HEADER    TRANSCRIPTION                           05-APR-10   2XB5              
TITLE     TET REPRESSOR (CLASS D) IN COMPLEX WITH 7-IODOTETRACYCLINE            
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: TETRACYCLINE REPRESSOR PROTEIN CLASS D;                    
COMPND   3 CHAIN: A;                                                            
COMPND   4 FRAGMENT: RESIDUES 2-208;                                            
COMPND   5 SYNONYM: TET REPRESSOR CLASS D;                                      
COMPND   6 ENGINEERED: YES;                                                     
COMPND   7 OTHER_DETAILS: 7-IODOTETRACYCLINE, MG-COMPLEX                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI;                               
SOURCE   3 ORGANISM_TAXID: 562;                                                 
SOURCE   4 EXPRESSION_SYSTEM: ESCHERICHIA COLI K-12;                            
SOURCE   5 EXPRESSION_SYSTEM_TAXID: 83333;                                      
SOURCE   6 EXPRESSION_SYSTEM_VARIANT: DELTA H1 DELTA TRP;                       
SOURCE   7 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE   8 EXPRESSION_SYSTEM_PLASMID: PWH904                                    
KEYWDS    TRANSCRIPTION, ANTIBIOTIC RESISTANCE, METAL-BINDING, TRANSCRIPTION    
KEYWDS   2 REGULATION                                                           
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    C.KISKER,W.SAENGER,W.HINRICHS                                         
REVDAT   6   08-MAY-24 2XB5    1       REMARK LINK                              
REVDAT   5   09-OCT-19 2XB5    1       JRNL                                     
REVDAT   4   24-JUL-19 2XB5    1       REMARK                                   
REVDAT   3   08-MAY-19 2XB5    1       REMARK                                   
REVDAT   2   07-MAR-18 2XB5    1       SOURCE                                   
REVDAT   1   06-OCT-10 2XB5    0                                                
JRNL        AUTH   W.HINRICHS,C.KISKER,M.DUVEL,A.MULLER,K.TOVAR,W.HILLEN,       
JRNL        AUTH 2 W.SAENGER                                                    
JRNL        TITL   STRUCTURE OF THE TET REPRESSOR-TETRACYCLINE COMPLEX AND      
JRNL        TITL 2 REGULATION OF ANTIBIOTIC RESISTANCE.                         
JRNL        REF    SCIENCE                       V. 264   418 1994              
JRNL        REFN                   ISSN 0036-8075                               
JRNL        PMID   8153629                                                      
JRNL        DOI    10.1126/SCIENCE.8153629                                      
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   C.KISKER,W.HINRICHS,K.TOVAR,W.HILLEN,W.SAENGER               
REMARK   1  TITL   THE COMPLEX FORMED BETWEEN TET REPRESSOR AND                 
REMARK   1  TITL 2 TETRACYCLINE-MG2+ REVEALS MECHANISM OF ANTIBIOTIC            
REMARK   1  TITL 3 RESISTANCE.                                                  
REMARK   1  REF    J.MOL.BIOL.                   V. 247   260 1995              
REMARK   1  REFN                   ISSN 0022-2836                               
REMARK   1  PMID   7707374                                                      
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.50 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.5.0102                                      
REMARK   3   AUTHORS     : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER,              
REMARK   3               : NICHOLLS,WINN,LONG,VAGIN                             
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : MAXIMUM LIKELIHOOD                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.50                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 64.55                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   COMPLETENESS FOR RANGE        (%) : 99.7                           
REMARK   3   NUMBER OF REFLECTIONS             : 7120                           
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) : 0.168                           
REMARK   3   R VALUE            (WORKING SET) : 0.162                           
REMARK   3   FREE R VALUE                     : 0.230                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 9.800                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 777                             
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 20                           
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.50                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.57                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 515                          
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 99.48                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2250                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 55                           
REMARK   3   BIN FREE R VALUE                    : 0.3440                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 1640                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 33                                      
REMARK   3   SOLVENT ATOMS            : 40                                      
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 41.55                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 39.81                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 0.88000                                              
REMARK   3    B22 (A**2) : 0.88000                                              
REMARK   3    B33 (A**2) : -1.76000                                             
