HEADER    TRANSCRIPTIONAL ACTIVATOR               08-APR-02   1GXP              
TITLE     PHOB EFFECTOR DOMAIN IN COMPLEX WITH PHO BOX DNA.                     
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: PHOSPHATE REGULON TRANSCRIPTIONAL REGULATORY PROTEIN;      
COMPND   3 CHAIN: A, B, E, F;                                                   
COMPND   4 FRAGMENT: DNA-BINDING AND TRANSACTIVATION DOMAIN, RESIDUES 124-229;  
COMPND   5 SYNONYM: PHOB;                                                       
COMPND   6 ENGINEERED: YES;                                                     
COMPND   7 OTHER_DETAILS: BOUND TO DNA, DNA CHAINS C, D, G, H;                  
COMPND   8 MOL_ID: 2;                                                           
COMPND   9 MOLECULE: 5'-D(*GP*AP*GP*CP*TP*GP*TP*CP*AP*TP*                       
COMPND  10 AP*AP*AP*GP*TP*TP*GP*TP*CP*AP*CP*GP*G)-3';                           
COMPND  11 CHAIN: C, G;                                                         
COMPND  12 ENGINEERED: YES;                                                     
COMPND  13 MOL_ID: 3;                                                           
COMPND  14 MOLECULE: 5'-D(*CP*CP*CP*GP*TP*GP*AP*CP*AP*AP*                       
COMPND  15 CP*TP*TP*TP*AP*TP*GP*AP*CP*AP*GP*CP*T)-3';                           
COMPND  16 CHAIN: D, H;                                                         
COMPND  17 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI;                               
SOURCE   3 ORGANISM_TAXID: 562;                                                 
SOURCE   4 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   5 EXPRESSION_SYSTEM_TAXID: 469008;                                     
SOURCE   6 EXPRESSION_SYSTEM_STRAIN: BL21(DE3);                                 
SOURCE   7 EXPRESSION_SYSTEM_VECTOR: ESCHERICHIA COLI;                          
SOURCE   8 EXPRESSION_SYSTEM_PLASMID: PBAT4;                                    
SOURCE   9 OTHER_DETAILS: PCR-CLONED DOMAIN FROM GENOMIC DNA;                   
SOURCE  10 MOL_ID: 2;                                                           
SOURCE  11 SYNTHETIC: YES;                                                      
SOURCE  12 MOL_ID: 3;                                                           
SOURCE  13 SYNTHETIC: YES                                                       
KEYWDS    TRANSCRIPTIONAL ACTIVATOR, HELIX-WINGED-HELIX, SENSORY TRANSDUCTION,  
KEYWDS   2 PHOSPHORYLATION, DNA BINDING, ACTIVATOR, TWO- COMPONENT SIGNAL       
KEYWDS   3 TRANSDUCTION                                                         
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    A.G.BLANCO,M.SOLA,F.X.GOMIS-RUTH,M.COLL                               
REVDAT   4   08-MAY-24 1GXP    1       SHEET                                    
REVDAT   3   24-FEB-09 1GXP    1       VERSN                                    
REVDAT   2   22-MAY-02 1GXP    1       COMPND SEQRES                            
REVDAT   1   29-APR-02 1GXP    0                                                
JRNL        AUTH   A.G.BLANCO,M.SOLA,F.X.GOMIS-RUTH,M.COLL                      
JRNL        TITL   TANDEM DNA RECOGNITION BY TWO-COMPONENT SIGNAL TRANSDUCTION  
JRNL        TITL 2 TRANSCRIPTIONAL ACTIVATOR PHOB                               
JRNL        REF    STRUCTURE                     V.  10   701 2002              
JRNL        REFN                   ISSN 0969-2126                               
JRNL        PMID   12015152                                                     
JRNL        DOI    10.1016/S0969-2126(02)00761-X                                
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.50 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC                                               
REMARK   3   AUTHORS     : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER,              
REMARK   3               : NICHOLLS,WINN,LONG,VAGIN                             
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.50                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 40.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 1.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 100.0                          
REMARK   3   NUMBER OF REFLECTIONS             : 29662                          
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) : 0.247                           
REMARK   3   R VALUE            (WORKING SET) : 0.244                           
REMARK   3   FREE R VALUE                     : 0.289                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 7.200                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 2131                            
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 3362                                    
REMARK   3   NUCLEIC ACID ATOMS       : 1874                                    
REMARK   3   HETEROGEN ATOMS          : 0                                       
REMARK   3   SOLVENT ATOMS            : 180                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : NULL                           
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 OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): NULL          
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.324         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): NULL          
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): NULL          
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   DISTANCE RESTRAINTS.                    RMS    SIGMA               
REMARK   3    BOND LENGTH                     (A) : NULL  ; NULL                
REMARK   3    ANGLE DISTANCE                  (A) : NULL  ; NULL                
REMARK   3    INTRAPLANAR 1-4 DISTANCE        (A) : NULL  ; NULL                
REMARK   3    H-BOND OR METAL COORDINATION    (A) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3   PLANE RESTRAINT                  (A) : NULL  ; NULL                
REMARK   3   CHIRAL-CENTER RESTRAINT       (A**3) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3   NON-BONDED CONTACT RESTRAINTS.                                     
