HEADER    HYDROLASE                               21-SEP-99   1QM6              
TITLE     CLOSED FORM OF CLOSTRIDIUM PERFRINGENS ALPHA-TOXIN STRAIN NCTC8237    
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: PHOSPHOLIPASE C;                                           
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 SYNONYM: PLC, PHOSPHATIDYLCHOLINE, ALPHA-TOXIN, HEMOLYSIN,           
COMPND   5 CHOLINEPHOSPHOHYDROLASE, LECITHINASE;                                
COMPND   6 EC: 3.1.4.3;                                                         
COMPND   7 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: CLOSTRIDIUM PERFRINGENS;                        
SOURCE   3 ORGANISM_TAXID: 1502;                                                
SOURCE   4 STRAIN: NCTC8237;                                                    
SOURCE   5 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   6 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   7 EXPRESSION_SYSTEM_STRAIN: JM109;                                     
SOURCE   8 EXPRESSION_SYSTEM_CELLULAR_LOCATION: PERIPLASMIC;                    
SOURCE   9 EXPRESSION_SYSTEM_VECTOR_TYPE: BACTERIUM;                            
SOURCE  10 EXPRESSION_SYSTEM_PLASMID: PUC18;                                    
SOURCE  11 EXPRESSION_SYSTEM_GENE: CPA                                          
KEYWDS    HYDROLASE, ZINC PHOSPHOLIPASE C, GANGRENE DETERMINANT, C2 DOMAIN, CA  
KEYWDS   2 AND MEMBRANE BINDING.                                                
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    C.E.NAYLOR,J.MILLER,R.W.TITBALL,A.K.BASAK                             
REVDAT   6   13-DEC-23 1QM6    1       REMARK LINK                              
REVDAT   5   08-MAY-19 1QM6    1       REMARK                                   
REVDAT   4   24-FEB-09 1QM6    1       VERSN                                    
REVDAT   3   10-APR-00 1QM6    1       JRNL                                     
REVDAT   2   03-DEC-99 1QM6    1       AUTHOR                                   
REVDAT   1   27-SEP-99 1QM6    0                                                
JRNL        AUTH   C.E.NAYLOR,M.JEPSON,D.T.CRANE,R.W.TITBALL,J.MILLER,          
JRNL        AUTH 2 A.K.BASAK,B.BOLGIANO                                         
JRNL        TITL   CHARACTERISATION OF THE CALCIUM-BINDING C-TERMINAL DOMAIN OF 
JRNL        TITL 2 CLOSTRIDIUM PERFRINGENS ALPHA-TOXIN                          
JRNL        REF    J.MOL.BIOL.                   V. 294   757 1999              
JRNL        REFN                   ISSN 0022-2836                               
JRNL        PMID   10610794                                                     
JRNL        DOI    10.1006/JMBI.1999.3279                                       
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   C.E.NAYLOR,J.T.EATON,A.HOWELLS,N.JUSTIN,D.S.MOSS,            
REMARK   1  AUTH 2 R.W.TITBALL,A.K.BASAK                                        
REMARK   1  TITL   STRUCTURE OF THE KEY TOXIN IN GAS-GANGRENE                   
REMARK   1  REF    NAT.STRUCT.BIOL.              V.   5   738 1998              
REMARK   1  REFN                   ISSN 1072-8368                               
REMARK   1  PMID   9699639                                                      
REMARK   1  DOI    10.1038/1447                                                 
REMARK   1 REFERENCE 2                                                          
REMARK   1  AUTH   A.K.BASAK,A.HOWELLS,J.T.EATON,D.S.MOSS,C.NAYLOR,J.MILLER,    
REMARK   1  AUTH 2 R.W.TITBALL                                                  
REMARK   1  TITL   CRYSTALLISATION AND PRELIMINARY X-RAY DIFFRACTION STUDIES OF 
REMARK   1  TITL 2 ALPHA-TOXIN FROM TWO DIFFERENT STRAINS (NCTC-8237 AND        
REMARK   1  TITL 3 CER89L43) OF CLOSTRIDIUM PERFRINGENS                         
REMARK   1  REF    ACTA CRYSTALLOGR.,SECT.D      V.  54  1425 1998              
REMARK   1  REFN                   ISSN 0907-4449                               
REMARK   1  PMID   10089527                                                     
REMARK   1  DOI    10.1107/S0907444998005186                                    
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.50 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS 0.5                                              
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 : NULL                                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.50                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 30.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 10000.000                      
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 90.2                           
REMARK   3   NUMBER OF REFLECTIONS             : 26163                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : THROUGHOUT                      
REMARK   3   FREE R VALUE TEST SET SELECTION  : SAME AS FOR PDB 1CA1            
REMARK   3   R VALUE            (WORKING SET) : 0.220                           