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): 1.059         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.293         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.196         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 18.906        
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.961                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.929                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  1703 ; 0.015 ; 0.021       
REMARK   3   BOND LENGTHS OTHERS               (A):  1143 ; 0.002 ; 0.020       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  2317 ; 1.612 ; 1.993       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  2773 ; 1.037 ; 3.000       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   206 ; 5.530 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):    84 ;38.290 ;23.690       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   289 ;21.354 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):    16 ;16.872 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   262 ; 0.097 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  1903 ; 0.007 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):   346 ; 0.001 ; 0.020       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW REFINED ATOMS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND OTHERS            (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.     COUNT   RMS    WEIGHT      
REMARK   3   MAIN-CHAIN BOND REFINED ATOMS  (A**2):  1030 ; 0.720 ; 1.500       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):   418 ; 0.127 ; 1.500       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  1646 ; 1.398 ; 2.000       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):   673 ; 2.220 ; 3.000       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):   671 ; 3.704 ; 4.500       
REMARK   3   SIDE-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B REFINED ATOMS     (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B OTHER ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3 ANISOTROPIC THERMAL FACTOR RESTRAINTS.    COUNT   RMS   WEIGHT       
REMARK   3   RIGID-BOND RESTRAINTS          (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; FREE ATOMS         (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; BONDED ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS STATISTICS                                           
REMARK   3   NUMBER OF DIFFERENT NCS GROUPS : NULL                              
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : 4                                          
REMARK   3                                                                      
REMARK   3   TLS GROUP : 1                                                      
REMARK   3    NUMBER OF COMPONENTS GROUP : 2                                    
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   A     2        A    45                          
REMARK   3    RESIDUE RANGE :   A    46        A    64                          
REMARK   3    ORIGIN FOR THE GROUP (A):  18.9987  28.7800  13.6540              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.0333 T22:   0.1216                                     
REMARK   3      T33:   0.0928 T12:  -0.0045                                     
REMARK   3      T13:  -0.0243 T23:  -0.0243                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   4.6302 L22:   1.0900                                     
REMARK   3      L33:  12.2205 L12:  -0.8766                                     
REMARK   3      L13:   6.9529 L23:  -0.0353                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:   0.1470 S12:   0.3048 S13:   0.0085                       
REMARK   3      S21:  -0.0330 S22:  -0.0981 S23:  -0.0574                       
REMARK   3      S31:   0.2055 S32:   0.3847 S33:  -0.0489                       
REMARK   3                                                                      
REMARK   3   TLS GROUP : 2                                                      
REMARK   3    NUMBER OF COMPONENTS GROUP : 3                                    
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   A    65        A    93                          
REMARK   3    RESIDUE RANGE :   A    94        A   100                          
REMARK   3    RESIDUE RANGE :   A   101        A   106                          
REMARK   3    ORIGIN FOR THE GROUP (A):  23.0964  28.6942  35.7755              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.0564 T22:   0.0853                                     
REMARK   3      T33:   0.1077 T12:  -0.0004                                     
REMARK   3      T13:  -0.0228 T23:  -0.0190                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   1.5750 L22:   1.2632                                     
REMARK   3      L33:   7.3478 L12:  -0.5348                                     
REMARK   3      L13:  -0.3913 L23:  -0.2839                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:   0.0620 S12:   0.0766 S13:  -0.1986                       
REMARK   3      S21:  -0.0129 S22:  -0.0722 S23:   0.1649                       
REMARK   3      S31:   0.5272 S32:  -0.0518 S33:   0.0102                       
REMARK   3                                                                      
REMARK   3   TLS GROUP : 3                                                      
REMARK   3    NUMBER OF COMPONENTS GROUP : 5                                    
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   A   156        A   165                          