REMARK   3    SINGLE TORSION                  (A) : NULL  ; NULL                
REMARK   3    MULTIPLE TORSION                (A) : NULL  ; NULL                
REMARK   3    H-BOND (X...Y)                  (A) : NULL  ; NULL                
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) : NULL  ; NULL                
REMARK   3    STAGGERED                 (DEGREES) : NULL  ; NULL                
REMARK   3    TRANSVERSE                (DEGREES) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1GXP COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 08-APR-02.                  
REMARK 100 THE DEPOSITION ID IS D_1290009677.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 15-APR-01                          
REMARK 200  TEMPERATURE           (KELVIN) : 110.0                              
REMARK 200  PH                             : 7.50                               
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : ESRF                               
REMARK 200  BEAMLINE                       : ID14-2                             
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.933                              
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : QUANTUM                            
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : MOSFLM                             
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 29719                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.500                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 64.600                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 2.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 95.8                               
REMARK 200  DATA REDUNDANCY                : 3.200                              
REMARK 200  R MERGE                    (I) : 0.09800                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 5.4000                             
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.50                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.60                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 76.4                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 1.40                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.33800                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 2.100                              
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: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 58.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.90                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PH 7.50                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 61                             
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -Y,X-Y,Z+1/3                                            
REMARK 290       3555   -X+Y,-X,Z+2/3                                           
REMARK 290       4555   -X,-Y,Z+1/2                                             
REMARK 290       5555   Y,-X+Y,Z+5/6                                            
REMARK 290       6555   X-Y,X,Z+1/6                                             
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 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       96.56067            
REMARK 290   SMTRY1   3 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   3 -0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000      193.12133            
REMARK 290   SMTRY1   4 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000  1.000000      144.84100            
REMARK 290   SMTRY1   5  0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   5 -0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   5  0.000000  0.000000  1.000000      241.40167            
REMARK 290   SMTRY1   6  0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   6  0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   6  0.000000  0.000000  1.000000       48.28033            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1, 2                                                    
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: TETRAMERIC                        
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TETRAMERIC                 
REMARK 350 SOFTWARE USED: PQS                                                   
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, C, D                            
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: TETRAMERIC                        
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TETRAMERIC                 
REMARK 350 SOFTWARE USED: PQS                                                   
REMARK 350 APPLY THE FOLLOWING TO CHAINS: E, F, G, H                            
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     SER A   124                                                      
REMARK 465     PRO A   125                                                      
REMARK 465     MET A   126                                                      
REMARK 465     SER B   124                                                      
REMARK 465     PRO B   125                                                      
REMARK 465     MET B   126                                                      
REMARK 465     ALA B   127                                                      
REMARK 465     VAL B   128                                                      
REMARK 465     SER E   124                                                      
REMARK 465     PRO E   125                                                      
REMARK 465     MET E   126                                                      
REMARK 465     ALA E   127                                                      
REMARK 465     SER F   124                                                      
REMARK 465     PRO F   125                                                      
REMARK 465     MET F   126                                                      
REMARK 465     ALA F   127                                                      
REMARK 475                                                                      
REMARK 475 ZERO OCCUPANCY RESIDUES                                              
REMARK 475 THE FOLLOWING RESIDUES WERE MODELED WITH ZERO OCCUPANCY.             
