HEADER    TRANSCRIPTION REGULATOR                 11-DEC-06   2O7O              
TITLE     CRYSTAL STRUCTURE ANALYSIS OF TETR(D) COMPLEX WITH DOXYCYCLINE        
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: TETRACYCLINE REPRESSOR PROTEIN CLASS D;                    
COMPND   3 CHAIN: A;                                                            
COMPND   4 FRAGMENT: RESIDUES 2-208;                                            
COMPND   5 ENGINEERED: YES;                                                     
COMPND   6 MUTATION: 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: 562;                                        
SOURCE   6 EXPRESSION_SYSTEM_STRAIN: K12 DELTA H1 DELTA TRP;                    
SOURCE   7 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE   8 EXPRESSION_SYSTEM_PLASMID: PWH 610                                   
KEYWDS    HELIX-TURN-HELIX, METAL COORDINATION, TRANSCRIPTION REGULATOR         
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    A.ALEKSANDROV,J.PROFT,W.HINRICHS                                      
REVDAT   6   25-OCT-23 2O7O    1       REMARK                                   
REVDAT   5   10-NOV-21 2O7O    1       REMARK SEQADV HETSYN LINK                
REVDAT   4   18-OCT-17 2O7O    1       REMARK                                   
REVDAT   3   13-JUL-11 2O7O    1       VERSN                                    
REVDAT   2   24-FEB-09 2O7O    1       VERSN                                    
REVDAT   1   15-MAY-07 2O7O    0                                                
JRNL        AUTH   A.ALEKSANDROV,J.PROFT,W.HINRICHS,T.SIMONSON                  
JRNL        TITL   PROTONATION PATTERNS IN TETRACYCLINE:TET REPRESSOR           
JRNL        TITL 2 RECOGNITION: SIMULATIONS AND EXPERIMENTS                     
JRNL        REF    CHEMBIOCHEM                   V.   8   675 2007              
JRNL        REFN                   ISSN 1439-4227                               
JRNL        PMID   17361981                                                     
JRNL        DOI    10.1002/CBIC.200600535                                       
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.89 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.2.0019                                      
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) : 1.89                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 19.34                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 99.8                           
REMARK   3   NUMBER OF REFLECTIONS             : 15374                          
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) : 0.204                           
REMARK   3   R VALUE            (WORKING SET) : 0.202                           
REMARK   3   FREE R VALUE                     : 0.243                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 817                             
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 20                           
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 1.89                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.94                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 1099                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 99.41                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2560                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 77                           
REMARK   3   BIN FREE R VALUE                    : 0.3490                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 1641                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 40                                      
REMARK   3   SOLVENT ATOMS            : 102                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 29.90                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 29.97                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 1.64000                                              
REMARK   3    B22 (A**2) : 1.64000                                              
REMARK   3    B33 (A**2) : -3.29000                                             
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): 0.183         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.161         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.129         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 4.395         
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.961                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.946                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  1731 ; 0.023 ; 0.021       
REMARK   3   BOND LENGTHS OTHERS               (A):  1168 ; 0.002 ; 0.020       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  2357 ; 1.974 ; 1.996       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  2832 ; 1.139 ; 3.000       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   210 ; 5.560 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):    85 ;35.103 ;23.529       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   297 ;18.521 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):    17 ;16.106 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   266 ; 0.170 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  1934 ; 0.009 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):   355 ; 0.001 ; 0.020       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):   481 ; 0.244 ; 0.200       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  1285 ; 0.207 ; 0.200       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):   914 ; 0.197 ; 0.200       
REMARK   3   NON-BONDED TORSION OTHERS         (A):   937 ; 0.102 ; 0.200       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):    97 ; 0.180 ; 0.200       
REMARK   3   H-BOND (X...Y) OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION REFINED ATOMS (A):     1 ; 0.122 ; 0.200       
REMARK   3   POTENTIAL METAL-ION OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW REFINED ATOMS        (A):    29 ; 0.271 ; 0.200       
REMARK   3   SYMMETRY VDW OTHERS               (A):    93 ; 0.264 ; 0.200       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):    21 ; 0.200 ; 0.200       
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):  1323 ; 1.615 ; 1.500       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):   422 ; 0.343 ; 1.500       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  1669 ; 1.902 ; 2.000       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):   772 ; 3.097 ; 3.000       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):   688 ; 4.233 ; 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  : NULL                                       
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                                                           
REMARK   4                                                                      
REMARK   4 2O7O COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 20-DEC-06.                  
