HEADER    DNA BINDING PROTEIN                     06-JUL-98   1HUU              
TITLE     DNA-BINDING PROTEIN HU FROM BACILLUS STEAROTHERMOPHILUS               
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: PROTEIN HU;                                                
COMPND   3 CHAIN: A, B, C;                                                      
COMPND   4 SYNONYM: BSB, NS                                                     
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: GEOBACILLUS STEAROTHERMOPHILUS;                 
SOURCE   3 ORGANISM_TAXID: 1422                                                 
KEYWDS    DNA-BINDING PROTEIN, DNA SUPERCOILING, ALPHA/BETA CLASS, MINOR GROOVE 
KEYWDS   2 BINDER, DNA BINDING PROTEIN                                          
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    S.W.WHITE,I.TANAKA,K.APPELT,K.S.WILSON                                
REVDAT   4   07-FEB-24 1HUU    1       KEYWDS                                   
REVDAT   3   13-JUL-11 1HUU    1       VERSN                                    
REVDAT   2   24-FEB-09 1HUU    1       VERSN                                    
REVDAT   1   13-JAN-99 1HUU    0                                                
JRNL        AUTH   S.W.WHITE,K.APPELT,K.S.WILSON,I.TANAKA                       
JRNL        TITL   A PROTEIN STRUCTURAL MOTIF THAT BENDS DNA.                   
JRNL        REF    PROTEINS                      V.   5   281 1989              
JRNL        REFN                   ISSN 0887-3585                               
JRNL        PMID   2508086                                                      
JRNL        DOI    10.1002/PROT.340050405                                       
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.00 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : X-PLOR 3.8                                           
REMARK   3   AUTHORS     : BRUNGER                                              
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.00                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 6.00                           
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 2.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 1000000.000                    
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : 0.0010                         
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 89.0                           
REMARK   3   NUMBER OF REFLECTIONS             : 17251                          
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) : 0.193                           
REMARK   3   FREE R VALUE                     : 0.213                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 10.000                          
REMARK   3   FREE R VALUE TEST SET COUNT      : 333                             
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : 0.017                           
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 8                            
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.00                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.19                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 80.00                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 1743                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2890                       
REMARK   3   BIN FREE R VALUE                    : 0.3300                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 12.00                        
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 55                           
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.040                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 1700                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 0                                       
REMARK   3   SOLVENT ATOMS            : 271                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 27.00                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 27.00                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 0.00000                                              
REMARK   3    B22 (A**2) : 0.00000                                              
REMARK   3    B33 (A**2) : 0.00000                                              
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) : NULL                            
REMARK   3   ESD FROM SIGMAA              (A) : NULL                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : NULL                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : NULL                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : NULL                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.011                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.530                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 24.60                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 1.600                           
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : NULL                                      
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  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  : PARAM19X.PRO                                   
REMARK   3  PARAMETER FILE  2  : NULL                                           
REMARK   3  PARAMETER FILE  3  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : TOPH19X.PRO                                    
REMARK   3  TOPOLOGY FILE  2   : NULL                                           
REMARK   3  TOPOLOGY FILE  3   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS:                                           
REMARK   3  THE MOLECULE CONTAINS A DISORDERED ARM REGION THAT IS KNOWN         
REMARK   3  TO BIND DNA IN THE MINOR GROOVE FROM THE RELATED IHF                
REMARK   3  STRUCTURE.  EACH OF THE THREE MOLECULES IN THE ASYMMETRIC           
REMARK   3  UNIT IS MISSING DIFFERENT AMOUNTS OF THE ARM DUE TO THE             
REMARK   3  LACK OF ELECTRON DENSITY.  MOLECULE A IS MISSING 59 THROUGH         
REMARK   3  68, MOLECULE B 57 THROUGH 72, AND MOLECULE C 56 THROUGH             
REMARK   3  74.                                                                 
REMARK   4                                                                      
REMARK   4 1HUU COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL.                                