REMARK 475 THE LOCATION AND PROPERTIES OF THESE RESIDUES MAY NOT                
REMARK 475 BE RELIABLE. (M=MODEL NUMBER; RES=RESIDUE NAME;                      
REMARK 475 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE)          
REMARK 475   M RES C  SSEQI                                                     
REMARK 475      DG C     1                                                      
REMARK 475      DG G     1                                                      
REMARK 480                                                                      
REMARK 480 ZERO OCCUPANCY ATOM                                                  
REMARK 480 THE FOLLOWING RESIDUES HAVE ATOMS MODELED WITH ZERO                  
REMARK 480 OCCUPANCY. THE LOCATION AND PROPERTIES OF THESE ATOMS                
REMARK 480 MAY NOT BE RELIABLE. (M=MODEL NUMBER; RES=RESIDUE NAME;              
REMARK 480 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE):         
REMARK 480   M RES C SSEQI ATOMS                                                
REMARK 480     ALA A  127   CB                                                  
REMARK 480     VAL A  128   CB   CG1  CG2                                       
REMARK 480     GLU A  129   OE2                                                 
REMARK 480     GLU A  133   CD   OE1  OE2                                       
REMARK 480     GLU A  150   OE1  OE2                                            
REMARK 480     GLU A  151   OE1                                                 
REMARK 480     GLU A  154   CD   OE1  OE2                                       
REMARK 480     TYR A  189   CG                                                  
REMARK 480     GLU A  191   CG   CD   OE1  OE2                                  
REMARK 480     GLU B  129   CD                                                  
REMARK 480     GLU B  130   OE1  OE2                                            
REMARK 480     ILE B  132   CD1                                                 
REMARK 480     LYS B  161   CG   CD   CE   NZ                                   
REMARK 480     ARG B  172   NH1  NH2                                            
REMARK 480     GLU B  177   CG   OE1  OE2                                       
REMARK 480     GLY B  185   O                                                   
REMARK 480     ASN B  187   OD1                                                 
REMARK 480     VAL B  188   CG2                                                 
REMARK 480     TYR B  189   CZ                                                  
REMARK 480     VAL B  190   CG1  CG2                                            
REMARK 480     LYS B  204   NZ                                                  
REMARK 480      DT C   10   C5'                                                 
REMARK 480      DA D    9   C4'  C3'  O3'  C2'  C1'                             
REMARK 480     GLU E  129   CG   CD   OE1  OE2                                  
REMARK 480     GLU E  130   OE1  OE2                                            
REMARK 480     GLU E  133   CG   CD   OE1  OE2                                  
REMARK 480     GLN E  135   OE1  NE2                                            
REMARK 480     GLU E  177   CG   CD   OE1  OE2                                  
REMARK 480     VAL F  128   CG1  CG2                                            
REMARK 480     GLU F  130   OE1  OE2                                            
REMARK 480     GLN F  135   OE1  NE2                                            
REMARK 480     GLU F  177   CB                                                  
REMARK 480     THR F  186   CB   OG1  CG2                                       
REMARK 480     TYR F  189   CD1  CD2  CE1  CE2  CZ   OH                         
REMARK 480     VAL F  190   CB   CG1  CG2                                       
REMARK 480     PHE F  229   C    O    OXT                                       
REMARK 480      DG G   17   O3'                                                 