REMARK   3    RESIDUE RANGE :   A   166        A   181                          
REMARK   3    RESIDUE RANGE :   A   107        A   123                          
REMARK   3    RESIDUE RANGE :   A   124        A   155                          
REMARK   3    RESIDUE RANGE :   A   182        A   208                          
REMARK   3    ORIGIN FOR THE GROUP (A):  32.8239  31.4872  39.5294              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.1180 T22:   0.0640                                     
REMARK   3      T33:   0.0862 T12:   0.0265                                     
REMARK   3      T13:   0.0027 T23:  -0.0375                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   4.2122 L22:   0.9446                                     
REMARK   3      L33:   1.5430 L12:  -0.2258                                     
REMARK   3      L13:   0.5467 L23:  -0.8112                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:   0.1207 S12:   0.1839 S13:  -0.2588                       
REMARK   3      S21:  -0.0805 S22:  -0.1314 S23:   0.1131                       
REMARK   3      S31:   0.0543 S32:  -0.0448 S33:   0.0108                       
REMARK   3                                                                      
REMARK   3   TLS GROUP : 4                                                      
REMARK   3    NUMBER OF COMPONENTS GROUP : 1                                    
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   A   222        A   222                          
REMARK   3    ORIGIN FOR THE GROUP (A):  21.2131  36.5557  35.1159              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.0586 T22:   0.1443                                     
REMARK   3      T33:   0.1489 T12:   0.0438                                     
REMARK   3      T13:  -0.0331 T23:   0.0093                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:  21.6706 L22:  43.0192                                     
REMARK   3      L33:  19.8341 L12:  12.8966                                     
REMARK   3      L13: -15.6355 L23:  -6.8997                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:  -0.5045 S12:   0.0311 S13:  -0.0318                       
REMARK   3      S21:   0.3527 S22:  -0.1048 S23:  -0.4507                       
REMARK   3      S31:   0.0064 S32:  -0.9041 S33:   0.6093                       
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED : BABINET MODEL WITH MASK                              
REMARK   3   PARAMETERS FOR MASK CALCULATION                                    
REMARK   3   VDW PROBE RADIUS   : 1.40                                          
REMARK   3   ION PROBE RADIUS   : 0.80                                          
REMARK   3   SHRINKAGE RADIUS   : 0.80                                          
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THE RIDING   
REMARK   3  POSITIONS. ATOM RECORD CONTAINS RESIDUAL B FACTORS ONLY.            
REMARK   4                                                                      
REMARK   4 2XB5 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 05-APR-10.                  
REMARK 100 THE DEPOSITION ID IS D_1290043560.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 01-APR-93                          
REMARK 200  TEMPERATURE           (KELVIN) : 277                                
REMARK 200  PH                             : 7.2                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : EMBL/DESY, HAMBURG                 
REMARK 200  BEAMLINE                       : X31                                
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.08                               
REMARK 200  MONOCHROMATOR                  : MIRRORS                            
REMARK 200  OPTICS                         : MIRRORS                            
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : MARRESEARCH                        
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : MOSFLM                             
REMARK 200  DATA SCALING SOFTWARE          : NULL                               
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 7120                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.450                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 64.550                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.0                               
REMARK 200  DATA REDUNDANCY                : 4.000                              
REMARK 200  R MERGE                    (I) : 0.06000                            
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) : NULL                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : NULL                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : NULL                               
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: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: OTHER                        
REMARK 200 SOFTWARE USED: NULL                                                  
REMARK 200 STARTING MODEL: NONE                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NONE                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 42.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.31                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 10MICROL PROTEIN (0.2MM TETR, 1MM        
REMARK 280  IODOTC, 5MM MGCL2), 5MICROL RESERVOIR (35% AMMONIUM SULPHATE,       
REMARK 280  TRIS-HCL PH 7.2) VAPOUR DIFFUSSION HANGING DROP, VAPOR DIFFUSION,   
REMARK 280  HANGING DROP                                                        
