PDB Short entry for 6CHY
HEADER    SIGNAL TRANSDUCTION PROTEIN             29-AUG-96   6CHY              
TITLE     STRUCTURE OF CHEMOTAXIS PROTEIN CHEY                                  
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: CHEY;                                                      
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 ENGINEERED: YES;                                                     
COMPND   5 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI K12;                           
SOURCE   3 ORGANISM_TAXID: 83333;                                               
SOURCE   4 STRAIN: K-12;                                                        
SOURCE   5 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   6 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   7 EXPRESSION_SYSTEM_VECTOR_TYPE: BACTERIAL;                            
SOURCE   8 EXPRESSION_SYSTEM_PLASMID: CHEY                                      
KEYWDS    RESPONSE REGULATORS, TWO-COMPONENT SYSTEMS, SIGNAL TRANSDUCTION       
KEYWDS   2 PROTEIN                                                              
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    X.ZHU,J.REBELLO,P.MATSUMURA,K.VOLZ                                    
REVDAT   3   03-NOV-21 6CHY    1       REMARK SEQADV                            
REVDAT   2   24-FEB-09 6CHY    1       VERSN                                    
REVDAT   1   07-DEC-96 6CHY    0                                                
JRNL        AUTH   X.ZHU,J.REBELLO,P.MATSUMURA,K.VOLZ                           
JRNL        TITL   CRYSTAL STRUCTURES OF CHEY MUTANTS Y106W AND T87I/Y106W.     
JRNL        TITL 2 CHEY ACTIVATION CORRELATES WITH MOVEMENT OF RESIDUE 106.     
JRNL        REF    J.BIOL.CHEM.                  V. 272  5000 1997              
JRNL        REFN                   ISSN 0021-9258                               
JRNL        PMID   9030562                                                      
JRNL        DOI    10.1074/JBC.272.38.23758                                     
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   X.ZHU,C.D.AMSLER,K.VOLZ,P.MATSUMURA                          
REMARK   1  TITL   TYROSINE 106 PLAYS AN IMPORTANT ROLE IN CHEMOTAXIS SIGNAL    
REMARK   1  TITL 2 TRANSDUCTION IN ESCHERICHIA COLI                             
REMARK   1  REF    J.BACTERIOL.                  V. 178  4208 1996              
REMARK   1  REFN                   ISSN 0021-9193                               
REMARK   1 REFERENCE 2                                                          
REMARK   1  AUTH   S.GANGULI,H.WANG,P.MATSUMURA,K.VOLZ                          
REMARK   1  TITL   UNCOUPLED PHOSPHORYLATION AND ACTIVATION IN BACTERIAL        
REMARK   1  TITL 2 CHEMOTAXIS. THE 2.1-A STRUCTURE OF A THREONINE TO ISOLEUCINE 
REMARK   1  TITL 3 MUTANT AT POSITION 87 OF CHEY                                
REMARK   1  REF    J.BIOL.CHEM.                  V. 270 17386 1995              
REMARK   1  REFN                   ISSN 0021-9258                               
REMARK   1 REFERENCE 3                                                          
REMARK   1  AUTH   K.VOLZ                                                       
REMARK   1  TITL   STRUCTURAL CONSERVATION IN THE CHEY SUPERFAMILY              
REMARK   1  REF    BIOCHEMISTRY                  V.  32 11741 1993              
REMARK   1  REFN                   ISSN 0006-2960                               
REMARK   1 REFERENCE 4                                                          
REMARK   1  AUTH   K.VOLZ,P.MATSUMURA                                           
REMARK   1  TITL   CRYSTAL STRUCTURE OF ESCHERICHIA COLI CHEY REFINED AT 1.7-A  
REMARK   1  TITL 2 RESOLUTION                                                   
REMARK   1  REF    J.BIOL.CHEM.                  V. 266 15511 1991              
REMARK   1  REFN                   ISSN 0021-9258                               
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.33 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : PROFFT                                               
REMARK   3   AUTHORS     : KONNERT,HENDRICKSON,FINZEL                           
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.33                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 10.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 2.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 72.5                           
REMARK   3   NUMBER OF REFLECTIONS             : 7698                           
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : NULL                            
REMARK   3   FREE R VALUE TEST SET SELECTION  : NULL                            
REMARK   3   R VALUE     (WORKING + TEST SET) : NULL                            
REMARK   3   R VALUE            (WORKING SET) : 0.185                           
REMARK   3   FREE R VALUE                     : NULL                            
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : NULL                            
REMARK   3   FREE R VALUE TEST SET COUNT      : NULL                            
REMARK   3                                                                      
REMARK   3  FIT/AGREEMENT OF MODEL WITH ALL DATA.                               