REMARK 480      DA H    9   O4'  C2'  C1'                                       
REMARK 480      DT H   23   O5'  C5'  C4'  O4'  C3'                             
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    GLU F 130   N   -  CA  -  C   ANGL. DEV. =  16.9 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    VAL A 128     -102.01    -94.05                                   
REMARK 500    GLU A 129      -72.25   -147.24                                   
REMARK 500    GLN A 135       41.37     34.76                                   
REMARK 500    MET A 155      144.98    178.69                                   
REMARK 500    THR A 186      138.16    177.00                                   
REMARK 500    ASP A 192      -55.44    -17.39                                   
REMARK 500    ARG A 219      125.08    -35.63                                   
REMARK 500    THR B 142      -71.87    -42.56                                   
REMARK 500    MET B 155      142.24    178.34                                   
REMARK 500    TRP B 184      -70.16    -93.83                                   
REMARK 500    VAL B 190      146.66    -29.48                                   
REMARK 500    PRO B 208      -36.54    -38.85                                   
REMARK 500    ARG B 219      123.83    -35.92                                   
REMARK 500    THR B 221      -41.81   -132.33                                   
REMARK 500    GLU E 129       60.93   -151.84                                   
REMARK 500    MET E 155      141.20    169.20                                   
REMARK 500    HIS E 169       53.79   -147.59                                   
REMARK 500    TRP E 184      -73.95    -88.01                                   
REMARK 500    ASN E 187      -14.65     53.14                                   
REMARK 500    VAL E 188      145.01    -35.52                                   
REMARK 500    ARG E 193       -6.16    -58.89                                   
REMARK 500    PRO E 208       21.05    -44.82                                   
REMARK 500    ARG E 219      134.21    -34.00                                   
REMARK 500    THR E 221      -26.00   -140.09                                   
REMARK 500    THR E 227       35.14    -96.87                                   
REMARK 500    GLU F 130      159.22    -25.61                                   
REMARK 500    MET F 155      148.57    171.09                                   
REMARK 500    MET F 167       -8.36    -56.93                                   
REMARK 500    HIS F 169       52.03   -151.73                                   
REMARK 500    ASP F 192      -52.94    -27.30                                   
REMARK 500    PRO F 208      -52.62    -14.30                                   
REMARK 500    ARG F 213        1.29    -57.67                                   
REMARK 500    ARG F 219      134.33    -36.32                                   
REMARK 500    THR F 221      -31.28   -141.41                                   
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 D2003        DISTANCE =  6.26 ANGSTROMS                       
REMARK 525    HOH E2003        DISTANCE =  5.87 ANGSTROMS                       
REMARK 525    HOH F2002        DISTANCE =  6.81 ANGSTROMS                       
REMARK 525    HOH G2001        DISTANCE =  5.82 ANGSTROMS                       
REMARK 525    HOH H2003        DISTANCE =  6.51 ANGSTROMS                       
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1B00   RELATED DB: PDB                                   
REMARK 900 PHOB RECEIVER DOMAIN FROM ESCHERICHIA COLI                           
REMARK 900 RELATED ID: 1GXQ   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF THE PHOB EFFECTOR DOMAIN                        
REMARK 900 RELATED ID: 1QQI   RELATED DB: PDB                                   
REMARK 900 SOLUTION STRUCTURE OF THE DEOXYRIBONUCLEIC ACID-BINDING AND          
REMARK 900 TRANSACTIVATION DOMAIN OF PHOB FROM ESCHERICHIA COLI                 
