HEADER    TRANSFERASE                             31-OCT-01   1KA8              
TITLE     CRYSTAL STRUCTURE OF THE PHAGE P4 ORIGIN-BINDING DOMAIN               
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: PUTATIVE P4-SPECIFIC DNA PRIMASE;                          
COMPND   3 CHAIN: A, B, C, D, E, F;                                             
COMPND   4 FRAGMENT: ORIGIN-BINDING DOMAIN;                                     
COMPND   5 EC: 2.7.7.-;                                                         
COMPND   6 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: ENTEROBACTERIA PHAGE P4;                        
SOURCE   3 ORGANISM_TAXID: 10680;                                               
SOURCE   4 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   5 EXPRESSION_SYSTEM_TAXID: 562                                         
KEYWDS    WINGED HELIX, TRANSFERASE                                             
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    H.J.YEO,G.ZIEGELIN,S.KOROLEV,R.CALENDAR,E.LANKA,G.WAKSMAN             
REVDAT   3   07-FEB-24 1KA8    1       REMARK                                   
REVDAT   2   24-FEB-09 1KA8    1       VERSN                                    
REVDAT   1   17-APR-02 1KA8    0                                                
JRNL        AUTH   H.J.YEO,G.ZIEGELIN,S.KOROLEV,R.CALENDAR,E.LANKA,G.WAKSMAN    
JRNL        TITL   PHAGE P4 ORIGIN-BINDING DOMAIN STRUCTURE REVEALS A MECHANISM 
JRNL        TITL 2 FOR REGULATION OF DNA-BINDING ACTIVITY BY HOMO- AND          
JRNL        TITL 3 HETERODIMERIZATION OF WINGED HELIX PROTEINS.                 
JRNL        REF    MOL.MICROBIOL.                V.  43   855 2002              
JRNL        REFN                   ISSN 0950-382X                               
JRNL        PMID   11929537                                                     
JRNL        DOI    10.1046/J.1365-2958.2002.02796.X                             
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.95 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS 1.0                                              
REMARK   3   AUTHORS     : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE-              
REMARK   3               : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU,              
REMARK   3               : READ,RICE,SIMONSON,WARREN                            
REMARK   3                                                                      
REMARK   3  REFINEMENT TARGET : ENGH & HUBER                                    
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.95                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 28.35                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 2.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 1666006.400                    
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : 0.0000                         
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 92.8                           
REMARK   3   NUMBER OF REFLECTIONS             : 18665                          
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) : 0.241                           
REMARK   3   FREE R VALUE                     : 0.284                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 927                             
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : 0.009                           
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 6                            
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.95                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 3.13                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 79.70                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 2473                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.3050                       
REMARK   3   BIN FREE R VALUE                    : 0.3600                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 5.00                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 130                          
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.032                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 4874                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 0                                       
REMARK   3   SOLVENT ATOMS            : 12                                      
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 45.80                          
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) : 0.40                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.47                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : 5.00                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : 0.51                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.63                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.013                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.600                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 22.60                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 1.150                           
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : RESTRAINED                                
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : 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  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : FLAT MODEL                                           
REMARK   3   KSOL        : 0.38                                                 
REMARK   3   BSOL        : 48.20                                                
REMARK   3                                                                      
REMARK   3  NCS MODEL : CONSTR                                                  
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS.                         RMS   SIGMA/WEIGHT          
REMARK   3   GROUP  1  POSITIONAL            (A) : NULL  ; NULL                 
REMARK   3   GROUP  1  B-FACTOR           (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  PARAMETER FILE  1  : PROTEIN_REP.PARAM                              
REMARK   3  PARAMETER FILE  2  : WATER_REP.PARAM                                
REMARK   3  PARAMETER FILE  3  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : PROTEIN.TOP                                    
REMARK   3  TOPOLOGY FILE  2   : WATER.TOP                                      
REMARK   3  TOPOLOGY FILE  3   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1KA8 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 08-NOV-01.                  
