HEADER    TRANSCRIPTION/GENE REGULATION           14-JAN-00   1DU7              
OBSLTE     23-MAR-11 1DU7      2X9D                                             
TITLE     CRYSTAL STRUCTURE OF TET REPRESSOR CLASS D WITH 4-EPI-TETRACYCLINE    
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: PROTEIN (TETRACYCLINE REPRESSOR PROTEIN CLASS D);          
COMPND   3 CHAIN: A;                                                            
COMPND   4 ENGINEERED: YES;                                                     
COMPND   5 MUTATION: YES;                                                       
COMPND   6 OTHER_DETAILS: COMPLEXED WITH 7-CHLOROTETRACYCLINE                   
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI;                               
SOURCE   3 ORGANISM_TAXID: 562;                                                 
SOURCE   4 OTHER_DETAILS: ALA 1 FROM SWISS-PROT ENTRY P09164 WAS SUBSTITUTED TO 
SOURCE   5 SER AND RENUMBERED TO SER 2. RESIDUES 153 TILL 161 FROM THE SEQUENCE 
SOURCE   6 WERE NOT MODELLED.                                                   
KEYWDS    TRANSCRIPTION REGULATION, DNA-BINDING PROTEIN, HTH-MOTIF,             
KEYWDS   2 TRANSCRIPTION-GENE REGULATION COMPLEX                                
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    P.ORTH,W.SAENGER,W.HINRICHS                                           
REVDAT   3   23-MAR-11 1DU7    1       OBSLTE                                   
REVDAT   2   24-FEB-09 1DU7    1       VERSN                                    
REVDAT   1   20-MAR-00 1DU7    0                                                
JRNL        AUTH   P.ORTH,D.SCHNAPPINGER,W.HILLEN,W.SAENGER,W.HINRICHS          
JRNL        TITL   STRUCTURAL BASIS OF GENE REGULATION BY THE TETRACYCLINE      
JRNL        TITL 2 INDUCIBLE TET REPRESSOR-OPERATOR SYSTEM.                     
JRNL        REF    NAT.STRUCT.BIOL.              V.   7   215 2000              
JRNL        REFN                   ISSN 1072-8368                               
JRNL        PMID   10700280                                                     
JRNL        DOI    10.1038/73324                                                
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.51 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS 0.9                                              
REMARK   3   AUTHORS     : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE-              
REMARK   3               : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU,              
REMARK   3               : READ,RICE,SIMONSON,WARREN                            
REMARK   3                                                                      
REMARK   3  REFINEMENT TARGET : ENGH & HUBER                                    
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.51                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 33.47                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 2115676.700                    
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : 0.0000                         
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 93.8                           
REMARK   3   NUMBER OF REFLECTIONS             : 7565                           
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 SET) : 0.227                           
REMARK   3   FREE R VALUE                     : 0.280                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 10.700                          
REMARK   3   FREE R VALUE TEST SET COUNT      : 807                             
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : 0.010                           
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 6                            
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.51                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.67                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 97.30                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 1145                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.3370                       
REMARK   3   BIN FREE R VALUE                    : 0.4050                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 10.30                        
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 131                          
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.035                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 1578                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 33                                      
REMARK   3   SOLVENT ATOMS            : 41                                      
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 56.70                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 67.50                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 7.14000                                              
REMARK   3    B22 (A**2) : 7.14000                                              
REMARK   3    B33 (A**2) : -14.28000                                            
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : 0.36                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.46                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : 5.00                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : 0.48                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.65                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.011                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.40                            
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 18.00                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 1.26                            
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : RESTRAINED                                
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : 2.810 ; 1.500                
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : 4.510 ; 2.000                
REMARK   3   SIDE-CHAIN BOND              (A**2) : 3.950 ; 2.000                
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : 5.900 ; 2.500                
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : FLAT MODEL                                           
REMARK   3   KSOL        : 0.33                                                 
REMARK   3   BSOL        : 69.37                                                
REMARK   3                                                                      
REMARK   3  NCS MODEL : NULL                                                    
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS.                         RMS   SIGMA/WEIGHT          
REMARK   3   GROUP  1  POSITIONAL            (A) : NULL  ; NULL                 
REMARK   3   GROUP  1  B-FACTOR           (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  PARAMETER FILE  1  : PROTEIN_REP.PA                                 
REMARK   3  PARAMETER FILE  2  : EPI_XPLOR_PAR.TXT                              
REMARK   3  PARAMETER FILE  3  : WATER_REP.PARA                                 
REMARK   3  PARAMETER FILE  4  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : PROTEIN.TOP                                    
REMARK   3  TOPOLOGY FILE  2   : CTC_XPLOR_TOP.TXT                              
REMARK   3  TOPOLOGY FILE  3   : WATER.TOP                                      
REMARK   3  TOPOLOGY FILE  4   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1DU7 COMPLIES WITH FORMAT V. 3.15, 01-DEC-08                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 27-JAN-00.                  
REMARK 100 THE RCSB ID CODE IS RCSB010372.                                      