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       34.43000            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000       34.43000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       90.47000            
REMARK 290   SMTRY1   3  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  1.000000  0.000000  0.000000       34.43000            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000       45.23500            
REMARK 290   SMTRY1   4  0.000000  1.000000  0.000000       34.43000            
REMARK 290   SMTRY2   4 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000  1.000000      135.70500            
REMARK 290   SMTRY1   5 -1.000000  0.000000  0.000000       34.43000            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   5  0.000000  0.000000 -1.000000      135.70500            
REMARK 290   SMTRY1   6  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       34.43000            
REMARK 290   SMTRY3   6  0.000000  0.000000 -1.000000       45.23500            
REMARK 290   SMTRY1   7  0.000000  1.000000  0.000000       34.43000            
REMARK 290   SMTRY2   7  1.000000  0.000000  0.000000       34.43000            
REMARK 290   SMTRY3   7  0.000000  0.000000 -1.000000       90.47000            
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       34.43000            
REMARK 290   SMTRY2   9  0.000000  1.000000  0.000000       34.43000            
REMARK 290   SMTRY3   9  0.000000  0.000000  1.000000       90.47000            
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       34.43000            
REMARK 290   SMTRY2  11  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3  11  0.000000  0.000000  1.000000      135.70500            
REMARK 290   SMTRY1  12  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY2  12 -1.000000  0.000000  0.000000       34.43000            
REMARK 290   SMTRY3  12  0.000000  0.000000  1.000000       45.23500            
REMARK 290   SMTRY1  13 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2  13  0.000000  1.000000  0.000000       34.43000            
REMARK 290   SMTRY3  13  0.000000  0.000000 -1.000000       45.23500            
REMARK 290   SMTRY1  14  1.000000  0.000000  0.000000       34.43000            
REMARK 290   SMTRY2  14  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3  14  0.000000  0.000000 -1.000000      135.70500            
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       34.43000            
REMARK 290   SMTRY2  16 -1.000000  0.000000  0.000000       34.43000            
REMARK 290   SMTRY3  16  0.000000  0.000000 -1.000000       90.47000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: DIMERIC                           
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 6210 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 19870 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -71.4 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       68.86000            
REMARK 350   BIOMT2   2  0.000000 -1.000000  0.000000       68.86000            
REMARK 350   BIOMT3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS                                             
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC             
REMARK 500 SYMMETRY ARE IN CLOSE CONTACT.  AN ATOM LOCATED WITHIN 0.15          
REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A           
REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375             
REMARK 500 INSTEAD OF REMARK 500.  ATOMS WITH NON-BLANK ALTERNATE               
REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS.            
REMARK 500                                                                      
REMARK 500 DISTANCE CUTOFF:                                                     
REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS              
REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS                  
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI  SSYMOP   DISTANCE          
REMARK 500   O    HOH A  2001     O    HOH A  2007    11554     2.03            
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    ARG A  80   NE  -  CZ  -  NH1 ANGL. DEV. =   3.2 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    TYR A  66       66.15   -117.61                                   
REMARK 500    ASP A  95       29.01     47.80                                   
REMARK 500    ALA A 160      119.39     68.19                                   
REMARK 500    ALA A 161       85.82    -11.37                                   
REMARK 500    PRO A 162        7.25    -65.69                                   
REMARK 500    ASP A 163     -134.64     51.59                                   
REMARK 500    GLU A 164      -82.96     43.76                                   
REMARK 500    LEU A 204     -116.52     61.22                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 620                                                                      
REMARK 620 METAL COORDINATION                                                   
REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE):                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG A 223  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HIS A 100   NE2                                                    
REMARK 620 2 I7T A 222   O12  81.1                                              
REMARK 620 3 I7T A 222   O11 160.2  82.4                                        
REMARK 620 4 HOH A2016   O    79.2  83.7  88.2                                  
REMARK 620 5 HOH A2029   O    97.9 178.8  98.7  96.6                            
