HEADER    TOXIN                                   26-OCT-10   3PEE              
TITLE     STRUCTURE OF THE C. DIFFICILE TCDB CYSTEINE PROTEASE DOMAIN           
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: TOXIN B;                                                   
COMPND   3 CHAIN: B, A;                                                         
COMPND   4 FRAGMENT: UNP RESIDUES 544-797;                                      
COMPND   5 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: CLOSTRIDIUM DIFFICILE;                          
SOURCE   3 ORGANISM_TAXID: 272563;                                              
SOURCE   4 STRAIN: 630;                                                         
SOURCE   5 GENE: CD0660, TCDB;                                                  
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 511693;                                     
SOURCE   8 EXPRESSION_SYSTEM_STRAIN: BL21;                                      
SOURCE   9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  10 EXPRESSION_SYSTEM_PLASMID: PET22B                                    
KEYWDS    CLAN CD CYSTEINE PROTEASE, PROTEASE, INOSITOL HEXAKISPHOSPHATE, TOXIN 
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    P.J.LUPARDUS,K.C.GARCIA                                               
REVDAT   5   06-SEP-23 3PEE    1       REMARK                                   
REVDAT   4   14-OCT-20 3PEE    1       REMARK HETSYN LINK                       
REVDAT   3   31-AUG-11 3PEE    1       JRNL                                     
REVDAT   2   13-JUL-11 3PEE    1       VERSN                                    
REVDAT   1   16-FEB-11 3PEE    0                                                
JRNL        AUTH   A.SHEN,P.J.LUPARDUS,M.M.GERSCH,A.W.PURI,V.E.ALBROW,          
JRNL        AUTH 2 K.C.GARCIA,M.BOGYO                                           
JRNL        TITL   DEFINING AN ALLOSTERIC CIRCUIT IN THE CYSTEINE PROTEASE      
JRNL        TITL 2 DOMAIN OF CLOSTRIDIUM DIFFICILE TOXINS.                      
JRNL        REF    NAT.STRUCT.MOL.BIOL.          V.  18   364 2011              
JRNL        REFN                   ISSN 1545-9993                               
JRNL        PMID   21317893                                                     
JRNL        DOI    10.1038/NSMB.1990                                            
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.10 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : PHENIX (PHENIX.REFINE: 1.6.1_357)                    
REMARK   3   AUTHORS     : PAUL ADAMS,PAVEL AFONINE,VINCENT CHEN,IAN            
REMARK   3               : DAVIS,KRESHNA GOPAL,RALF GROSSE-KUNSTLEVE,           
REMARK   3               : LI-WEI HUNG,ROBERT IMMORMINO,TOM IOERGER,            
REMARK   3               : AIRLIE MCCOY,ERIK MCKEE,NIGEL MORIARTY,              
REMARK   3               : REETAL PAI,RANDY READ,JANE RICHARDSON,               
REMARK   3               : DAVID RICHARDSON,TOD ROMO,JIM SACCHETTINI,           
REMARK   3               : NICHOLAS SAUTER,JACOB SMITH,LAURENT                  
REMARK   3               : STORONI,TOM TERWILLIGER,PETER ZWART                  
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : ML                                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.10                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 39.66                          
REMARK   3   MIN(FOBS/SIGMA_FOBS)              : 0.030                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 90.8                           
REMARK   3   NUMBER OF REFLECTIONS             : 26305                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   R VALUE     (WORKING + TEST SET) : 0.194                           
REMARK   3   R VALUE            (WORKING SET) : 0.192                           
REMARK   3   FREE R VALUE                     : 0.240                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.080                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 1337                            
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT (IN BINS).                           