REMARK 100 THE DEPOSITION ID IS D_1000040790.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 01-APR-04                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
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                       : X13                                
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.8011                             
REMARK 200  MONOCHROMATOR                  : MIRRORS                            
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : MAR CCD 165 MM                     
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : HKL-2000                           
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 16248                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.890                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 19.340                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 100.0                              
REMARK 200  DATA REDUNDANCY                : 15.80                              
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : 0.07100                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 29.6000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.89                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.93                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 100.0                              
REMARK 200  DATA REDUNDANCY IN SHELL       : 10.30                              
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : 0.36000                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 7.300                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: NULL                                                  
REMARK 200 STARTING MODEL: 2TCT                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 41.06                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.09                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 1.1M AMMONIUM SULPHATE, PH 7.2, VAPOR    
REMARK 280  DIFFUSION, HANGING DROP, TEMPERATURE 293K                           
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       32.91500            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000       32.91500            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       89.75100            
REMARK 290   SMTRY1   3  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  1.000000  0.000000  0.000000       32.91500            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000       44.87550            
REMARK 290   SMTRY1   4  0.000000  1.000000  0.000000       32.91500            
REMARK 290   SMTRY2   4 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000  1.000000      134.62650            
REMARK 290   SMTRY1   5 -1.000000  0.000000  0.000000       32.91500            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   5  0.000000  0.000000 -1.000000      134.62650            
REMARK 290   SMTRY1   6  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       32.91500            
REMARK 290   SMTRY3   6  0.000000  0.000000 -1.000000       44.87550            
REMARK 290   SMTRY1   7  0.000000  1.000000  0.000000       32.91500            
REMARK 290   SMTRY2   7  1.000000  0.000000  0.000000       32.91500            
REMARK 290   SMTRY3   7  0.000000  0.000000 -1.000000       89.75100            
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       32.91500            
REMARK 290   SMTRY2   9  0.000000  1.000000  0.000000       32.91500            
REMARK 290   SMTRY3   9  0.000000  0.000000  1.000000       89.75100            
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       32.91500            
REMARK 290   SMTRY2  11  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3  11  0.000000  0.000000  1.000000      134.62650            
REMARK 290   SMTRY1  12  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY2  12 -1.000000  0.000000  0.000000       32.91500            
REMARK 290   SMTRY3  12  0.000000  0.000000  1.000000       44.87550            
REMARK 290   SMTRY1  13 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2  13  0.000000  1.000000  0.000000       32.91500            
REMARK 290   SMTRY3  13  0.000000  0.000000 -1.000000       44.87550            
REMARK 290   SMTRY1  14  1.000000  0.000000  0.000000       32.91500            
REMARK 290   SMTRY2  14  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3  14  0.000000  0.000000 -1.000000      134.62650            
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       32.91500            
REMARK 290   SMTRY2  16 -1.000000  0.000000  0.000000       32.91500            
REMARK 290   SMTRY3  16  0.000000  0.000000 -1.000000       89.75100            
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 SECOND PART OF THE BIOLOGICAL HOMODIMER IS GENERATED     
REMARK 300 BY THE TWO FOLD AXIS:  -X+1, -Y+1,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,PQS                                              
REMARK 350 TOTAL BURIED SURFACE AREA: 8520 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 18770 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -80.0 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       65.83000            
REMARK 350   BIOMT2   2  0.000000 -1.000000  0.000000       65.83000            
REMARK 350   BIOMT3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT                     
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT.                            