REMARK 100 THE DEPOSITION ID IS D_1000014754.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 16-FEB-00                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 4.8                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : APS                                
REMARK 200  BEAMLINE                       : 19-ID                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.9794, 0.9795, 0.9537             
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : NULL                               
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : NULL                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : NULL                               
REMARK 200  RESOLUTION RANGE LOW       (A) : NULL                               
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : NULL                               
REMARK 200  DATA REDUNDANCY                : NULL                               
REMARK 200  R MERGE                    (I) : NULL                               
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) : 2.95                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 3.06                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 99.9                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : 0.25900                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: MAD                                            
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MAD                          
REMARK 200 SOFTWARE USED: SOLVE                                                 
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 62.44                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.27                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: AMMONIUM SULFATE, SODIUM CITRATE, PH     
REMARK 280  4.8, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 293K                
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 31 2 1                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -Y,X-Y,Z+1/3                                            
REMARK 290       3555   -X+Y,-X,Z+2/3                                           
REMARK 290       4555   Y,X,-Z                                                  
REMARK 290       5555   X-Y,-Y,-Z+2/3                                           
REMARK 290       6555   -X,-X+Y,-Z+1/3                                          
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       77.54300            
REMARK 290   SMTRY1   3 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   3 -0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000      155.08600            
REMARK 290   SMTRY1   4 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   4  0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   5  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   5  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   5  0.000000  0.000000 -1.000000      155.08600            
REMARK 290   SMTRY1   6 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   6 -0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   6  0.000000  0.000000 -1.000000       77.54300            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1, 2, 3                                                 
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: 1230 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 10550 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -13.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, 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: 2                                                       
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: 1300 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 10560 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -11.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: C, D                                  
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 3                                                       
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: 1310 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 10370 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -14.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: E, F                                  