DBREF  1GXP E  124   229  UNP    P08402   PHOB_ECOLI     124    229             
DBREF  1GXP A  124   229  UNP    P08402   PHOB_ECOLI     124    229             
DBREF  1GXP F  124   229  UNP    P08402   PHOB_ECOLI     124    229             
DBREF  1GXP B  124   229  UNP    P08402   PHOB_ECOLI     124    229             
DBREF  1GXP H    1    23  PDB    1GXP     1GXP             1     23             
DBREF  1GXP G    1    23  PDB    1GXP     1GXP             1     23             
DBREF  1GXP D    1    23  PDB    1GXP     1GXP             1     23             
DBREF  1GXP C    1    23  PDB    1GXP     1GXP             1     23             
SEQRES   1 A  106  SER PRO MET ALA VAL GLU GLU VAL ILE GLU MET GLN GLY          
SEQRES   2 A  106  LEU SER LEU ASP PRO THR SER HIS ARG VAL MET ALA GLY          
SEQRES   3 A  106  GLU GLU PRO LEU GLU MET GLY PRO THR GLU PHE LYS LEU          
SEQRES   4 A  106  LEU HIS PHE PHE MET THR HIS PRO GLU ARG VAL TYR SER          
SEQRES   5 A  106  ARG GLU GLN LEU LEU ASN HIS VAL TRP GLY THR ASN VAL          
SEQRES   6 A  106  TYR VAL GLU ASP ARG THR VAL ASP VAL HIS ILE ARG ARG          
SEQRES   7 A  106  LEU ARG LYS ALA LEU GLU PRO GLY GLY HIS ASP ARG MET          
SEQRES   8 A  106  VAL GLN THR VAL ARG GLY THR GLY TYR ARG PHE SER THR          
SEQRES   9 A  106  ARG PHE                                                      
SEQRES   1 B  106  SER PRO MET ALA VAL GLU GLU VAL ILE GLU MET GLN GLY          
SEQRES   2 B  106  LEU SER LEU ASP PRO THR SER HIS ARG VAL MET ALA GLY          
SEQRES   3 B  106  GLU GLU PRO LEU GLU MET GLY PRO THR GLU PHE LYS LEU          
SEQRES   4 B  106  LEU HIS PHE PHE MET THR HIS PRO GLU ARG VAL TYR SER          
SEQRES   5 B  106  ARG GLU GLN LEU LEU ASN HIS VAL TRP GLY THR ASN VAL          
SEQRES   6 B  106  TYR VAL GLU ASP ARG THR VAL ASP VAL HIS ILE ARG ARG          
SEQRES   7 B  106  LEU ARG LYS ALA LEU GLU PRO GLY GLY HIS ASP ARG MET          
SEQRES   8 B  106  VAL GLN THR VAL ARG GLY THR GLY TYR ARG PHE SER THR          
SEQRES   9 B  106  ARG PHE                                                      
SEQRES   1 C   23   DG  DA  DG  DC  DT  DG  DT  DC  DA  DT  DA  DA  DA          
SEQRES   2 C   23   DG  DT  DT  DG  DT  DC  DA  DC  DG  DG                      
SEQRES   1 D   23   DC  DC  DC  DG  DT  DG  DA  DC  DA  DA  DC  DT  DT          
SEQRES   2 D   23   DT  DA  DT  DG  DA  DC  DA  DG  DC  DT                      
SEQRES   1 E  106  SER PRO MET ALA VAL GLU GLU VAL ILE GLU MET GLN GLY          
SEQRES   2 E  106  LEU SER LEU ASP PRO THR SER HIS ARG VAL MET ALA GLY          
SEQRES   3 E  106  GLU GLU PRO LEU GLU MET GLY PRO THR GLU PHE LYS LEU          
SEQRES   4 E  106  LEU HIS PHE PHE MET THR HIS PRO GLU ARG VAL TYR SER          
SEQRES   5 E  106  ARG GLU GLN LEU LEU ASN HIS VAL TRP GLY THR ASN VAL          
SEQRES   6 E  106  TYR VAL GLU ASP ARG THR VAL ASP VAL HIS ILE ARG ARG          
SEQRES   7 E  106  LEU ARG LYS ALA LEU GLU PRO GLY GLY HIS ASP ARG MET          
SEQRES   8 E  106  VAL GLN THR VAL ARG GLY THR GLY TYR ARG PHE SER THR          
SEQRES   9 E  106  ARG PHE                                                      
SEQRES   1 F  106  SER PRO MET ALA VAL GLU GLU VAL ILE GLU MET GLN GLY          
SEQRES   2 F  106  LEU SER LEU ASP PRO THR SER HIS ARG VAL MET ALA GLY          
SEQRES   3 F  106  GLU GLU PRO LEU GLU MET GLY PRO THR GLU PHE LYS LEU          
SEQRES   4 F  106  LEU HIS PHE PHE MET THR HIS PRO GLU ARG VAL TYR SER          
SEQRES   5 F  106  ARG GLU GLN LEU LEU ASN HIS VAL TRP GLY THR ASN VAL          
SEQRES   6 F  106  TYR VAL GLU ASP ARG THR VAL ASP VAL HIS ILE ARG ARG          
SEQRES   7 F  106  LEU ARG LYS ALA LEU GLU PRO GLY GLY HIS ASP ARG MET          
SEQRES   8 F  106  VAL GLN THR VAL ARG GLY THR GLY TYR ARG PHE SER THR          
SEQRES   9 F  106  ARG PHE                                                      
SEQRES   1 G   23   DG  DA  DG  DC  DT  DG  DT  DC  DA  DT  DA  DA  DA          
SEQRES   2 G   23   DG  DT  DT  DG  DT  DC  DA  DC  DG  DG                      
SEQRES   1 H   23   DC  DC  DC  DG  DT  DG  DA  DC  DA  DA  DC  DT  DT          