REMARK   3   BIN  RESOLUTION RANGE  COMPL.    NWORK NFREE   RWORK  RFREE        
REMARK   3     1 39.6636 -  4.5288    1.00     2846   141  0.1643 0.1729        
REMARK   3     2  4.5288 -  3.5954    0.99     2754   145  0.1408 0.2043        
REMARK   3     3  3.5954 -  3.1412    0.99     2747   141  0.1829 0.2141        
REMARK   3     4  3.1412 -  2.8540    0.97     2626   147  0.2227 0.2725        
REMARK   3     5  2.8540 -  2.6495    0.95     2620   132  0.2310 0.3075        
REMARK   3     6  2.6495 -  2.4933    0.92     2498   139  0.2277 0.3072        
REMARK   3     7  2.4933 -  2.3685    0.88     2420   123  0.2342 0.2897        
REMARK   3     8  2.3685 -  2.2654    0.84     2274   108  0.2391 0.3003        
REMARK   3     9  2.2654 -  2.1782    0.81     2184   115  0.2471 0.3429        
REMARK   3    10  2.1782 -  2.1000    0.74     1999   146  0.2570 0.3128        
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED        : FLAT BULK SOLVENT MODEL                       
REMARK   3   SOLVENT RADIUS     : 1.11                                          
REMARK   3   SHRINKAGE RADIUS   : 0.90                                          
REMARK   3   K_SOL              : 0.32                                          
REMARK   3   B_SOL              : 32.83                                         
REMARK   3                                                                      
REMARK   3  ERROR ESTIMATES.                                                    
REMARK   3   COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED)     : 0.310            
REMARK   3   PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : NULL             
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 36.60                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : NULL                           
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -4.30590                                             
REMARK   3    B22 (A**2) : 0.61630                                              
REMARK   3    B33 (A**2) : 3.68960                                              
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 0.48600                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  TWINNING INFORMATION.                                               
REMARK   3   FRACTION: NULL                                                     
REMARK   3   OPERATOR: NULL                                                     
REMARK   3                                                                      
REMARK   3  DEVIATIONS FROM IDEAL VALUES.                                       
REMARK   3                 RMSD          COUNT                                  
REMARK   3   BOND      :  0.008           3993                                  
REMARK   3   ANGLE     :  1.308           5413                                  
REMARK   3   CHIRALITY :  0.081            608                                  
REMARK   3   PLANARITY :  0.004            679                                  
REMARK   3   DIHEDRAL  : 16.200           1516                                  
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : NULL                                       
REMARK   3                                                                      
REMARK   3  NCS DETAILS                                                         
REMARK   3   NUMBER OF NCS GROUPS : 8                                           
REMARK   3   NCS GROUP : 1                                                      
REMARK   3    NCS OPERATOR : 1                                                  
REMARK   3     REFERENCE SELECTION: CHAIN A AND RESSEQ 19:44                    
REMARK   3     SELECTION          : CHAIN B AND RESSEQ 19:44                    
REMARK   3     ATOM PAIRS NUMBER  : 203                                         
REMARK   3     RMSD               : 0.040                                       
REMARK   3   NCS GROUP : 2                                                      
REMARK   3    NCS OPERATOR : 1                                                  
REMARK   3     REFERENCE SELECTION: CHAIN A AND RESSEQ 89:159                   
REMARK   3     SELECTION          : CHAIN B AND RESSEQ 89:159                   
REMARK   3     ATOM PAIRS NUMBER  : 546                                         
REMARK   3     RMSD               : 0.062                                       
REMARK   3   NCS GROUP : 3                                                      
REMARK   3    NCS OPERATOR : 1                                                  
REMARK   3     REFERENCE SELECTION: CHAIN A AND RESSEQ 78:85                    
REMARK   3     SELECTION          : CHAIN B AND RESSEQ 78:85                    
REMARK   3     ATOM PAIRS NUMBER  : 57                                          
REMARK   3     RMSD               : 0.029                                       
REMARK   3   NCS GROUP : 4                                                      
REMARK   3    NCS OPERATOR : 1                                                  
REMARK   3     REFERENCE SELECTION: CHAIN A AND RESSEQ 167:197                  
REMARK   3     SELECTION          : CHAIN B AND RESSEQ 167:197                  
REMARK   3     ATOM PAIRS NUMBER  : 236                                         
REMARK   3     RMSD               : 0.042                                       
REMARK   3   NCS GROUP : 5                                                      
REMARK   3    NCS OPERATOR : 1                                                  
REMARK   3     REFERENCE SELECTION: CHAIN A AND RESSEQ 202:212                  
REMARK   3     SELECTION          : CHAIN B AND RESSEQ 202:212                  