REMARK   3   FREE R VALUE                     : 0.247                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 4.400                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 1291                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : NULL                            
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 10                           
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.50                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.60                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 90.00                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 2305                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2690                       
REMARK   3   BIN FREE R VALUE                    : 0.2670                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 4.40                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 107                          
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : NULL                         
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 6012                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 4                                       
REMARK   3   SOLVENT ATOMS            : 89                                      
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 28.80                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 18.90                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 4.44200                                              
REMARK   3    B22 (A**2) : 4.44200                                              
REMARK   3    B33 (A**2) : -8.88400                                             
REMARK   3    B12 (A**2) : 0.43600                                              
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) : 0.30                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.29                            
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) : 0.34                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.28                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.008                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.270                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 23.27                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 1.160                           
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) : 1.170 ; 1.500                
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : 2.070 ; 2.000                
REMARK   3   SIDE-CHAIN BOND              (A**2) : 1.850 ; 2.000                
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : 3.070 ; 2.500                
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : FLAT MODEL (ANISOTROPIC)                             
REMARK   3   KSOL        : 0.41                                                 
REMARK   3   BSOL        : 10.00                                                
REMARK   3                                                                      
REMARK   3  NCS MODEL : NULL                                                    
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS.                         RMS   SIGMA/WEIGHT          
REMARK   3   GROUP  1  POSITIONAL            (A) : 0.031 ; 300                  
REMARK   3   GROUP  1  B-FACTOR           (A**2) : 1.95  ; 2.0                  
REMARK   3                                                                      
REMARK   3  PARAMETER FILE  1  : PARHCSDX.PRO                                   
REMARK   3  PARAMETER FILE  2  : PARAM19.SOL                                    
REMARK   3  PARAMETER FILE  3  : PARAM19.ION                                    
REMARK   3  PARAMETER FILE  4  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : TOPHCSDX.PRO                                   
REMARK   3  TOPOLOGY FILE  2   : PARAM19.SOL                                    
REMARK   3  TOPOLOGY FILE  3   : PARAM19.ION                                    
REMARK   3  TOPOLOGY FILE  4   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1QM6 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 21-SEP-99.                  
REMARK 100 THE DEPOSITION ID IS D_1290002783.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 15-JUN-98                          
REMARK 200  TEMPERATURE           (KELVIN) : 100.0                              
REMARK 200  PH                             : 4.70                               
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
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                  : GE(111)                            
REMARK 200  OPTICS                         : MIRRORS                            
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : MARRESEARCH                        
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALA                              
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 29145                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.600                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 30.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 90.5                               