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 17-NOV-95                          
REMARK 200  TEMPERATURE           (KELVIN) : 277                                
REMARK 200  PH                             : 8                                  
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : SRS                                
REMARK 200  BEAMLINE                       : PX9.6                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.87                               
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : MARRESEARCH                        
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : CCP4 (SCALA)                       
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 7661                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.510                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 33.470                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 95.1                               
REMARK 200  DATA REDUNDANCY                : 3.720                              
REMARK 200  R MERGE                    (I) : 0.07300                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 4.6000                             
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) : 2.63                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 94.0                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 3.80                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.49600                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL                         
REMARK 200 SOFTWARE USED: CNS                                                   
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 48.13                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.37                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 1M AMMONIUM SULFATE, TRIS HCL, PH 8,     
REMARK 280  VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 291K                     
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: I 41 2 2                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X+1/2,-Y+1/2,Z+1/2                                     
REMARK 290       3555   -Y,X+1/2,Z+1/4                                          
REMARK 290       4555   Y+1/2,-X,Z+3/4                                          
REMARK 290       5555   -X+1/2,Y,-Z+3/4                                         
REMARK 290       6555   X,-Y+1/2,-Z+1/4                                         
REMARK 290       7555   Y+1/2,X+1/2,-Z+1/2                                      
REMARK 290       8555   -Y,-X,-Z                                                
REMARK 290       9555   X+1/2,Y+1/2,Z+1/2                                       
REMARK 290      10555   -X,-Y,Z                                                 
REMARK 290      11555   -Y+1/2,X,Z+3/4                                          
REMARK 290      12555   Y,-X+1/2,Z+1/4                                          
REMARK 290      13555   -X,Y+1/2,-Z+1/4                                         
REMARK 290      14555   X+1/2,-Y,-Z+3/4                                         
REMARK 290      15555   Y,X,-Z                                                  
REMARK 290      16555   -Y+1/2,-X+1/2,-Z+1/2                                    
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       34.76500            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000       34.76500            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       91.40500            
REMARK 290   SMTRY1   3  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  1.000000  0.000000  0.000000       34.76500            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000       45.70250            
REMARK 290   SMTRY1   4  0.000000  1.000000  0.000000       34.76500            
REMARK 290   SMTRY2   4 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000  1.000000      137.10750            
REMARK 290   SMTRY1   5 -1.000000  0.000000  0.000000       34.76500            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   5  0.000000  0.000000 -1.000000      137.10750            
REMARK 290   SMTRY1   6  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       34.76500            
REMARK 290   SMTRY3   6  0.000000  0.000000 -1.000000       45.70250            
REMARK 290   SMTRY1   7  0.000000  1.000000  0.000000       34.76500            
REMARK 290   SMTRY2   7  1.000000  0.000000  0.000000       34.76500            
REMARK 290   SMTRY3   7  0.000000  0.000000 -1.000000       91.40500            
REMARK 290   SMTRY1   8  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   8 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   8  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   9  1.000000  0.000000  0.000000       34.76500            
REMARK 290   SMTRY2   9  0.000000  1.000000  0.000000       34.76500            
REMARK 290   SMTRY3   9  0.000000  0.000000  1.000000       91.40500            
REMARK 290   SMTRY1  10 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2  10  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3  10  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1  11  0.000000 -1.000000  0.000000       34.76500            
REMARK 290   SMTRY2  11  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3  11  0.000000  0.000000  1.000000      137.10750            
REMARK 290   SMTRY1  12  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY2  12 -1.000000  0.000000  0.000000       34.76500            
REMARK 290   SMTRY3  12  0.000000  0.000000  1.000000       45.70250            
REMARK 290   SMTRY1  13 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2  13  0.000000  1.000000  0.000000       34.76500            
REMARK 290   SMTRY3  13  0.000000  0.000000 -1.000000       45.70250            
REMARK 290   SMTRY1  14  1.000000  0.000000  0.000000       34.76500            
REMARK 290   SMTRY2  14  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3  14  0.000000  0.000000 -1.000000      137.10750            
REMARK 290   SMTRY1  15  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY2  15  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3  15  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1  16  0.000000 -1.000000  0.000000       34.76500            