REMARK   3     ATOM PAIRS NUMBER  : 93                                          
REMARK   3     RMSD               : 0.042                                       
REMARK   3   NCS GROUP : 6                                                      
REMARK   3    NCS OPERATOR : 1                                                  
REMARK   3     REFERENCE SELECTION: CHAIN A AND RESSEQ 219:236                  
REMARK   3     SELECTION          : CHAIN B AND RESSEQ 219:236                  
REMARK   3     ATOM PAIRS NUMBER  : 146                                         
REMARK   3     RMSD               : 0.044                                       
REMARK   3   NCS GROUP : 7                                                      
REMARK   3    NCS OPERATOR : 1                                                  
REMARK   3     REFERENCE SELECTION: CHAIN A AND RESSEQ 246:254                  
REMARK   3     SELECTION          : CHAIN B AND RESSEQ 246:254                  
REMARK   3     ATOM PAIRS NUMBER  : 47                                          
REMARK   3     RMSD               : 0.100                                       
REMARK   3   NCS GROUP : 8                                                      
REMARK   3    NCS OPERATOR : 1                                                  
REMARK   3     REFERENCE SELECTION: CHAIN A AND RESSEQ 50:76                    
REMARK   3     SELECTION          : CHAIN B AND RESSEQ 50:76                    
REMARK   3     ATOM PAIRS NUMBER  : 214                                         
REMARK   3     RMSD               : 0.045                                       
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 3PEE COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 29-OCT-10.                  
REMARK 100 THE DEPOSITION ID IS D_1000062276.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 03-DEC-09                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 8.0                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : ALS                                
REMARK 200  BEAMLINE                       : 8.2.1                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.0                                
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 315R                  
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : MOSFLM                             
REMARK 200  DATA SCALING SOFTWARE          : SCALA                              
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 28295                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.100                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 50.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 97.6                               
REMARK 200  DATA REDUNDANCY                : 3.200                              
REMARK 200  R MERGE                    (I) : 0.07300                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 8.4000                             
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.10                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.22                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 91.8                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 2.60                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.49000                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 1.800                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: PHASER                                                
REMARK 200 STARTING MODEL: PDB ENTRY 3HO6                                       
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 42.82                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.15                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 0.1M TRIS HCL PH 8.0, 30% PEG2000MME,    
REMARK 280  VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 293K                     
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 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       3555   X+1/2,Y+1/2,Z                                           
REMARK 290       4555   -X+1/2,Y+1/2,-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   SMTRY1   3  1.000000  0.000000  0.000000       64.05500            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       22.85500            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   4 -1.000000  0.000000  0.000000       64.05500            
REMARK 290   SMTRY2   4  0.000000  1.000000  0.000000       22.85500            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1, 2                                                    
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: MONOMERIC                         
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                                                                      
REMARK 350 BIOMOLECULE: 2                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC                         
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 375                                                                      
REMARK 375 SPECIAL POSITION                                                     
REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS            
REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL          
REMARK 375 POSITIONS.                                                           
REMARK 375                                                                      
REMARK 375 ATOM RES CSSEQI                                                      
REMARK 375      HOH B 289  LIES ON A SPECIAL POSITION.                          