REMARK 620 6 HOH A2039   O    97.3  89.5  93.4 172.8  90.1                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE I7T A 222                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 223                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL A 1209                 
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 2X6O   RELATED DB: PDB                                   
REMARK 900 TET REPRESSOR CLASS D IN COMPLEX WITH 7- CHLOR-2-CYANO-ISO-          
REMARK 900 TETRACYCLINE                                                         
REMARK 900 RELATED ID: 1A6I   RELATED DB: PDB                                   
REMARK 900 TET REPRESSOR, CLASS D VARIANT                                       
REMARK 900 RELATED ID: 2X9D   RELATED DB: PDB                                   
REMARK 900 TET REPRESSOR (CLASS D) IN COMPLEX WITH ISO-7-CHLORTETRACYCLINE      
REMARK 900 RELATED ID: 1BJZ   RELATED DB: PDB                                   
REMARK 900 TETRACYCLINE CHELATED MG2+ -ION INITIATES HELIX UNWINDING FOR TET    
REMARK 900 REPRESSOR INDUCTION                                                  
REMARK 900 RELATED ID: 1QPI   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF TETRACYCLINE REPRESSOR/ OPERATOR COMPLEX        
REMARK 900 RELATED ID: 2VKE   RELATED DB: PDB                                   
REMARK 900 TET REPRESSOR CLASS D COMPLEXED WITH COBALT AND TETRACYCLINE         
REMARK 900 RELATED ID: 2TRT   RELATED DB: PDB                                   
REMARK 900 TETRACYCLINE REPRESSOR CLASS D                                       
REMARK 900 RELATED ID: 2VKV   RELATED DB: PDB                                   
REMARK 900 TETR (BD) VARIANT L17G WITH REVERSE PHENOTYPE                        
REMARK 900 RELATED ID: 1ORK   RELATED DB: PDB                                   
REMARK 900 TET REPRESSOR, CLASS D IN COMPLEX WITH 9 -(N,N-DIMETHYLGLYCYLAMIDO)- 
REMARK 900 6-DEMETHYL-6- DEOXY-TETRACYCLINE                                     
REMARK 900 RELATED ID: 1BJ0   RELATED DB: PDB                                   
REMARK 900 TETRACYCLINE CHELATED MG2+ -ION INITIATES HELIX UNWINDING FOR TET    
REMARK 900 REPRESSOR INDUCTION                                                  
REMARK 900 RELATED ID: 2TCT   RELATED DB: PDB                                   
REMARK 900 THE COMPLEX FORMED BETWEEN TET REPRESSOR AND TETRACYCLINE- MG2+      
REMARK 900 REVEALS MECHANISM OF ANTIBIOTIC RESISTANCE                           
REMARK 900 RELATED ID: 1BJY   RELATED DB: PDB                                   
REMARK 900 TETRACYCLINE CHELATED MG2+ -ION INITIATES HELIX UNWINDING FOR TET    
REMARK 900 REPRESSOR INDUCTION                                                  
DBREF  2XB5 A    2   208  UNP    P0ACT4   TETR4_ECOLX      2    208             
SEQRES   1 A  207  ALA 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    I7T  A 222      31                                                       
HET     MG  A 223       1                                                       
HET     CL  A1209       1                                                       
HETNAM     I7T 7-IODOTETRACYCLINE                                               
HETNAM      MG MAGNESIUM ION                                                    
HETNAM      CL CHLORIDE ION                                                     
FORMUL   2  I7T    C21 H21 I N2 O7                                              
FORMUL   3   MG    MG 2+                                                        
FORMUL   4   CL    CL 1-                                                        
FORMUL   5  HOH   *40(H2 O)                                                     
HELIX    1   1 ASN A    5  GLY A   21  1                                  17    
HELIX    2   2 ILE A   22  LEU A   25  5                                   4    
HELIX    3   3 THR A   26  GLY A   35  1                                  10    
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  LEU A  101  1                                   7    
HELIX    8   8 ASP A  106  LYS A  108  5                                   3    
HELIX    9   9 GLN A  109  ASN A  123  1                                  15    
HELIX   10  10 SER A  126  LEU A  155  1                                  30    
HELIX   11  11 THR A  156  ARG A  158  5                                   3    
HELIX   12  12 PRO A  167  ASP A  178  1                                  12    
HELIX   13  13 GLY A  182  THR A  202  1                                  21    
LINK         NE2 HIS A 100                MG    MG A 223     1555   1555  2.14  
LINK         O12 I7T A 222                MG    MG A 223     1555   1555  2.01  
LINK         O11 I7T A 222                MG    MG A 223     1555   1555  1.90  
LINK        MG    MG A 223                 O   HOH A2016     1555   1555  1.96  
LINK        MG    MG A 223                 O   HOH A2029     1555  10665  2.11  
LINK        MG    MG A 223                 O   HOH A2039     1555   1555  1.86  
SITE     1 AC1 14 HIS A  64  SER A  67  ASN A  82  PHE A  86                    
SITE     2 AC1 14 HIS A 100  THR A 112  GLN A 116  SER A 138                    
SITE     3 AC1 14 LEU A 174   MG A 223  HOH A2016  HOH A2029                    
SITE     4 AC1 14 HOH A2039  HOH A2040                                          
SITE     1 AC2  6 HIS A 100  GLU A 147  I7T A 222  HOH A2016                    
SITE     2 AC2  6 HOH A2029  HOH A2039                                          
SITE     1 AC3  4 ARG A   3  LEU A   4  GLN A  76  ARG A  80                    
CRYST1   68.860   68.860  180.940  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      0.014522  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.014522  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.005527        0.00000