REMARK 290   SMTRY2  16 -1.000000  0.000000  0.000000       34.76500            
REMARK 290   SMTRY3  16  0.000000  0.000000 -1.000000       91.40500            
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 300 REMARK: THE BIOLOGICAL ASSEMBLY IS A                                 
REMARK 300 DIMER CONSTRUCTED FROM CHAIN A                                       
REMARK 300 A SYMMETRY PARTNER GENERATED                                         
REMARK 300 BY THE CRYSTALLOGRAPHIC                                              
REMARK 300 TWO-FOLD AXIS -X, -Y, Z.                                             
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: 7110 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 19420 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -51.0 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       69.53000            
REMARK 350   BIOMT2   2  0.000000 -1.000000  0.000000       69.53000            
REMARK 350   BIOMT3   2  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     ALA A   154                                                      
REMARK 465     LEU A   155                                                      
REMARK 465     THR A   156                                                      
REMARK 465     ASP A   157                                                      
REMARK 465     ARG A   158                                                      
REMARK 465     PRO A   159                                                      
REMARK 465     ALA A   160                                                      
REMARK 465     ALA A   161                                                      
REMARK 465     PRO A   162                                                      
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    TYR A  66       70.82   -100.30                                   
REMARK 500    PRO A 105      124.35    -39.91                                   
REMARK 500    ALA A 144      -71.82    -50.74                                   
REMARK 500    GLU A 150      -19.18    -48.72                                   
REMARK 500    HIS A 151      -64.68    -94.22                                   
REMARK 500    THR A 152       22.26    -53.52                                   
REMARK 500    GLU A 164      -85.74    -57.15                                   
REMARK 500    ASN A 165      -22.02    -38.37                                   
REMARK 500    LEU A 174      -18.99    -46.67                                   
REMARK 500    LEU A 204      -83.33     63.01                                   
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 CTC A 210                 
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 2TCT   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 2TRT   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1A6I   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1BJ0   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1BJY   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 1BJZ   RELATED DB: PDB                                   
DBREF  1DU7 A    2   208  UNP    P0ACT4   TETR4_ECOLI      1    207             
SEQADV 1DU7 SER A    2  UNP  P0ACT4    ALA     2 MUTATION                       
SEQRES   1 A  207  SER ARG LEU ASN ARG GLU SER VAL ILE ASP ALA ALA LEU          
SEQRES   2 A  207  GLU LEU LEU ASN GLU THR GLY ILE ASP GLY LEU THR THR          
SEQRES   3 A  207  ARG LYS LEU ALA GLN LYS LEU GLY ILE GLU GLN PRO THR          
SEQRES   4 A  207  LEU TYR TRP HIS VAL LYS ASN LYS ARG ALA LEU LEU ASP          
SEQRES   5 A  207  ALA LEU ALA VAL GLU ILE LEU ALA ARG HIS HIS ASP TYR          
SEQRES   6 A  207  SER LEU PRO ALA ALA GLY GLU SER TRP GLN SER PHE LEU          
SEQRES   7 A  207  ARG ASN ASN ALA MET SER PHE ARG ARG ALA LEU LEU ARG          
SEQRES   8 A  207  TYR ARG ASP GLY ALA LYS VAL HIS LEU GLY THR ARG PRO          
SEQRES   9 A  207  ASP GLU LYS GLN TYR ASP THR VAL GLU THR GLN LEU ARG          
SEQRES  10 A  207  PHE MET THR GLU ASN GLY PHE SER LEU ARG ASP GLY LEU          
SEQRES  11 A  207  TYR ALA ILE SER ALA VAL SER HIS PHE THR LEU GLY ALA          
SEQRES  12 A  207  VAL LEU GLU GLN GLN GLU HIS THR ALA ALA LEU THR ASP          
SEQRES  13 A  207  ARG PRO ALA ALA PRO ASP GLU ASN LEU PRO PRO LEU LEU          
SEQRES  14 A  207  ARG GLU ALA LEU GLN ILE MET ASP SER ASP ASP GLY GLU          
SEQRES  15 A  207  GLN ALA PHE LEU HIS GLY LEU GLU SER LEU ILE ARG GLY          
SEQRES  16 A  207  PHE GLU VAL GLN LEU THR ALA LEU LEU GLN ILE VAL              
HET    CTC  A 210      33                                                       
HETNAM     CTC 7-CHLOROTETRACYCLINE                                             
FORMUL   2  CTC    C22 H23 CL N2 O8                                             
FORMUL   3  HOH   *41(H2 O)                                                     
HELIX    1   1 ASN A    5  GLY A   21  1                                  17    
HELIX    2   2 THR A   20  LEU A   25  1                                   6    
HELIX    3   3 THR A   26  LEU A   34  1                                   9    
HELIX    4   4 GLU A   37  VAL A   45  1                                   9    
HELIX    5   5 ASN A   47  HIS A   64  1                                  18    
HELIX    6   6 SER A   74  ARG A   92  1                                  19    
HELIX    7   7 ASP A   95  GLY A  102  1                                   8    
HELIX    8   8 ASP A  106  LYS A  108  5                                   3    
HELIX    9   9 GLN A  109  GLU A  122  1                                  14    
HELIX   10  10 SER A  126  THR A  152  1                                  27    
HELIX   11  11 PRO A  167  MET A  177  1                                  11    
HELIX   12  12 GLY A  182  THR A  202  1                                  21    
SITE     1 AC1 16 HIS A  64  SER A  67  ASN A  82  PHE A  86                    
SITE     2 AC1 16 HIS A 100  ARG A 104  PRO A 105  THR A 112                    
SITE     3 AC1 16 VAL A 113  GLN A 116  LEU A 131  ILE A 134                    
SITE     4 AC1 16 SER A 138  LEU A 174  HOH A 235  HOH A 244                    
CRYST1   69.530   69.530  182.810  90.00  90.00  90.00 I 41 2 2     16          
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      0.014382  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.014382  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.005470        0.00000