REMARK   3   R VALUE   (WORKING + TEST SET, NO CUTOFF) : NULL                   
REMARK   3   R VALUE          (WORKING SET, NO CUTOFF) : NULL                   
REMARK   3   FREE R VALUE                  (NO CUTOFF) : NULL                   
REMARK   3   FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : NULL                   
REMARK   3   FREE R VALUE TEST SET COUNT   (NO CUTOFF) : NULL                   
REMARK   3   TOTAL NUMBER OF REFLECTIONS   (NO CUTOFF) : NULL                   
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 1951                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 5                                       
REMARK   3   SOLVENT ATOMS            : 177                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 11.04                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : NULL                                                 
REMARK   3    B22 (A**2) : NULL                                                 
REMARK   3    B33 (A**2) : NULL                                                 
REMARK   3    B12 (A**2) : NULL                                                 
REMARK   3    B13 (A**2) : NULL                                                 
REMARK   3    B23 (A**2) : NULL                                                 
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : NULL                            
REMARK   3   ESD FROM SIGMAA              (A) : NULL                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : NULL                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   DISTANCE RESTRAINTS.                    RMS    SIGMA               
REMARK   3    BOND LENGTH                     (A) : 0.014 ; 0.020               
REMARK   3    ANGLE DISTANCE                  (A) : 0.048 ; 0.040               
REMARK   3    INTRAPLANAR 1-4 DISTANCE        (A) : 0.049 ; 0.050               
REMARK   3    H-BOND OR METAL COORDINATION    (A) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3   PLANE RESTRAINT                  (A) : 0.011 ; 0.020               
REMARK   3   CHIRAL-CENTER RESTRAINT       (A**3) : 0.163 ; 0.150               
REMARK   3                                                                      
REMARK   3   NON-BONDED CONTACT RESTRAINTS.                                     
REMARK   3    SINGLE TORSION                  (A) : 0.200 ; 0.500               
REMARK   3    MULTIPLE TORSION                (A) : 0.251 ; 0.500               
REMARK   3    H-BOND (X...Y)                  (A) : 0.275 ; 0.500               
REMARK   3    H-BOND (X-H...Y)                (A) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3   CONFORMATIONAL TORSION ANGLE RESTRAINTS.                           
REMARK   3    SPECIFIED                 (DEGREES) : NULL  ; NULL                
REMARK   3    PLANAR                    (DEGREES) : 2.000 ; 3.000               
REMARK   3    STAGGERED                 (DEGREES) : 20.900; 15.000              
REMARK   3    TRANSVERSE                (DEGREES) : 27.700; 20.000              
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND               (A**2) : 0.605 ; 1.000               
REMARK   3   MAIN-CHAIN ANGLE              (A**2) : 1.029 ; 1.500               
REMARK   3   SIDE-CHAIN BOND               (A**2) : 0.586 ; 1.000               
REMARK   3   SIDE-CHAIN ANGLE              (A**2) : 0.987 ; 1.500               
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 6CHY COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL.                                
REMARK 100 THE DEPOSITION ID IS D_1000179805.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : NULL                               
REMARK 200  TEMPERATURE           (KELVIN) : 80                                 
REMARK 200  PH                             : NULL                               
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : NSLS                               
REMARK 200  BEAMLINE                       : X8C                                
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.033                              
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : NULL                               
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : MADNES                             
REMARK 200  DATA SCALING SOFTWARE          : MADNES                             
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 7861                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.300                              
REMARK 200  RESOLUTION RANGE LOW       (A) : NULL                               
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 72.5                               
REMARK 200  DATA REDUNDANCY                : NULL                               
REMARK 200  R MERGE                    (I) : 0.05100                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : NULL                               
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.33                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.45                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 43.2                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: NULL                                           
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: MERLOT                                                
REMARK 200 STARTING MODEL: MODIFIED WILD-TYPE CHEY                              
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 42.47                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.14                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 18% PEG 3350 AND 0.2 M AMMONIUM          
REMARK 280  SULFATE                                                             
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 2                        
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       47.89000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       38.35000            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       47.89000            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       38.35000            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1, 2, 3                                                 
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 350                                                                      
REMARK 350 BIOMOLECULE: 2                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC                         
REMARK 350 APPLY THE FOLLOWING TO CHAINS: B                                     
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 3                                                       
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 1490 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 11590 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -45.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: B                                     
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   2 -1.000000  0.000000  0.000000       95.78000            
REMARK 350   BIOMT2   2  0.000000 -1.000000  0.000000       76.70000            
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 210  LIES ON A SPECIAL POSITION.                          