REMARK 200  DATA REDUNDANCY                : 3.900                              
REMARK 200  R MERGE                    (I) : 0.12100                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 8.8000                             
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.60                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.70                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 87.9                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 3.60                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.33600                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 4.200                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: CNS 0.5, X-PLOR                                       
REMARK 200 STARTING MODEL: CALCIUM-FREE, CLOSED ALPHA-TOXIN STRAIN CER89L43     
REMARK 200  (PDB CODE: 1CA1)                                                    
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 50.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.45                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PROTEIN WAS CRYSTALLISED BY HANGING      
REMARK 280  DROP FROM 1.8-2.0 M NACL IN 0.1 M NA ACETATE, PH 4.7 OR 4.8, PH     
REMARK 280  4.70, VAPOR DIFFUSION, HANGING DROP                                 
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: H 3 2                            
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -Y,X-Y,Z                                                
REMARK 290       3555   -X+Y,-X,Z                                               
REMARK 290       4555   Y,X,-Z                                                  
REMARK 290       5555   X-Y,-Y,-Z                                               
REMARK 290       6555   -X,-X+Y,-Z                                              
REMARK 290       7555   X+2/3,Y+1/3,Z+1/3                                       
REMARK 290       8555   -Y+2/3,X-Y+1/3,Z+1/3                                    
REMARK 290       9555   -X+Y+2/3,-X+1/3,Z+1/3                                   
REMARK 290      10555   Y+2/3,X+1/3,-Z+1/3                                      
REMARK 290      11555   X-Y+2/3,-Y+1/3,-Z+1/3                                   
REMARK 290      12555   -X+2/3,-X+Y+1/3,-Z+1/3                                  
REMARK 290      13555   X+1/3,Y+2/3,Z+2/3                                       
REMARK 290      14555   -Y+1/3,X-Y+2/3,Z+2/3                                    
REMARK 290      15555   -X+Y+1/3,-X+2/3,Z+2/3                                   
REMARK 290      16555   Y+1/3,X+2/3,-Z+2/3                                      
REMARK 290      17555   X-Y+1/3,-Y+2/3,-Z+2/3                                   
REMARK 290      18555   -X+1/3,-X+Y+2/3,-Z+2/3                                  
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        0.00000            
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        0.00000            
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        0.00000            
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        0.00000            
REMARK 290   SMTRY1   7  1.000000  0.000000  0.000000       74.77000            
REMARK 290   SMTRY2   7  0.000000  1.000000  0.000000       43.16848            
REMARK 290   SMTRY3   7  0.000000  0.000000  1.000000       64.61000            
REMARK 290   SMTRY1   8 -0.500000 -0.866025  0.000000       74.77000            
REMARK 290   SMTRY2   8  0.866025 -0.500000  0.000000       43.16848            
REMARK 290   SMTRY3   8  0.000000  0.000000  1.000000       64.61000            
REMARK 290   SMTRY1   9 -0.500000  0.866025  0.000000       74.77000            
REMARK 290   SMTRY2   9 -0.866025 -0.500000  0.000000       43.16848            
REMARK 290   SMTRY3   9  0.000000  0.000000  1.000000       64.61000            
REMARK 290   SMTRY1  10 -0.500000  0.866025  0.000000       74.77000            
REMARK 290   SMTRY2  10  0.866025  0.500000  0.000000       43.16848            
REMARK 290   SMTRY3  10  0.000000  0.000000 -1.000000       64.61000            
REMARK 290   SMTRY1  11  1.000000  0.000000  0.000000       74.77000            
REMARK 290   SMTRY2  11  0.000000 -1.000000  0.000000       43.16848            
REMARK 290   SMTRY3  11  0.000000  0.000000 -1.000000       64.61000            
REMARK 290   SMTRY1  12 -0.500000 -0.866025  0.000000       74.77000            
REMARK 290   SMTRY2  12 -0.866025  0.500000  0.000000       43.16848            
REMARK 290   SMTRY3  12  0.000000  0.000000 -1.000000       64.61000            
REMARK 290   SMTRY1  13  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2  13  0.000000  1.000000  0.000000       86.33696            
REMARK 290   SMTRY3  13  0.000000  0.000000  1.000000      129.22000            
REMARK 290   SMTRY1  14 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2  14  0.866025 -0.500000  0.000000       86.33696            
REMARK 290   SMTRY3  14  0.000000  0.000000  1.000000      129.22000            