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 470                                                                      
REMARK 470 MISSING ATOM                                                         
REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER;           
REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER;          
REMARK 470 I=INSERTION CODE):                                                   
REMARK 470   M RES CSSEQI  ATOMS                                                
REMARK 470     LYS A  80    CG   CD   CE   NZ                                   
REMARK 470     ASP B   1    CG   OD1  OD2                                       
REMARK 470     LYS B  80    CD   CE   NZ                                        
REMARK 470     GLN B  81    CG   CD   OE1  NE2                                  
REMARK 470     LYS C  76    CG   CD   CE   NZ                                   
REMARK 470     HIS C  78    CG   ND1  CD2  CE1  NE2                             
REMARK 470     HIS D  78    CG   ND1  CD2  CE1  NE2                             
REMARK 470     LYS D  80    CG   CD   CE   NZ                                   
REMARK 470     GLN D  81    CG   CD   OE1  NE2                                  
REMARK 470     LYS F 100    CG   CD   CE   NZ                                   
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   OD2  ASP E     3     OD2  ASP F     3              2.10            
REMARK 500   O    PHE F     6     OH   TYR F    70              2.17            
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    PRO B  30   C   -  N   -  CA  ANGL. DEV. =  -9.4 DEGREES          
REMARK 500    PRO B  30   C   -  N   -  CD  ANGL. DEV. =  13.0 DEGREES          
REMARK 500    PRO E   4   C   -  N   -  CA  ANGL. DEV. =   9.2 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    ASP A   3       66.36     66.26                                   
REMARK 500    THR A  18       72.88    -64.41                                   
REMARK 500    SER A  19       18.14   -140.42                                   
REMARK 500    ILE A  28      101.20    -51.39                                   
REMARK 500    ILE A  29      -97.69    -64.72                                   
REMARK 500    PRO A  30      103.18    -34.57                                   
REMARK 500    THR B  18       65.77    -62.68                                   
REMARK 500    ILE B  28      109.62    -52.76                                   
REMARK 500    ILE B  29     -104.63    -69.55                                   
REMARK 500    PRO B  30      108.97    -36.21                                   
REMARK 500    THR C  18       75.08    -63.58                                   
REMARK 500    ILE C  29     -106.84    -64.19                                   
REMARK 500    PRO C  30      109.72    -36.79                                   
REMARK 500    LEU C  63      -71.37    -31.69                                   
REMARK 500    GLN C  81       53.70   -104.25                                   
REMARK 500    TRP C  97      -23.81   -140.41                                   
REMARK 500    THR D  18       71.72    -63.22                                   
REMARK 500    ILE D  28      106.81    -49.11                                   
REMARK 500    ILE D  29      -97.50    -72.10                                   
REMARK 500    PRO D  30      103.58    -32.76                                   
REMARK 500    ASP E   3       68.20     20.68                                   
REMARK 500    THR E  18       70.89    -62.82                                   
REMARK 500    ILE E  29     -100.52    -73.66                                   
REMARK 500    PRO E  30      104.87    -36.69                                   
REMARK 500    LEU E  63      -70.24    -33.02                                   
REMARK 500    ARG E  77      119.98   -170.62                                   
REMARK 500    THR F  18       71.90    -57.09                                   
REMARK 500    ILE F  29      -94.82    -72.76                                   
REMARK 500    PRO F  30      103.73    -34.27                                   