REMARK 375      HOH A 211  LIES ON A SPECIAL POSITION.                          
REMARK 375      HOH A 212  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     LYS A   4    CG   CD   CE   NZ                                   
REMARK 470     LYS A  91    CG   CD   CE   NZ                                   
REMARK 470     ARG B  19    CD   NE   CZ   NH1  NH2                             
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   141     O    HOH B   464              2.08            
REMARK 500   ND2  ASN A    44     O    HOH A   190              2.12            
REMARK 500   O    HOH A   137     O    HOH B   448              2.13            
REMARK 500   O    GLU A    89     N    LYS A    91              2.14            
REMARK 500   OD2  ASP B    12     O    HOH B   427              2.17            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS                                      
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3)               
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   RES CSSEQI ATM2   DEVIATION                     
REMARK 500    GLU B 117   CD    GLU B 117   OE1    -0.067                       
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND ANGLES                                       
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1)              
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   ATM2   ATM3                                     
REMARK 500    ASP A   3   CB  -  CG  -  OD1 ANGL. DEV. =   5.7 DEGREES          
REMARK 500    ASP A  12   CB  -  CG  -  OD1 ANGL. DEV. =  -5.5 DEGREES          
REMARK 500    ARG A  18   NE  -  CZ  -  NH1 ANGL. DEV. =   3.3 DEGREES          
REMARK 500    ARG A  19   CD  -  NE  -  CZ  ANGL. DEV. =   9.6 DEGREES          
REMARK 500    ARG A  19   NE  -  CZ  -  NH1 ANGL. DEV. =   6.6 DEGREES          
REMARK 500    ARG A  19   NE  -  CZ  -  NH2 ANGL. DEV. =  -4.4 DEGREES          
REMARK 500    ARG A  22   NE  -  CZ  -  NH1 ANGL. DEV. =   9.1 DEGREES          
REMARK 500    ARG A  22   NE  -  CZ  -  NH2 ANGL. DEV. =  -4.3 DEGREES          
REMARK 500    GLU A  27   CA  -  CB  -  CG  ANGL. DEV. =  27.2 DEGREES          
REMARK 500    LEU A  28   O   -  C   -  N   ANGL. DEV. =  10.3 DEGREES          
REMARK 500    ASN A  31   CA  -  CB  -  CG  ANGL. DEV. =  17.4 DEGREES          
REMARK 500    GLU A  34   CA  -  CB  -  CG  ANGL. DEV. =  17.0 DEGREES          
REMARK 500    ASP A  38   CB  -  CG  -  OD2 ANGL. DEV. =  -5.7 DEGREES          
REMARK 500    GLU A  67   OE1 -  CD  -  OE2 ANGL. DEV. =   7.3 DEGREES          
REMARK 500    THR A  71   CA  -  CB  -  CG2 ANGL. DEV. =   9.1 DEGREES          
REMARK 500    ARG A  73   NE  -  CZ  -  NH1 ANGL. DEV. =   3.1 DEGREES          
REMARK 500    ASP A  75   OD1 -  CG  -  OD2 ANGL. DEV. =  19.0 DEGREES          
REMARK 500    ASP A  75   CB  -  CG  -  OD1 ANGL. DEV. =  -7.7 DEGREES          
REMARK 500    ASP A  75   CB  -  CG  -  OD2 ANGL. DEV. = -11.2 DEGREES          
REMARK 500    GLU A  93   OE1 -  CD  -  OE2 ANGL. DEV. =  -9.7 DEGREES          
REMARK 500    PHE A 111   CB  -  CG  -  CD2 ANGL. DEV. =   4.3 DEGREES          
REMARK 500    PHE A 111   CB  -  CG  -  CD1 ANGL. DEV. =  -5.1 DEGREES          
REMARK 500    MET A 129   CA  -  CB  -  CG  ANGL. DEV. = -10.2 DEGREES          
REMARK 500    ASP B   3   CB  -  CG  -  OD1 ANGL. DEV. =  12.4 DEGREES          
REMARK 500    ASP B   3   CB  -  CG  -  OD2 ANGL. DEV. =  -5.8 DEGREES          
