARK   3   FREE R VALUE TEST SET SELECTION  : NULL                            
REMARK   3   R VALUE     (WORKING + TEST SET) : NULL                            
REMARK   3   R VALUE            (WORKING SET) : 0.162                           
REMARK   3   FREE R VALUE                     : 0.184                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 4.401                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 855                             
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) : 1.35                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.39                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 1352                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 100.0                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.1720                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 70                           
REMARK   3   BIN FREE R VALUE                    : 0.2130                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 792                                     
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 2                                       
REMARK   3   SOLVENT ATOMS            : 167                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 5.80                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 9.36                           
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 0.03100                                              
REMARK   3    B22 (A**2) : 0.27600                                              
REMARK   3    B33 (A**2) : -0.13200                                             
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : -0.12300                                             
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): 0.058         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.058         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.038         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 0.907         
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.964                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.957                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):   834 ; 0.014 ; 0.013       
REMARK   3   BOND LENGTHS OTHERS               (A):   781 ; 0.001 ; 0.017       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  1133 ; 1.922 ; 1.637       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  1810 ; 1.515 ; 1.575       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   108 ; 6.444 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):    42 ;27.249 ;21.667       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   148 ;13.470 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):     7 ;23.625 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   109 ; 0.093 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):   932 ; 0.011 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):   178 ; 0.001 ; 0.020       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):   149 ; 0.208 ; 0.200       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):    57 ; 0.258 ; 0.200       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):   418 ; 0.169 ; 0.200       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):   121 ; 0.253 ; 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):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):  NULL ;  NULL ;  NULL       
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):   411 ; 1.227 ; 0.862       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):   410 ; 1.223 ; 0.857       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):   514 ; 1.884 ; 1.290       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):   515 ; 1.887 ; 1.296       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):   423 ; 1.547 ; 0.901       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):   423 ; 1.547 ; 0.898       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):   615 ; 2.351 ; 1.290       
REMARK   3   SIDE-CHAIN ANGLE OTHER ATOMS   (A**2):   615 ; 2.349 ; 1.289       
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  : NULL                                       
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED : MASK BULK SOLVENT                                    
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: HYDROGENS HAVE BEEN ADDED IN THEIR        
REMARK   3  RIDING POSITIONS                                                    
REMARK   4                                                                      
REMARK   4 7EPJ COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 28-APR-21.                  
REMARK 100 THE DEPOSITION ID IS D_1300021966.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 12-FEB-21                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 5.1                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : ELETTRA                            
REMARK 200  BEAMLINE                       : 11.2C                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.0358                             
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : PIXEL                              
REMARK 200  DETECTOR MANUFACTURER          : DECTRIS PILATUS 6M                 
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : MOSFLM 7.2.2                       
REMARK 200  DATA SCALING SOFTWARE          : SCALA 3.3.22                       
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 19433                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.350                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 33.980                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 100.0                              
REMARK 200  DATA REDUNDANCY                : 5.900                              
REMARK 200  R MERGE                    (I) : 0.09800                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 11.6000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.35                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.43                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 100.0                              
REMARK 200  DATA REDUNDANCY IN SHELL       : 5.10                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.28800                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 3.700                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: PHASER 2.8.3                                          
REMARK 200 STARTING MODEL: 3VUB                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 36.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.92                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 200MM CACL2, 25% PEG 3350, PH 5.1,       
REMARK 280  VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 291K                     
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 1 2 1                          
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,Y,-Z                                                 
REMARK 290       3555   X+1/2,Y+1/2,Z                                           
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        0.00000            
REMARK 290   SMTRY2   2  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   3  1.000000  0.000000  0.000000       37.55000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       18.38000            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   4 -1.000000  0.000000  0.000000       37.55000            
REMARK 290   SMTRY2   4  0.000000  1.000000  0.000000       18.38000            
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: DIMERIC                           
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 1950 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 10070 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -18.0 KCAL/MOL                        
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 350   BIOMT1   2 -1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   2  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   2  0.000000  0.000000 -1.000000        0.00000            
REMARK 375                                                                      
REMARK 375 SPECIAL POSITION                                                     
REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS            
REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL          
REMARK 375 POSITIONS.                                                           
REMARK 375                                                                      
REMARK 375 ATOM RES CSSEQI                                                      
REMARK 375      HOH A 636  LIES ON A SPECIAL POSITION.                          
REMARK 375      HOH A 667  LIES ON A SPECIAL POSITION.                          