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     GLY B     1                                                      
REMARK 465     GLU B     2                                                      
REMARK 465     ASP B     3                                                      
REMARK 465     ASP B     4                                                      
REMARK 465     ASN B     5                                                      
REMARK 465     LEU B     6                                                      
REMARK 465     ASP B     7                                                      
REMARK 465     PHE B     8                                                      
REMARK 465     PRO B   252                                                      
REMARK 465     GLU B   253                                                      
REMARK 465     LEU B   254                                                      
REMARK 465     GLY A     1                                                      
REMARK 465     GLU A     2                                                      
REMARK 465     ASP A     3                                                      
REMARK 465     ASP A     4                                                      
REMARK 465     ASN A     5                                                      
REMARK 465     LEU A     6                                                      
REMARK 465     ASP A     7                                                      
REMARK 465     PRO A   252                                                      
REMARK 465     GLU A   253                                                      
REMARK 465     LEU A   254                                                      
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     SER B   9    OG                                                  
REMARK 470     VAL B  13    CG1  CG2                                            
REMARK 470     ASP B  82    CG   OD1  OD2                                       
REMARK 470     ASP B 113    CG   OD1  OD2                                       
REMARK 470     GLU B 114    CG   CD   OE1  OE2                                  
REMARK 470     SER B 215    OG                                                  
REMARK 470     LYS B 240    CG   CD   CE   NZ                                   
REMARK 470     GLU B 241    CG   CD   OE1  OE2                                  
REMARK 470     SER A  29    OG                                                  
REMARK 470     ASP A  82    CG   OD1  OD2                                       
REMARK 470     ASP A 113    CG   OD1  OD2                                       
REMARK 470     GLU A 114    CG   CD   OE1  OE2                                  
REMARK 470     SER A 215    OG                                                  
REMARK 470     LYS A 240    CG   CD   CE   NZ                                   
REMARK 470     GLU A 241    CG   CD   OE1  OE2                                  
REMARK 470     ASN A 242    CG   OD1  ND2                                       
REMARK 470     LYS A 243    CG   CD   CE   NZ                                   
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    LYS B 112   CD  -  CE  -  NZ  ANGL. DEV. =  18.6 DEGREES          
REMARK 500    LYS A 112   CD  -  CE  -  NZ  ANGL. DEV. =  18.1 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    ASN B  11       50.45     29.81                                   
REMARK 500    TYR B 199     -144.03   -124.56                                   
REMARK 500    ASP B 213     -159.05    -71.98                                   
REMARK 500    SER B 215        3.62    -64.21                                   