REMARK 100 THE DEPOSITION ID IS D_1000174037.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : JUL-83                             
REMARK 200  TEMPERATURE           (KELVIN) : 293                                
REMARK 200  PH                             : 8.0                                
REMARK 200  NUMBER OF CRYSTALS USED        : 2                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : SRS                                
REMARK 200  BEAMLINE                       : PX7.2                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.488                              
REMARK 200  MONOCHROMATOR                  : GRAPHITE(002)                      
REMARK 200  OPTICS                         : MIRRORS                            
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : FILM                               
REMARK 200  DETECTOR MANUFACTURER          : FILM                               
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : MOSFLM                             
REMARK 200  DATA SCALING SOFTWARE          : CCP4                               
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 18328                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.000                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 10.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 2.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 89.0                               
REMARK 200  DATA REDUNDANCY                : 4.000                              
REMARK 200  R MERGE                    (I) : 0.07000                            
REMARK 200  R SYM                      (I) : 0.07000                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 10.0000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.00                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.19                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 80.0                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 2.00                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.10000                            
REMARK 200  R SYM FOR SHELL            (I) : 0.10000                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 2.500                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: NULL                                           
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: SINGLE ISOMORPHOUS           
REMARK 200  REPLACEMENT PLUS ANOMALOUS (URANYL) AND NCS AVERAGING ON THREE      
REMARK 200  MOLECULES                                                           
REMARK 200 SOFTWARE USED: X-PLOR 3.8                                            
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 51.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.12                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PH 8.0                                   
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 2 1                          
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,Y,-Z                                                 
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1, 2, 3, 4, 5                                           
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 ASYMMETRIC UNIT CONSISTS OF THREE HU MONOMERS ARRANGED   
REMARK 300 AROUND THREE OF THE FOUR TWOFOLD AXES IN THE P2 SPACE                
REMARK 300 GROUP.  BIOLOGICALLY RELEVANT DIMERS ARE GENERATED BY THE            
REMARK 300 SYMMETRY OPERATIONS OF THE UNIT CELL.  THE SOLVENT                   
REMARK 300 MOLECULES ARE LABELED ACCORDING TO THE MONOMER WITH WHICH            
REMARK 300 THEY ASSOCIATE.  WATER MOLECULES 100 THROUGH 135 ARE COMMON          
REMARK 300 TO ALL THREE MOLECULES IN THE ASYMMETRIC UNIT AND CAN BE             
REMARK 300 CONSIDERED STRUCTURAL.  WATER MOLECULES 200 AND HIGHER ARE           
REMARK 300 NOT COMMON TO ALL THREE MOLECULES.                                   
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: 3560 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 9250 ANGSTROM**2                        
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -41.0 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       38.33759            
REMARK 350   BIOMT2   2  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   2  0.000000  0.000000 -1.000000       59.60246            
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 2                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC                         
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC                  
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 APPLY THE FOLLOWING TO CHAINS: B                                     
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 3                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC                         
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC                  
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 APPLY THE FOLLOWING TO CHAINS: C                                     
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 4                                                       
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PQS                                                   
REMARK 350 APPLY THE FOLLOWING TO CHAINS: B                                     
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   2 -1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   2  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   2  0.000000  0.000000 -1.000000        0.00000            
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 5                                                       
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PQS                                                   
REMARK 350 APPLY THE FOLLOWING TO CHAINS: C                                     
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      -27.16241            
REMARK 350   BIOMT2   2  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   2  0.000000  0.000000 -1.000000       59.60246            
REMARK 400                                                                      
REMARK 400 COMPOUND                                                             
REMARK 400 PROTEIN HU BINDS DNA NON-SPECIFICALLY AND INTRODUCES                 
REMARK 400 SHARP BENDS.  THE PROTEIN APPEARS TO INDUCE DNA NEGATIVE             
REMARK 400 SUPERCOILING BY PROTEIN-PROTEIN INTERACTION.  BIOLOGICAL             
REMARK 400 ROLE IS TO INDUCE DNA SUPERCOILING AND RELIEVE TORSIONAL             
REMARK 400 STRESS RESULTING FROM DNA PROCESSES SUCH AS TRANSCRIPTION            
REMARK 400 AND REPLICATION.                                                     
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     LYS A    59                                                      
REMARK 465     GLY A    60                                                      
REMARK 465     ARG A    61                                                      
REMARK 465     ASN A    62                                                      
REMARK 465     PRO A    63                                                      
REMARK 465     GLN A    64                                                      
REMARK 465     THR A    65                                                      
REMARK 465     GLY A    66                                                      
REMARK 465     GLU A    67                                                      
REMARK 465     GLU A    68                                                      
REMARK 465     ALA B    57                                                      
REMARK 465     ARG B    58                                                      
REMARK 465     LYS B    59                                                      
REMARK 465     GLY B    60                                                      
REMARK 465     ARG B    61                                                      
REMARK 465     ASN B    62                                                      
REMARK 465     PRO B    63                                                      
REMARK 465     GLN B    64                                                      
REMARK 465     THR B    65                                                      
REMARK 465     GLY B    66                                                      
REMARK 465     GLU B    67                                                      
REMARK 465     GLU B    68                                                      
REMARK 465     MET B    69                                                      
REMARK 465     GLU B    70                                                      
REMARK 465     ILE B    71                                                      
REMARK 465     PRO B    72                                                      
REMARK 465     ALA C    56                                                      
REMARK 465     ALA C    57                                                      
REMARK 465     ARG C    58                                                      
REMARK 465     LYS C    59                                                      
REMARK 465     GLY C    60                                                      
REMARK 465     ARG C    61                                                      
REMARK 465     ASN C    62                                                      
REMARK 465     PRO C    63                                                      
REMARK 465     GLN C    64                                                      
REMARK 465     THR C    65                                                      
REMARK 465     GLY C    66                                                      
REMARK 465     GLU C    67                                                      
REMARK 465     GLU C    68                                                      
REMARK 465     MET C    69                                                      
REMARK 465     GLU C    70                                                      
REMARK 465     ILE C    71                                                      
REMARK 465     PRO C    72                                                      
REMARK 465     ALA C    73                                                      
REMARK 465     SER C    74                                                      
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT                     
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT.                            