REMARK 500    ARG F  77      130.21   -173.81                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
DBREF  1KA8 A    1   100  UNP    P10277   PRIM_BPP4      671    770             
DBREF  1KA8 B    1   100  UNP    P10277   PRIM_BPP4      671    770             
DBREF  1KA8 C    1   100  UNP    P10277   PRIM_BPP4      671    770             
DBREF  1KA8 D    1   100  UNP    P10277   PRIM_BPP4      671    770             
DBREF  1KA8 E    1   100  UNP    P10277   PRIM_BPP4      671    770             
DBREF  1KA8 F    1   100  UNP    P10277   PRIM_BPP4      671    770             
SEQRES   1 A  100  ASP ALA ASP PRO THR PHE ASP PHE ILE GLY TYR LEU GLU          
SEQRES   2 A  100  THR LEU PRO GLN THR SER GLY MET TYR MET GLY ASN ALA          
SEQRES   3 A  100  SER ILE ILE PRO ARG ASN TYR ARG LYS TYR LEU TYR HIS          
SEQRES   4 A  100  ALA TYR LEU ALA TYR MET GLU ALA ASN GLY TYR ARG ASN          
SEQRES   5 A  100  VAL LEU SER LEU LYS MET PHE GLY LEU GLY LEU PRO VAL          
SEQRES   6 A  100  MET LEU LYS GLU TYR GLY LEU ASN TYR GLU LYS ARG HIS          
SEQRES   7 A  100  THR LYS GLN GLY ILE GLN THR ASN LEU THR LEU LYS GLU          
SEQRES   8 A  100  GLU SER TYR GLY ASP TRP LEU PRO LYS                          
SEQRES   1 B  100  ASP ALA ASP PRO THR PHE ASP PHE ILE GLY TYR LEU GLU          
SEQRES   2 B  100  THR LEU PRO GLN THR SER GLY MET TYR MET GLY ASN ALA          
SEQRES   3 B  100  SER ILE ILE PRO ARG ASN TYR ARG LYS TYR LEU TYR HIS          
SEQRES   4 B  100  ALA TYR LEU ALA TYR MET GLU ALA ASN GLY TYR ARG ASN          
SEQRES   5 B  100  VAL LEU SER LEU LYS MET PHE GLY LEU GLY LEU PRO VAL          
SEQRES   6 B  100  MET LEU LYS GLU TYR GLY LEU ASN TYR GLU LYS ARG HIS          
SEQRES   7 B  100  THR LYS GLN GLY ILE GLN THR ASN LEU THR LEU LYS GLU          
SEQRES   8 B  100  GLU SER TYR GLY ASP TRP LEU PRO LYS                          
SEQRES   1 C  100  ASP ALA ASP PRO THR PHE ASP PHE ILE GLY TYR LEU GLU          
SEQRES   2 C  100  THR LEU PRO GLN THR SER GLY MET TYR MET GLY ASN ALA          
SEQRES   3 C  100  SER ILE ILE PRO ARG ASN TYR ARG LYS TYR LEU TYR HIS          
SEQRES   4 C  100  ALA TYR LEU ALA TYR MET GLU ALA ASN GLY TYR ARG ASN          
SEQRES   5 C  100  VAL LEU SER LEU LYS MET PHE GLY LEU GLY LEU PRO VAL          
SEQRES   6 C  100  MET LEU LYS GLU TYR GLY LEU ASN TYR GLU LYS ARG HIS          
SEQRES   7 C  100  THR LYS GLN GLY ILE GLN THR ASN LEU THR LEU LYS GLU          
SEQRES   8 C  100  GLU SER TYR GLY ASP TRP LEU PRO LYS                          
SEQRES   1 D  100  ASP ALA ASP PRO THR PHE ASP PHE ILE GLY TYR LEU GLU          
SEQRES   2 D  100  THR LEU PRO GLN THR SER GLY MET TYR MET GLY ASN ALA          
SEQRES   3 D  100  SER ILE ILE PRO ARG ASN TYR ARG LYS TYR LEU TYR HIS          
SEQRES   4 D  100  ALA TYR LEU ALA TYR MET GLU ALA ASN GLY TYR ARG ASN          
SEQRES   5 D  100  VAL LEU SER LEU LYS MET PHE GLY LEU GLY LEU PRO VAL          
SEQRES   6 D  100  MET LEU LYS GLU TYR GLY LEU ASN TYR GLU LYS ARG HIS          
SEQRES   7 D  100  THR LYS GLN GLY ILE GLN THR ASN LEU THR LEU LYS GLU          
SEQRES   8 D  100  GLU SER TYR GLY ASP TRP LEU PRO LYS                          
SEQRES   1 E  100  ASP ALA ASP PRO THR PHE ASP PHE ILE GLY TYR LEU GLU          
SEQRES   2 E  100  THR LEU PRO GLN THR SER GLY MET TYR MET GLY ASN ALA          
SEQRES   3 E  100  SER ILE ILE PRO ARG ASN TYR ARG LYS TYR LEU TYR HIS          
SEQRES   4 E  100  ALA TYR LEU ALA TYR MET GLU ALA ASN GLY TYR ARG ASN          
SEQRES   5 E  100  VAL LEU SER LEU LYS MET PHE GLY LEU GLY LEU PRO VAL          
SEQRES   6 E  100  MET LEU LYS GLU TYR GLY LEU ASN TYR GLU LYS ARG HIS          
SEQRES   7 E  100  THR LYS GLN GLY ILE GLN THR ASN LEU THR LEU LYS GLU          
SEQRES   8 E  100  GLU SER TYR GLY ASP TRP LEU PRO LYS                          
SEQRES   1 F  100  ASP ALA ASP PRO THR PHE ASP PHE ILE GLY TYR LEU GLU          
SEQRES   2 F  100  THR LEU PRO GLN THR SER GLY MET TYR MET GLY ASN ALA          
SEQRES   3 F  100  SER ILE ILE PRO ARG ASN TYR ARG LYS TYR LEU TYR HIS          
SEQRES   4 F  100  ALA TYR LEU ALA TYR MET GLU ALA ASN GLY TYR ARG ASN          
SEQRES   5 F  100  VAL LEU SER LEU LYS MET PHE GLY LEU GLY LEU PRO VAL          