REMARK 500    ASN B 242       52.48     37.88                                   
REMARK 500    VAL A  14      127.69    -38.33                                   
REMARK 500    TYR A 199     -150.28   -122.24                                   
REMARK 500    LYS A 240       13.31     85.51                                   
REMARK 500    GLU A 241       -8.88   -145.68                                   
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                              CA B 255  CA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 IHP B 256   O32                                                    
REMARK 620 2 IHP B 256   O23  94.6                                              
REMARK 620 3 IHP B 256   O42  52.5  93.5                                        
REMARK 620 4 HOH B 282   O    77.6  79.9 129.2                                  
REMARK 620 5 IHP A 255   O23  84.4 175.4  89.5  95.5                            
REMARK 620 6 IHP A 255   O32 151.0  84.2 156.4  73.6  94.4                      
REMARK 620 7 HOH A 307   O   109.5  91.8  57.0 169.6  92.8  99.5                
REMARK 620 N                    1     2     3     4     5     6                 
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA B 255                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE IHP B 256                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE IHP A 255                 
DBREF  3PEE B    1   254  UNP    Q189K3   Q189K3_CLOD6   544    797             
DBREF  3PEE A    1   254  UNP    Q189K3   Q189K3_CLOD6   544    797             
SEQRES   1 B  254  GLY GLU ASP ASP ASN LEU ASP PHE SER GLN ASN ILE VAL          
SEQRES   2 B  254  VAL ASP LYS GLU TYR LEU LEU GLU LYS ILE SER SER LEU          
SEQRES   3 B  254  ALA ARG SER SER GLU ARG GLY TYR ILE HIS TYR ILE VAL          
SEQRES   4 B  254  GLN LEU GLN GLY ASP LYS ILE SER TYR GLU ALA ALA CYS          
SEQRES   5 B  254  ASN LEU PHE ALA LYS THR PRO TYR ASP SER VAL LEU PHE          
SEQRES   6 B  254  GLN LYS ASN ILE GLU ASP SER GLU ILE ALA TYR TYR TYR          
SEQRES   7 B  254  ASN PRO GLY ASP GLY GLU ILE GLN GLU ILE ASP LYS TYR          
SEQRES   8 B  254  LYS ILE PRO SER ILE ILE SER ASP ARG PRO LYS ILE LYS          
SEQRES   9 B  254  LEU THR PHE ILE GLY HIS GLY LYS ASP GLU PHE ASN THR          
SEQRES  10 B  254  ASP ILE PHE ALA GLY PHE ASP VAL ASP SER LEU SER THR          
SEQRES  11 B  254  GLU ILE GLU ALA ALA ILE ASP LEU ALA LYS GLU ASP ILE          
SEQRES  12 B  254  SER PRO LYS SER ILE GLU ILE ASN LEU LEU GLY CYS ASN          
SEQRES  13 B  254  MET PHE SER TYR SER ILE ASN VAL GLU GLU THR TYR PRO          
SEQRES  14 B  254  GLY LYS LEU LEU LEU LYS VAL LYS ASP LYS ILE SER GLU          
SEQRES  15 B  254  LEU MET PRO SER ILE SER GLN ASP SER ILE ILE VAL SER          
SEQRES  16 B  254  ALA ASN GLN TYR GLU VAL ARG ILE ASN SER GLU GLY ARG          
SEQRES  17 B  254  ARG GLU LEU LEU ASP HIS SER GLY GLU TRP ILE ASN LYS          
SEQRES  18 B  254  GLU GLU SER ILE ILE LYS ASP ILE SER SER LYS GLU TYR          
SEQRES  19 B  254  ILE SER PHE ASN PRO LYS GLU ASN LYS ILE THR VAL LYS          
SEQRES  20 B  254  SER LYS ASN LEU PRO GLU LEU                                  
SEQRES   1 A  254  GLY GLU ASP ASP ASN LEU ASP PHE SER GLN ASN ILE VAL          
SEQRES   2 A  254  VAL ASP LYS GLU TYR LEU LEU GLU LYS ILE SER SER LEU          
SEQRES   3 A  254  ALA ARG SER SER GLU ARG GLY TYR ILE HIS TYR ILE VAL          
SEQRES   4 A  254  GLN LEU GLN GLY ASP LYS ILE SER TYR GLU ALA ALA CYS          
SEQRES   5 A  254  ASN LEU PHE ALA LYS THR PRO TYR ASP SER VAL LEU PHE          
SEQRES   6 A  254  GLN LYS ASN ILE GLU ASP SER GLU ILE ALA TYR TYR TYR          