REMARK 470                                                                      
REMARK 470 MISSING ATOM                                                         
REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER;           
REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER;          
REMARK 470 I=INSERTION CODE):                                                   
REMARK 470   M RES CSSEQI  ATOMS                                                
REMARK 470     ARG A  13    CZ   NH1  NH2                                       
REMARK 470     ARG A  40    CB   CG   CD   NE   CZ   NH1  NH2                   
REMARK 470     LEU A  41    CG   CD1  CD2                                       
REMARK 470     SER A  43    CB   OG                                             
REMARK 470     ASP A  44    CB   CG   OD1  OD2                                  
REMARK 470     LYS A  45    CB   CG   CD   CE   NZ                              
REMARK 470     ARG A  48    NH1  NH2                                            
REMARK 470     ILE A 101    CG1  CG2  CD1                                       
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   O    HOH A   507     O    HOH A   536              1.93            
REMARK 500   O    HOH A   503     O    HOH A   608              2.03            
REMARK 500   O    HOH A   524     O    HOH A   536              2.05            
REMARK 500   O    HOH A   658     O    HOH A   663              2.07            
REMARK 500   OD1  ASN A    92     O    HOH A   501              2.10            
REMARK 500   OD1  ASN A    95     O    HOH A   502              2.13            
REMARK 500   O    HOH A   536     O    HOH A   619              2.14            
REMARK 500   O    HOH A   536     O    HOH A   628              2.14            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS                                             
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC             
REMARK 500 SYMMETRY ARE IN CLOSE CONTACT.  AN ATOM LOCATED WITHIN 0.15          
REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A           
REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375             
REMARK 500 INSTEAD OF REMARK 500.  ATOMS WITH NON-BLANK ALTERNATE               
REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS.            
REMARK 500                                                                      
REMARK 500 DISTANCE CUTOFF:                                                     
REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS              
REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS                  
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI  SSYMOP   DISTANCE          
REMARK 500   O    HOH A   502     O    HOH A   502     2555     1.83            
REMARK 500   O    HOH A   559     O    HOH A   591     4546     1.96            
REMARK 500   O    HOH A   510     O    HOH A   510     2555     2.11            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 525                                                                      
REMARK 525 SOLVENT                                                              
REMARK 525                                                                      
REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT                    
REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST                  
REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT                 
REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE                       
REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER;                             
REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE                  
REMARK 525 NUMBER; I=INSERTION CODE):                                           
REMARK 525                                                                      
REMARK 525  M RES CSSEQI                                                        
REMARK 525    HOH A 667        DISTANCE =  6.36 ANGSTROMS                       
DBREF  7EPJ A    1   101  UNP    P62554   CCDB_ECOLI       1    101             
SEQADV 7EPJ LEU A   46  UNP  P62554    VAL    46 ENGINEERED MUTATION            
SEQRES   1 A  101  MET GLN PHE LYS VAL TYR THR TYR LYS ARG GLU SER ARG          
SEQRES   2 A  101  TYR ARG LEU PHE VAL ASP VAL GLN SER ASP ILE ILE ASP          
SEQRES   3 A  101  THR PRO GLY ARG ARG MET VAL ILE PRO LEU ALA SER ALA          
SEQRES   4 A  101  ARG LEU LEU SER ASP LYS LEU SER ARG GLU LEU TYR PRO          
SEQRES   5 A  101  VAL VAL HIS ILE GLY ASP GLU SER TRP ARG MET MET THR          
SEQRES   6 A  101  THR ASP MET ALA SER VAL PRO VAL SER VAL ILE GLY GLU          
SEQRES   7 A  101  GLU VAL ALA ASP LEU SER HIS ARG GLU ASN ASP ILE LYS          
SEQRES   8 A  101  ASN ALA ILE ASN LEU MET PHE TRP GLY ILE                      
HET     CL  A 400       1                                                       
HET     CL  A 401       1                                                       
HETNAM      CL CHLORIDE ION                                                     
FORMUL   2   CL    2(CL 1-)                                                     
FORMUL   4  HOH   *167(H2 O)                                                    
HELIX    1 AA1 THR A   65  MET A   68  5                                   4    
HELIX    2 AA2 ARG A   86  GLY A  100  1                                  15    
SHEET    1 AA1 4 VAL A  53  ILE A  56  0                                        
SHEET    2 AA1 4 GLU A  59  MET A  63 -1  O  TRP A  61   N  VAL A  54           
SHEET    3 AA1 4 ARG A  30  SER A  38 -1  N  ALA A  37   O  ARG A  62           
SHEET    4 AA1 4 ALA A  69  PRO A  72 -1  O  VAL A  71   N  ARG A  31           
SHEET    1 AA2 6 VAL A  53  ILE A  56  0                                        
SHEET    2 AA2 6 GLU A  59  MET A  63 -1  O  TRP A  61   N  VAL A  54           
SHEET    3 AA2 6 ARG A  30  SER A  38 -1  N  ALA A  37   O  ARG A  62           
SHEET    4 AA2 6 LEU A  16  ASP A  19 -1  N  VAL A  18   O  ILE A  34           
SHEET    5 AA2 6 LYS A   4  TYR A   8 -1  N  LYS A   4   O  ASP A  19           
SHEET    6 AA2 6 ILE A  76  ASP A  82 -1  O  ALA A  81   N  VAL A   5           
CRYST1   75.100   36.760   35.910  90.00 115.19  90.00 C 1 2 1       4          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.013316  0.000000  0.006263        0.00000                         
SCALE2      0.000000  0.027203  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.030774        0.00000