SEQRES   6 F  100  MET LEU LYS GLU TYR GLY LEU ASN TYR GLU LYS ARG HIS          
SEQRES   7 F  100  THR LYS GLN GLY ILE GLN THR ASN LEU THR LEU LYS GLU          
SEQRES   8 F  100  GLU SER TYR GLY ASP TRP LEU PRO LYS                          
FORMUL   7  HOH   *12(H2 O)                                                     
HELIX    1   1 ASP A    3  ILE A    9  1                                   7    
HELIX    2   2 TYR A   36  ASN A   48  1                                  13    
HELIX    3   3 SER A   55  TYR A   70  1                                  16    
HELIX    4   4 GLU A   91  TRP A   97  1                                   7    
HELIX    5   5 ASP B    3  GLY B   10  1                                   8    
HELIX    6   6 TYR B   36  ASN B   48  1                                  13    
HELIX    7   7 SER B   55  TYR B   70  1                                  16    
HELIX    8   8 GLU B   91  TRP B   97  1                                   7    
HELIX    9   9 ASP C    3  ILE C    9  1                                   7    
HELIX   10  10 TYR C   36  ASN C   48  1                                  13    
HELIX   11  11 SER C   55  TYR C   70  1                                  16    
HELIX   12  12 LYS C   90  TRP C   97  1                                   8    
HELIX   13  13 ASP D    3  ILE D    9  1                                   7    
HELIX   14  14 TYR D   36  ASN D   48  1                                  13    
HELIX   15  15 SER D   55  TYR D   70  1                                  16    
HELIX   16  16 LYS D   90  TRP D   97  1                                   8    
HELIX   17  17 ASP E    3  ILE E    9  1                                   7    
HELIX   18  18 TYR E   36  ASN E   48  1                                  13    
HELIX   19  19 SER E   55  TYR E   70  1                                  16    
HELIX   20  20 LYS E   90  TRP E   97  1                                   8    
HELIX   21  21 ASP F    3  ILE F    9  1                                   7    
HELIX   22  22 TYR F   36  ASN F   48  1                                  13    
HELIX   23  23 SER F   55  TYR F   70  1                                  16    
HELIX   24  24 LYS F   90  TRP F   97  1                                   8    
SHEET    1   A 2 LEU A  12  THR A  14  0                                        
SHEET    2   A 2 LEU A  87  LEU A  89 -1  O  THR A  88   N  GLU A  13           
SHEET    1   B 2 LYS A  76  THR A  79  0                                        
SHEET    2   B 2 GLY A  82  THR A  85 -1  O  GLN A  84   N  ARG A  77           
SHEET    1   C 2 LEU B  12  THR B  14  0                                        
SHEET    2   C 2 LEU B  87  LEU B  89 -1  O  THR B  88   N  GLU B  13           
SHEET    1   D 2 LYS B  76  THR B  79  0                                        
SHEET    2   D 2 GLY B  82  THR B  85 -1  O  GLN B  84   N  ARG B  77           
SHEET    1   E 2 LEU C  12  THR C  14  0                                        
SHEET    2   E 2 LEU C  87  LEU C  89 -1  O  THR C  88   N  GLU C  13           
SHEET    1   F 2 LYS C  76  THR C  79  0                                        
SHEET    2   F 2 GLY C  82  THR C  85 -1  O  GLN C  84   N  ARG C  77           
SHEET    1   G 2 LEU D  12  THR D  14  0                                        
SHEET    2   G 2 LEU D  87  LEU D  89 -1  O  THR D  88   N  GLU D  13           
SHEET    1   H 2 LYS D  76  HIS D  78  0                                        
SHEET    2   H 2 ILE D  83  THR D  85 -1  O  GLN D  84   N  ARG D  77           
SHEET    1   I 2 LEU E  12  THR E  14  0                                        
SHEET    2   I 2 LEU E  87  LEU E  89 -1  O  THR E  88   N  GLU E  13           
SHEET    1   J 2 LEU F  12  THR F  14  0                                        
SHEET    2   J 2 LEU F  87  LEU F  89 -1  O  THR F  88   N  GLU F  13           
CRYST1   82.549   82.549  232.629  90.00  90.00 120.00 P 31 2 1     36          
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      0.012114  0.006994  0.000000        0.00000                         
SCALE2      0.000000  0.013988  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.004299        0.00000