SEQRES   7 A  254  ASN PRO GLY ASP GLY GLU ILE GLN GLU ILE ASP LYS TYR          
SEQRES   8 A  254  LYS ILE PRO SER ILE ILE SER ASP ARG PRO LYS ILE LYS          
SEQRES   9 A  254  LEU THR PHE ILE GLY HIS GLY LYS ASP GLU PHE ASN THR          
SEQRES  10 A  254  ASP ILE PHE ALA GLY PHE ASP VAL ASP SER LEU SER THR          
SEQRES  11 A  254  GLU ILE GLU ALA ALA ILE ASP LEU ALA LYS GLU ASP ILE          
SEQRES  12 A  254  SER PRO LYS SER ILE GLU ILE ASN LEU LEU GLY CYS ASN          
SEQRES  13 A  254  MET PHE SER TYR SER ILE ASN VAL GLU GLU THR TYR PRO          
SEQRES  14 A  254  GLY LYS LEU LEU LEU LYS VAL LYS ASP LYS ILE SER GLU          
SEQRES  15 A  254  LEU MET PRO SER ILE SER GLN ASP SER ILE ILE VAL SER          
SEQRES  16 A  254  ALA ASN GLN TYR GLU VAL ARG ILE ASN SER GLU GLY ARG          
SEQRES  17 A  254  ARG GLU LEU LEU ASP HIS SER GLY GLU TRP ILE ASN LYS          
SEQRES  18 A  254  GLU GLU SER ILE ILE LYS ASP ILE SER SER LYS GLU TYR          
SEQRES  19 A  254  ILE SER PHE ASN PRO LYS GLU ASN LYS ILE THR VAL LYS          
SEQRES  20 A  254  SER LYS ASN LEU PRO GLU LEU                                  
HET     CA  B 255       1                                                       
HET    IHP  B 256      36                                                       
HET    IHP  A 255      36                                                       
HETNAM      CA CALCIUM ION                                                      
HETNAM     IHP INOSITOL HEXAKISPHOSPHATE                                        
HETSYN     IHP MYO-INOSITOL HEXAKISPHOSPHATE; INOSITOL 1,2,3,4,5,6-             
HETSYN   2 IHP  HEXAKISPHOSPHATE                                                
FORMUL   3   CA    CA 2+                                                        
FORMUL   4  IHP    2(C6 H18 O24 P6)                                             
FORMUL   6  HOH   *218(H2 O)                                                    
HELIX    1   1 ASP B   15  ALA B   27  1                                  13    
HELIX    2   2 ASP B   44  THR B   58  1                                  15    
HELIX    3   3 VAL B  125  LYS B  140  1                                  16    
HELIX    4   4 ASN B  163  GLU B  166  5                                   4    
HELIX    5   5 THR B  167  MET B  184  1                                  18    
HELIX    6   6 ASN B  220  LYS B  227  1                                   8    
HELIX    7   7 ASP A   15  ALA A   27  1                                  13    
HELIX    8   8 ASP A   44  THR A   58  1                                  15    
HELIX    9   9 VAL A  125  LYS A  140  1                                  16    
HELIX   10  10 ASN A  163  GLU A  166  5                                   4    
HELIX   11  11 THR A  167  MET A  184  1                                  18    
HELIX   12  12 ASN A  220  LYS A  227  1                                   8    
SHEET    1   A 9 GLU B  84  ASP B  89  0                                        
SHEET    2   A 9 ILE B  74  ASN B  79 -1  N  TYR B  77   O  GLN B  86           
SHEET    3   A 9 SER B  62  GLN B  66 -1  N  LEU B  64   O  TYR B  76           
SHEET    4   A 9 ILE B  35  GLN B  40  1  N  ILE B  38   O  VAL B  63           
SHEET    5   A 9 LYS B 102  ILE B 108  1  O  THR B 106   N  VAL B  39           
SHEET    6   A 9 SER B 147  LEU B 153  1  O  ASN B 151   N  LEU B 105           
SHEET    7   A 9 ILE B 192  ALA B 196  1  O  ILE B 193   N  ILE B 150           
SHEET    8   A 9 GLU B 233  ASN B 238 -1  O  ILE B 235   N  VAL B 194           
SHEET    9   A 9 LYS B 243  SER B 248 -1  O  LYS B 247   N  TYR B 234           