REMARK 500    ASP B  13   CB  -  CG  -  OD1 ANGL. DEV. =  12.1 DEGREES          
REMARK 500    PHE B  14   CB  -  CG  -  CD2 ANGL. DEV. =  -5.7 DEGREES          
REMARK 500    PHE B  14   CB  -  CG  -  CD1 ANGL. DEV. =   6.0 DEGREES          
REMARK 500    ARG B  22   CD  -  NE  -  CZ  ANGL. DEV. =  16.4 DEGREES          
REMARK 500    VAL B  33   C   -  N   -  CA  ANGL. DEV. =  16.0 DEGREES          
REMARK 500    TYR B  51   CB  -  CG  -  CD2 ANGL. DEV. =   4.2 DEGREES          
REMARK 500    TYR B  51   CB  -  CG  -  CD1 ANGL. DEV. =  -5.2 DEGREES          
REMARK 500    GLU B  67   CB  -  CG  -  CD  ANGL. DEV. =  17.7 DEGREES          
REMARK 500    GLU B  67   OE1 -  CD  -  OE2 ANGL. DEV. = -12.4 DEGREES          
REMARK 500    ALA B  80   CA  -  C   -  O   ANGL. DEV. = -13.2 DEGREES          
REMARK 500    ALA B  80   CA  -  C   -  N   ANGL. DEV. =  18.5 DEGREES          
REMARK 500    LEU B  81   N   -  CA  -  CB  ANGL. DEV. = -15.0 DEGREES          
REMARK 500    GLU B  89   OE1 -  CD  -  OE2 ANGL. DEV. =  -7.3 DEGREES          
REMARK 500    GLU B 118   CA  -  CB  -  CG  ANGL. DEV. =  14.1 DEGREES          
REMARK 500    GLU B 118   OE1 -  CD  -  OE2 ANGL. DEV. =   9.3 DEGREES          
REMARK 500    GLU B 118   CG  -  CD  -  OE2 ANGL. DEV. = -12.1 DEGREES          
REMARK 500    LYS B 126   N   -  CA  -  CB  ANGL. DEV. =  11.0 DEGREES          
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    GLU A  27        9.36    -58.87                                   
REMARK 500    ASP A  57     -167.92    -73.00                                   
REMARK 500    ASN A  62      -55.67     71.68                                   
REMARK 500    SER A  79      -33.52    -37.76                                   
REMARK 500    ALA A  90       47.75    -55.16                                   
REMARK 500    MET B  60      148.06   -175.66                                   
REMARK 500    ASN B  62      -66.64     76.93                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 B 401                 
DBREF  6CHY A    2   129  UNP    P06143   CHEY_ECOLI       1    128             
DBREF  6CHY B    2   129  UNP    P06143   CHEY_ECOLI       1    128             
SEQADV 6CHY ILE A   87  UNP  P06143    THR    86 ENGINEERED MUTATION            
SEQADV 6CHY TRP A  106  UNP  P06143    TYR   105 ENGINEERED MUTATION            
SEQADV 6CHY ILE B   87  UNP  P06143    THR    86 ENGINEERED MUTATION            
SEQADV 6CHY TRP B  106  UNP  P06143    TYR   105 ENGINEERED MUTATION            
SEQRES   1 A  128  ALA ASP LYS GLU LEU LYS PHE LEU VAL VAL ASP ASP PHE          
SEQRES   2 A  128  SER THR MET ARG ARG ILE VAL ARG ASN LEU LEU LYS GLU          
SEQRES   3 A  128  LEU GLY PHE ASN ASN VAL GLU GLU ALA GLU ASP GLY VAL          
SEQRES   4 A  128  ASP ALA LEU ASN LYS LEU GLN ALA GLY GLY TYR GLY PHE          
SEQRES   5 A  128  VAL ILE SER ASP TRP ASN MET PRO ASN MET ASP GLY LEU          
SEQRES   6 A  128  GLU LEU LEU LYS THR ILE ARG ALA ASP GLY ALA MET SER          
SEQRES   7 A  128  ALA LEU PRO VAL LEU MET VAL ILE ALA GLU ALA LYS LYS          
SEQRES   8 A  128  GLU ASN ILE ILE ALA ALA ALA GLN ALA GLY ALA SER GLY          
SEQRES   9 A  128  TRP VAL VAL LYS PRO PHE THR ALA ALA THR LEU GLU GLU          
SEQRES  10 A  128  LYS LEU ASN LYS ILE PHE GLU LYS LEU GLY MET                  
SEQRES   1 B  128  ALA ASP LYS GLU LEU LYS PHE LEU VAL VAL ASP ASP PHE          
SEQRES   2 B  128  SER THR MET ARG ARG ILE VAL ARG ASN LEU LEU LYS GLU          