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI           DISTANCE          
REMARK 500   O    HOH C   114     O    HOH C   221              1.82            
REMARK 500   OE1  GLN B    43     O    HOH B   163              1.93            
REMARK 500   O    HOH A   120     O    HOH A   168              1.95            
REMARK 500   O    HOH C   230     O    HOH C   251              1.95            
REMARK 500   O    HOH A   131     O    HOH A   197              1.95            
REMARK 500   O    HOH A   114     O    HOH A   157              1.96            
REMARK 500   OD1  ASN B     8     O    HOH B   104              1.99            
REMARK 500   O    HOH C   212     O    HOH C   218              1.99            
REMARK 500   O    HOH B   103     O    HOH B   136              2.00            
REMARK 500   O    HOH C   207     O    HOH C   208              2.04            
REMARK 500   O    HOH B   115     O    HOH B   152              2.05            
REMARK 500   NH2  ARG A    37     O    HOH A   165              2.05            
REMARK 500   OE1  GLU A    34     O    HOH A   161              2.16            
REMARK 500   O    HOH C   111     O    HOH C   220              2.19            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
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 C   129     O    HOH C   247     2556     1.89            
REMARK 500   O    HOH B   141     O    HOH C   200     1554     1.94            
REMARK 500   O    HOH C   215     O    HOH C   215     2556     1.99            
REMARK 500   O    HOH C   231     O    HOH C   232     2556     2.02            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS                                      
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3)               
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   RES CSSEQI ATM2   DEVIATION                     
REMARK 500    LYS A  83   CA    LYS A  83   CB      0.323                       
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 C  55   N   -  CA  -  C   ANGL. DEV. = -17.0 DEGREES          
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    MET A  69       32.28     33.72                                   
REMARK 500    PHE B  47      -60.88   -127.12                                   
REMARK 500    ALA B  56       76.47    -46.84                                   
REMARK 500    ALA B  73      -49.21    143.85                                   
REMARK 500    ARG C  55      -29.28    142.09                                   
REMARK 500    LYS C  75       71.26     87.35                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
DBREF  1HUU A    1    90  UNP    P02346   DBH_BACST        1     90             
DBREF  1HUU B    1    90  UNP    P02346   DBH_BACST        1     90             
DBREF  1HUU C    1    90  UNP    P02346   DBH_BACST        1     90             
SEQRES   1 A   90  MET ASN LYS THR GLU LEU ILE ASN ALA VAL ALA GLU THR          
SEQRES   2 A   90  SER GLY LEU SER LYS LYS ASP ALA THR LYS ALA VAL ASP          
SEQRES   3 A   90  ALA VAL PHE ASP SER ILE THR GLU ALA LEU ARG LYS GLY          
SEQRES   4 A   90  ASP LYS VAL GLN LEU ILE GLY PHE GLY ASN PHE GLU VAL          
SEQRES   5 A   90  ARG GLU ARG ALA ALA ARG LYS GLY ARG ASN PRO GLN THR          
SEQRES   6 A   90  GLY GLU GLU MET GLU ILE PRO ALA SER LYS VAL PRO ALA          
SEQRES   7 A   90  PHE LYS PRO GLY LYS ALA LEU LYS ASP ALA VAL LYS              
SEQRES   1 B   90  MET ASN LYS THR GLU LEU ILE ASN ALA VAL ALA GLU THR          
SEQRES   2 B   90  SER GLY LEU SER LYS LYS ASP ALA THR LYS ALA VAL ASP          