SHEET    1   B 2 ILE B 119  PHE B 120  0                                        
SHEET    2   B 2 PHE B 123  ASP B 124 -1  O  PHE B 123   N  PHE B 120           
SHEET    1   C 3 VAL B 201  ILE B 203  0                                        
SHEET    2   C 3 ARG B 209  LEU B 212 -1  O  GLU B 210   N  ARG B 202           
SHEET    3   C 3 TRP B 218  ILE B 219 -1  O  ILE B 219   N  LEU B 211           
SHEET    1   D 9 GLU A  84  ASP A  89  0                                        
SHEET    2   D 9 ILE A  74  ASN A  79 -1  N  TYR A  77   O  GLN A  86           
SHEET    3   D 9 SER A  62  GLN A  66 -1  N  LEU A  64   O  TYR A  76           
SHEET    4   D 9 ILE A  35  GLN A  40  1  N  ILE A  38   O  VAL A  63           
SHEET    5   D 9 LYS A 102  ILE A 108  1  O  THR A 106   N  VAL A  39           
SHEET    6   D 9 SER A 147  LEU A 153  1  O  ASN A 151   N  LEU A 105           
SHEET    7   D 9 ILE A 192  ALA A 196  1  O  ILE A 193   N  ILE A 150           
SHEET    8   D 9 GLU A 233  ASN A 238 -1  O  ILE A 235   N  VAL A 194           
SHEET    9   D 9 LYS A 243  SER A 248 -1  O  LYS A 247   N  TYR A 234           
SHEET    1   E 2 ILE A 119  PHE A 120  0                                        
SHEET    2   E 2 PHE A 123  ASP A 124 -1  O  PHE A 123   N  PHE A 120           
SHEET    1   F 3 VAL A 201  ILE A 203  0                                        
SHEET    2   F 3 ARG A 209  LEU A 212 -1  O  GLU A 210   N  ARG A 202           
SHEET    3   F 3 TRP A 218  ILE A 219 -1  O  ILE A 219   N  LEU A 211           
LINK        CA    CA B 255                 O32 IHP B 256     1555   1555  2.43  
LINK        CA    CA B 255                 O23 IHP B 256     1555   1555  2.47  
LINK        CA    CA B 255                 O42 IHP B 256     1555   1555  3.20  
LINK        CA    CA B 255                 O   HOH B 282     1555   1555  2.66  
LINK        CA    CA B 255                 O23 IHP A 255     1555   1555  2.44  
LINK        CA    CA B 255                 O32 IHP A 255     1555   1555  2.48  
LINK        CA    CA B 255                 O   HOH A 307     1555   1555  2.37  
SITE     1 AC1  4 IHP A 255  HOH A 307  IHP B 256  HOH B 282                    
SITE     1 AC2 28 IHP A 255  HOH A 307  ARG B  28  ARG B  32                    
SITE     2 AC2 28 TYR B  34  LEU B  54  LYS B  57  LYS B 104                    
SITE     3 AC2 28 ARG B 208  ARG B 209  LYS B 221  LYS B 232                    
SITE     4 AC2 28 LYS B 249   CA B 255  HOH B 257  HOH B 264                    
SITE     5 AC2 28 HOH B 265  HOH B 282  HOH B 284  HOH B 287                    
SITE     6 AC2 28 HOH B 290  HOH B 292  HOH B 296  HOH B 298                    
SITE     7 AC2 28 HOH B 299  HOH B 322  HOH B 339  HOH B 341                    
SITE     1 AC3 29 ARG A  28  ARG A  32  TYR A  34  LEU A  54                    
SITE     2 AC3 29 LYS A  57  LYS A 104  ARG A 208  ARG A 209                    
SITE     3 AC3 29 LYS A 221  LYS A 232  TYR A 234  LYS A 249                    
SITE     4 AC3 29 HOH A 257  HOH A 265  HOH A 272  HOH A 280                    
SITE     5 AC3 29 HOH A 284  HOH A 286  HOH A 292  HOH A 307                    
SITE     6 AC3 29 HOH A 315  HOH A 350  HOH A 371  HOH A 372                    
SITE     7 AC3 29 HOH A 374  HOH A 377   CA B 255  IHP B 256                    
SITE     8 AC3 29 HOH B 282                                                     
CRYST1  128.110   45.710   87.350  90.00 103.48  90.00 C 1 2 1       8          
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      0.007806  0.000000  0.001871        0.00000                         
SCALE2      0.000000  0.021877  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.011773        0.00000