REMARK 290   SMTRY1  15 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2  15 -0.866025 -0.500000  0.000000       86.33696            
REMARK 290   SMTRY3  15  0.000000  0.000000  1.000000      129.22000            
REMARK 290   SMTRY1  16 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2  16  0.866025  0.500000  0.000000       86.33696            
REMARK 290   SMTRY3  16  0.000000  0.000000 -1.000000      129.22000            
REMARK 290   SMTRY1  17  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2  17  0.000000 -1.000000  0.000000       86.33696            
REMARK 290   SMTRY3  17  0.000000  0.000000 -1.000000      129.22000            
REMARK 290   SMTRY1  18 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2  18 -0.866025  0.500000  0.000000       86.33696            
REMARK 290   SMTRY3  18  0.000000  0.000000 -1.000000      129.22000            
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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC                  
REMARK 350 SOFTWARE USED: PQS                                                   
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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC                  
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 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 A  60       51.39   -111.06                                   
REMARK 500    ALA A  61     -112.21   -120.53                                   
REMARK 500    ASN A  82      -33.81     71.34                                   
REMARK 500    SER A  83       16.81    -60.07                                   
REMARK 500    HIS A 207      -40.39   -149.71                                   
REMARK 500    VAL A 251       97.56    -42.12                                   
REMARK 500    THR A 332     -167.30   -117.26                                   
REMARK 500    ASP A 336       59.05   -162.24                                   
REMARK 500    ILE A 357      -63.71   -120.26                                   
REMARK 500    ASN B  60       52.16   -111.73                                   
REMARK 500    ALA B  61     -112.01   -121.27                                   
REMARK 500    ASN B  82      -32.87     70.53                                   
REMARK 500    SER B  83       17.40    -60.88                                   
REMARK 500    HIS B 207      -40.08   -148.16                                   
REMARK 500    THR B 332     -167.50   -118.02                                   
REMARK 500    ASP B 336       58.64   -161.50                                   
REMARK 500    ILE B 357      -63.66   -121.72                                   
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                              ZN A 400  ZN                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 TRP A   1   O                                                      
REMARK 620 2 TRP A   1   N    71.9                                              
REMARK 620 3 HIS A  11   NE2  96.2 108.1                                        
REMARK 620 4 ASP A 130   OD1 162.7  94.1  97.9                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              ZN A 401  ZN                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 ASP A  56   OD1                                                    
REMARK 620 2 HIS A  68   ND1  77.6                                              
REMARK 620 3 HIS A 126   NE2  77.7 110.4                                        
REMARK 620 4 ASP A 130   OD2 151.5  91.1  82.0                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              ZN B 400  ZN                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 TRP B   1   N                                                      
REMARK 620 2 TRP B   1   O    73.1                                              
REMARK 620 3 HIS B  11   NE2 109.1  97.2                                        
REMARK 620 4 ASP B 130   OD1  94.1 162.4  98.4                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              ZN B 401  ZN                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 ASP B  56   OD1                                                    
REMARK 620 2 HIS B  68   ND1  78.3                                              
REMARK 620 3 HIS B 126   NE2  79.4 112.5                                        
REMARK 620 4 ASP B 130   OD2 155.0  91.9  83.4                                  
REMARK 620 N                    1     2     3                                   
REMARK 650                                                                      
REMARK 650 HELIX                                                                
REMARK 650 DETERMINATION METHOD: AUTHOR PROVIDED.                               
REMARK 700                                                                      
REMARK 700 SHEET                                                                
REMARK 700 DETERMINATION METHOD: AUTHOR PROVIDED.                               