SEQRES   3 B  128  LEU GLY PHE ASN ASN VAL GLU GLU ALA GLU ASP GLY VAL          
SEQRES   4 B  128  ASP ALA LEU ASN LYS LEU GLN ALA GLY GLY TYR GLY PHE          
SEQRES   5 B  128  VAL ILE SER ASP TRP ASN MET PRO ASN MET ASP GLY LEU          
SEQRES   6 B  128  GLU LEU LEU LYS THR ILE ARG ALA ASP GLY ALA MET SER          
SEQRES   7 B  128  ALA LEU PRO VAL LEU MET VAL ILE ALA GLU ALA LYS LYS          
SEQRES   8 B  128  GLU ASN ILE ILE ALA ALA ALA GLN ALA GLY ALA SER GLY          
SEQRES   9 B  128  TRP VAL VAL LYS PRO PHE THR ALA ALA THR LEU GLU GLU          
SEQRES  10 B  128  LYS LEU ASN LYS ILE PHE GLU LYS LEU GLY MET                  
HET    SO4  B 401       5                                                       
HETNAM     SO4 SULFATE ION                                                      
FORMUL   3  SO4    O4 S 2-                                                      
FORMUL   4  HOH   *177(H2 O)                                                    
HELIX    1   1 SER A   15  LEU A   28  1                                  14    
HELIX    2   2 GLY A   39  ALA A   48  1                                  10    
HELIX    3   3 GLY A   65  ALA A   74  1                                  10    
HELIX    4   4 LYS A   92  GLN A  100  1                                   9    
HELIX    5   5 ALA A  113  LEU A  127  1                                  15    
HELIX    6   6 SER B   15  LEU B   28  1                                  14    
HELIX    7   7 GLY B   39  ALA B   48  1                                  10    
HELIX    8   8 GLY B   65  ARG B   73  1                                   9    
HELIX    9   9 LYS B   92  GLN B  100  1                                   9    
HELIX   10  10 ALA B  113  LEU B  127  1                                  15    
SHEET    1   A 5 VAL A  33  ALA A  36  0                                        
SHEET    2   A 5 PHE A   8  VAL A  11  1  N  PHE A   8   O  GLU A  34           
SHEET    3   A 5 PHE A  53  SER A  56  1  N  PHE A  53   O  LEU A   9           
SHEET    4   A 5 PRO A  82  ILE A  87  1  N  PRO A  82   O  VAL A  54           
SHEET    5   A 5 GLY A 105  VAL A 108  1  N  GLY A 105   O  MET A  85           
SHEET    1   B 5 VAL B  33  ALA B  36  0                                        
SHEET    2   B 5 PHE B   8  VAL B  11  1  N  PHE B   8   O  GLU B  34           
SHEET    3   B 5 PHE B  53  ASP B  57  1  N  PHE B  53   O  LEU B   9           
SHEET    4   B 5 PRO B  82  ILE B  87  1  N  PRO B  82   O  VAL B  54           
SHEET    5   B 5 GLY B 105  VAL B 108  1  N  GLY B 105   O  MET B  85           
CISPEP   1 LYS A  109    PRO A  110          0         0.49                     
CISPEP   2 LYS B  109    PRO B  110          0         3.73                     
SITE     1 AC1  8 ASP B  13  PHE B  14  SER B  15  LYS B  91                    
SITE     2 AC1  8 LYS B  92  GLU B  93  HOH B 454  HOH B 466                    
CRYST1   95.780   76.700   32.640  90.00  90.00  90.00 P 21 21 2     8          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.010441  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.013038  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.030637        0.00000                         
MTRIX1   1 -0.788220 -0.615390  0.000580       76.95360    1                    
MTRIX2   1 -0.615200  0.787950 -0.025620       26.92400    1                    
MTRIX3   1  0.015310 -0.020550 -0.999670       36.84230    1