SEQRES   3 B   90  ALA VAL PHE ASP SER ILE THR GLU ALA LEU ARG LYS GLY          
SEQRES   4 B   90  ASP LYS VAL GLN LEU ILE GLY PHE GLY ASN PHE GLU VAL          
SEQRES   5 B   90  ARG GLU ARG ALA ALA ARG LYS GLY ARG ASN PRO GLN THR          
SEQRES   6 B   90  GLY GLU GLU MET GLU ILE PRO ALA SER LYS VAL PRO ALA          
SEQRES   7 B   90  PHE LYS PRO GLY LYS ALA LEU LYS ASP ALA VAL LYS              
SEQRES   1 C   90  MET ASN LYS THR GLU LEU ILE ASN ALA VAL ALA GLU THR          
SEQRES   2 C   90  SER GLY LEU SER LYS LYS ASP ALA THR LYS ALA VAL ASP          
SEQRES   3 C   90  ALA VAL PHE ASP SER ILE THR GLU ALA LEU ARG LYS GLY          
SEQRES   4 C   90  ASP LYS VAL GLN LEU ILE GLY PHE GLY ASN PHE GLU VAL          
SEQRES   5 C   90  ARG GLU ARG ALA ALA ARG LYS GLY ARG ASN PRO GLN THR          
SEQRES   6 C   90  GLY GLU GLU MET GLU ILE PRO ALA SER LYS VAL PRO ALA          
SEQRES   7 C   90  PHE LYS PRO GLY LYS ALA LEU LYS ASP ALA VAL LYS              
FORMUL   4  HOH   *271(H2 O)                                                    
HELIX    1   1 LYS A    3  SER A   14  1                                  12    
HELIX    2   2 LYS A   18  ARG A   37  1                                  20    
HELIX    3   3 LYS A   83  ALA A   88  1                                   6    
HELIX    4   4 LYS B    3  SER B   14  1                                  12    
HELIX    5   5 LYS B   18  ARG B   37  1                                  20    
HELIX    6   6 LYS B   83  ALA B   88  1                                   6    
HELIX    7   7 LYS C    3  SER C   14  1                                  12    
HELIX    8   8 LYS C   18  ARG C   37  1                                  20    
HELIX    9   9 LYS C   83  ALA C   88  1                                   6    
SHEET    1   A 3 VAL A  42  LEU A  44  0                                        
SHEET    2   A 3 GLY A  48  ARG A  55 -1  N  PHE A  50   O  VAL A  42           
SHEET    3   A 3 SER A  74  PRO A  81 -1  N  LYS A  80   O  ASN A  49           
SHEET    1   B 3 VAL B  42  LEU B  44  0                                        
SHEET    2   B 3 GLY B  48  ARG B  55 -1  N  PHE B  50   O  VAL B  42           
SHEET    3   B 3 SER B  74  PRO B  81 -1  N  LYS B  80   O  ASN B  49           
SHEET    1   C 3 VAL C  42  LEU C  44  0                                        
SHEET    2   C 3 GLY C  48  ARG C  53 -1  N  PHE C  50   O  VAL C  42           
SHEET    3   C 3 VAL C  76  PRO C  81 -1  N  LYS C  80   O  ASN C  49           
CRYST1   65.500   37.300   65.500  90.00 114.50  90.00 P 1 2 1       6          
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      0.015267  0.000000  0.006958        0.00000                         
SCALE2      0.000000  0.026810  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.016778        0.00000                         
MTRIX1   1  0.116000 -0.000600  0.993300       19.18220    1                    
MTRIX2   1  0.002300  1.000000  0.000300       12.43290    1                    
MTRIX3   1 -0.993300  0.002200  0.116000       29.76000    1                    
MTRIX1   2  0.940200 -0.001600 -0.340600       42.08190    1                    
MTRIX2   2  0.000800  1.000000 -0.002400       12.14780    1                    
MTRIX3   2  0.340600  0.001900  0.940200        6.39870    1                    
MTRIX1   3 -0.229300  0.000100 -0.973400       25.85910    1                    
MTRIX2   3  0.001000  1.000000 -0.000100       -0.35010    1                    
MTRIX3   3  0.973400 -0.001000 -0.229300       20.03520    1