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI           DISTANCE          
REMARK 500   O    ALA A    50     O    HOH A   356              2.16            
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   6   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.0 DEGREES          
REMARK 500    ARG A  62   NE  -  CZ  -  NH2 ANGL. DEV. =  -4.1 DEGREES          
REMARK 500    ARG A  88   NE  -  CZ  -  NH1 ANGL. DEV. =   3.2 DEGREES          
REMARK 500    ARG A  92   NE  -  CZ  -  NH1 ANGL. DEV. =   3.2 DEGREES          
REMARK 500    ARG A 171   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.5 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    ASP A 157      -70.94    -68.59                                   
REMARK 500    LEU A 204     -114.82     46.19                                   
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 DXT A 222   O12  98.1                                              
REMARK 620 3 DXT A 222   O11 175.1  77.1                                        
REMARK 620 4 HOH A 224   O    93.4 168.0  91.5                                  
REMARK 620 5 HOH A 225   O    93.1  92.3  88.0  83.6                            
REMARK 620 6 HOH A 226   O    94.6  93.4  84.9  89.1 169.7                      
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 MG A 223                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 301                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL A 302                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL A 303                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE DXT A 222                 
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 2TCT   RELATED DB: PDB                                   
REMARK 900 THE SAME PROTEIN IN COMPLEX WITH 7-CHLORTETRACYCLINE                 
DBREF  2O7O A    2   208  UNP    P0ACT4   TETR4_ECOLI      1    207             
SEQADV 2O7O SER A    2  UNP  P0ACT4    ALA     1 ENGINEERED 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     MG  A 223       1                                                       
HET    SO4  A 301       5                                                       
HET     CL  A 302       1                                                       
HET     CL  A 303       1                                                       
HET    DXT  A 222      32                                                       
HETNAM      MG MAGNESIUM ION                                                    
HETNAM     SO4 SULFATE ION                                                      
HETNAM      CL CHLORIDE ION                                                     
HETNAM     DXT (4S,4AR,5S,5AR,6R,12AS)-4-(DIMETHYLAMINO)-3,5,10,12,             
HETNAM   2 DXT  12A-PENTAHYDROXY-6-METHYL-1,11-DIOXO-1,4,4A,5,5A,6,11,          
HETNAM   3 DXT  12A-OCTAHYDROTETRACENE-2-CARBOXAMIDE                            
HETSYN     DXT DOXYTETRACYCLINE; DOXYCYCLINE                                    
FORMUL   2   MG    MG 2+                                                        
FORMUL   3  SO4    O4 S 2-                                                      
FORMUL   4   CL    2(CL 1-)                                                     
FORMUL   6  DXT    C22 H24 N2 O8                                                
FORMUL   7  HOH   *102(H2 O)                                                    
HELIX    1   1 ASN A    5  LEU A   25  1                                  21    
HELIX    2   2 THR A   26  GLY A   35  1                                  10    
HELIX    3   3 GLU A   37  VAL A   45  1                                   9    
HELIX    4   4 ASN A   47  HIS A   64  1                                  18    
HELIX    5   5 SER A   74  ARG A   92  1                                  19    
HELIX    6   6 ASP A   95  LEU A  101  1                                   7    
HELIX    7   7 ASP A  106  LYS A  108  5                                   3    
HELIX    8   8 GLN A  109  ASN A  123  1                                  15    
HELIX    9   9 SER A  126  ARG A  158  1                                  33    
HELIX   10  10 PRO A  162  LEU A  166  5                                   5    
HELIX   11  11 PRO A  167  ASP A  178  1                                  12    
HELIX   12  12 GLY A  182  LEU A  204  1                                  23    
LINK         NE2 HIS A 100                MG    MG A 223     1555   1555  2.13  
LINK         O12 DXT A 222                MG    MG A 223     1555   1555  1.87  
LINK         O11 DXT A 222                MG    MG A 223     1555   1555  2.15  
LINK        MG    MG A 223                 O   HOH A 224     1555   1555  2.18  
LINK        MG    MG A 223                 O   HOH A 225     1555   1555  2.12  
LINK        MG    MG A 223                 O   HOH A 226     1555   1555  2.06  
SITE     1 AC1  5 HIS A 100  DXT A 222  HOH A 224  HOH A 225                    
SITE     2 AC1  5 HOH A 226                                                     
SITE     1 AC2  4 ARG A  62  HIS A  63  ARG A  92  TYR A  93                    
SITE     1 AC3  4 LEU A   4  GLN A  76  ARG A  80  HOH A 394                    
SITE     1 AC4  4 SER A   2  ARG A   3  SER A  74  SER A  77                    
SITE     1 AC5 18 HIS A  64  SER A  67  ASN A  82  PHE A  86                    
SITE     2 AC5 18 HIS A 100  ARG A 104  PRO A 105  VAL A 113                    
SITE     3 AC5 18 GLN A 116  ILE A 134  SER A 138  LEU A 174                    
SITE     4 AC5 18 MET A 177   MG A 223  HOH A 225  HOH A 226                    
SITE     5 AC5 18 HOH A 321  HOH A 343                                          
CRYST1   65.830   65.830  179.502  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      0.015191  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.015191  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.005571        0.00000