SEQRES   2 H   23   DT  DA  DT  DG  DA  DC  DA  DG  DC  DT                      
FORMUL   9  HOH   *180(H2 O)                                                    
HELIX    1   1 PRO A  157  THR A  168  1                                  12    
HELIX    2   2 ARG A  176  TRP A  184  1                                   9    
HELIX    3   3 ASP A  192  LEU A  206  1                                  15    
HELIX    4   4 HIS A  211  ARG A  213  5                                   3    
HELIX    5   5 PRO B  157  THR B  168  1                                  12    
HELIX    6   6 ARG B  176  TRP B  184  1                                   9    
HELIX    7   7 ASP B  192  LEU B  206  1                                  15    
HELIX    8   8 HIS B  211  ARG B  213  5                                   3    
HELIX    9   9 PRO E  157  THR E  168  1                                  12    
HELIX   10  10 ARG E  176  TRP E  184  1                                   9    
HELIX   11  11 ASP E  192  LEU E  206  1                                  15    
HELIX   12  12 HIS E  211  ARG E  213  5                                   3    
HELIX   13  13 PRO F  157  THR F  168  1                                  12    
HELIX   14  14 ARG F  176  TRP F  184  1                                   9    
HELIX   15  15 ASP F  192  LEU F  206  1                                  15    
HELIX   16  16 HIS F  211  ARG F  213  5                                   3    
SHEET    1  AA 4 VAL A 131  MET A 134  0                                        
SHEET    2  AA 4 LEU A 137  ASP A 140 -1  O  LEU A 137   N  MET A 134           
SHEET    3  AA 4 ARG A 145  ALA A 148 -1  O  ARG A 145   N  ASP A 140           
SHEET    4  AA 4 GLU A 151  LEU A 153 -1  O  GLU A 151   N  ALA A 148           
SHEET    1  AB 3 VAL A 215  VAL A 218  0                                        
SHEET    2  AB 3 GLY A 222  SER A 226 -1  O  GLY A 222   N  VAL A 218           
SHEET    3  AB 3 ARG A 172  TYR A 174  1  O  TYR A 174   N  TYR A 223           
SHEET    1  BA 4 VAL B 131  MET B 134  0                                        
SHEET    2  BA 4 LEU B 137  ASP B 140 -1  O  LEU B 137   N  MET B 134           
SHEET    3  BA 4 ARG B 145  ALA B 148 -1  O  ARG B 145   N  ASP B 140           
SHEET    4  BA 4 GLU B 151  LEU B 153 -1  O  GLU B 151   N  ALA B 148           
SHEET    1  BB 3 VAL B 215  VAL B 218  0                                        
SHEET    2  BB 3 GLY B 222  SER B 226 -1  O  GLY B 222   N  VAL B 218           
SHEET    3  BB 3 ARG B 172  TYR B 174  1  O  TYR B 174   N  TYR B 223           
SHEET    1  EA 4 VAL E 131  MET E 134  0                                        
SHEET    2  EA 4 LEU E 137  ASP E 140 -1  O  LEU E 137   N  MET E 134           
SHEET    3  EA 4 ARG E 145  ALA E 148 -1  O  ARG E 145   N  ASP E 140           
SHEET    4  EA 4 GLU E 151  LEU E 153 -1  O  GLU E 151   N  ALA E 148           
SHEET    1  EB 3 VAL E 215  VAL E 218  0                                        
SHEET    2  EB 3 GLY E 222  SER E 226 -1  O  GLY E 222   N  VAL E 218           
SHEET    3  EB 3 ARG E 172  TYR E 174  1  O  TYR E 174   N  TYR E 223           
SHEET    1  FA 4 VAL F 131  MET F 134  0                                        
SHEET    2  FA 4 LEU F 137  ASP F 140 -1  O  LEU F 137   N  MET F 134           
SHEET    3  FA 4 ARG F 145  ALA F 148 -1  O  ARG F 145   N  ASP F 140           
SHEET    4  FA 4 GLU F 151  LEU F 153 -1  O  GLU F 151   N  ALA F 148           
SHEET    1  FB 3 VAL F 215  VAL F 218  0                                        
SHEET    2  FB 3 GLY F 222  SER F 226 -1  O  GLY F 222   N  VAL F 218           
SHEET    3  FB 3 ARG F 172  TYR F 174  1  O  TYR F 174   N  TYR F 223           
CRYST1   74.106   74.106  289.682  90.00  90.00 120.00 P 61         24          
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      0.013495  0.007791  0.000000        0.00000                         
SCALE2      0.000000  0.015583  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.003452        0.00000