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 400                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 401                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN B 400                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN B 401                  
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1AH7   RELATED DB: PDB                                   
REMARK 900 PHOSPHOLIPASE C FROM BACILLUS CEREUS                                 
REMARK 900 RELATED ID: 1CA1   RELATED DB: PDB                                   
REMARK 900 ALPHA-TOXIN FROM CLOSTRIDIUM PERFRINGENS                             
REMARK 900 RELATED ID: 1QMD   RELATED DB: PDB                                   
REMARK 900 CALCIUM BOUND CLOSED FORM ALPHA-TOXIN FROM CLOSTRIDIUM PERFRINGENS   
REMARK 999                                                                      
REMARK 999 SEQUENCE                                                             
REMARK 999 27 RESIDUES AT START OF SEQUENCE ARE A                               
REMARK 999 SIGNAL PEPTIDE NOT PRESENT IN MATURE, ACTIVE FOLDED                  
REMARK 999 PROTEIN.                                                             
DBREF  1QM6 A    1   370  UNP    P15310   PHLC_CLOPE      29    398             
DBREF  1QM6 B    1   370  UNP    P15310   PHLC_CLOPE      29    398             
SEQRES   1 A  370  TRP ASP GLY LYS ILE ASP GLY THR GLY THR HIS ALA MET          
SEQRES   2 A  370  ILE VAL THR GLN GLY VAL SER ILE LEU GLU ASN ASP LEU          
SEQRES   3 A  370  SER LYS ASN GLU PRO GLU SER VAL ARG LYS ASN LEU GLU          
SEQRES   4 A  370  ILE LEU LYS GLU ASN MET HIS GLU LEU GLN LEU GLY SER          
SEQRES   5 A  370  THR TYR PRO ASP TYR ASP LYS ASN ALA TYR ASP LEU TYR          
SEQRES   6 A  370  GLN ASP HIS PHE TRP ASP PRO ASP THR ASP ASN ASN PHE          
SEQRES   7 A  370  SER LYS ASP ASN SER TRP TYR LEU ALA TYR SER ILE PRO          
SEQRES   8 A  370  ASP THR GLY GLU SER GLN ILE ARG LYS PHE SER ALA LEU          
SEQRES   9 A  370  ALA ARG TYR GLU TRP GLN ARG GLY ASN TYR LYS GLN ALA          
SEQRES  10 A  370  THR PHE TYR LEU GLY GLU ALA MET HIS TYR PHE GLY ASP          
SEQRES  11 A  370  ILE ASP THR PRO TYR HIS PRO ALA ASN VAL THR ALA VAL          
SEQRES  12 A  370  ASP SER ALA GLY HIS VAL LYS PHE GLU THR PHE ALA GLU          
SEQRES  13 A  370  GLU ARG LYS GLU GLN TYR LYS ILE ASN THR ALA GLY CYS          
SEQRES  14 A  370  LYS THR ASN GLU ALA PHE TYR THR ASP ILE LEU LYS ASN          
SEQRES  15 A  370  LYS ASP PHE ASN ALA TRP SER LYS GLU TYR ALA ARG GLY          
SEQRES  16 A  370  PHE ALA LYS THR GLY LYS SER ILE TYR TYR SER HIS ALA          
SEQRES  17 A  370  SER MET SER HIS SER TRP ASP ASP TRP ASP TYR ALA ALA          
SEQRES  18 A  370  LYS VAL THR LEU ALA ASN SER GLN LYS GLY THR ALA GLY          
SEQRES  19 A  370  TYR ILE TYR ARG PHE LEU HIS ASP VAL SER GLU GLY ASN          
SEQRES  20 A  370  ASP PRO SER VAL GLY LYS ASN VAL LYS GLU LEU VAL ALA          
SEQRES  21 A  370  TYR ILE SER THR SER GLY GLU LYS ASP ALA GLY THR ASP          
SEQRES  22 A  370  ASP TYR MET TYR PHE GLY ILE LYS THR LYS ASP GLY LYS          
SEQRES  23 A  370  THR GLN GLU TRP GLU MET ASP ASN PRO GLY ASN ASP PHE          
SEQRES  24 A  370  MET THR GLY SER LYS ASP THR TYR THR PHE LYS LEU LYS          
SEQRES  25 A  370  ASP GLU ASN LEU LYS ILE ASP ASP ILE GLN ASN MET TRP          
SEQRES  26 A  370  ILE ARG LYS ARG LYS TYR THR ALA PHE SER ASP ALA TYR          
SEQRES  27 A  370  LYS PRO GLU ASN ILE LYS ILE ILE ALA ASN GLY LYS VAL          
SEQRES  28 A  370  VAL VAL ASP LYS ASP ILE ASN GLU TRP ILE SER GLY ASN          
SEQRES  29 A  370  SER THR TYR ASN ILE LYS                                      
SEQRES   1 B  370  TRP ASP GLY LYS ILE ASP GLY THR GLY THR HIS ALA MET          
SEQRES   2 B  370  ILE VAL THR GLN GLY VAL SER ILE LEU GLU ASN ASP LEU          
SEQRES   3 B  370  SER LYS ASN GLU PRO GLU SER VAL ARG LYS ASN LEU GLU          
SEQRES   4 B  370  ILE LEU LYS GLU ASN MET HIS GLU LEU GLN LEU GLY SER          
SEQRES   5 B  370  THR TYR PRO ASP TYR ASP LYS ASN ALA TYR ASP LEU TYR          
SEQRES   6 B  370  GLN ASP HIS PHE TRP ASP PRO ASP THR ASP ASN ASN PHE          
SEQRES   7 B  370  SER LYS ASP ASN SER TRP TYR LEU ALA TYR SER ILE PRO          
SEQRES   8 B  370  ASP THR GLY GLU SER GLN ILE ARG LYS PHE SER ALA LEU          
SEQRES   9 B  370  ALA ARG TYR GLU TRP GLN ARG GLY ASN TYR LYS GLN ALA          
SEQRES  10 B  370  THR PHE TYR LEU GLY GLU ALA MET HIS TYR PHE GLY ASP          
SEQRES  11 B  370  ILE ASP THR PRO TYR HIS PRO ALA ASN VAL THR ALA VAL          
SEQRES  12 B  370  ASP SER ALA GLY HIS VAL LYS PHE GLU THR PHE ALA GLU          
SEQRES  13 B  370  GLU ARG LYS GLU GLN TYR LYS ILE ASN THR ALA GLY CYS          
SEQRES  14 B  370  LYS THR ASN GLU ALA PHE TYR THR ASP ILE LEU LYS ASN          
SEQRES  15 B  370  LYS ASP PHE ASN ALA TRP SER LYS GLU TYR ALA ARG GLY          
SEQRES  16 B  370  PHE ALA LYS THR GLY LYS SER ILE TYR TYR SER HIS ALA          
SEQRES  17 B  370  SER MET SER HIS SER TRP ASP ASP TRP ASP TYR ALA ALA          
SEQRES  18 B  370  LYS VAL THR LEU ALA ASN SER GLN LYS GLY THR ALA GLY          
SEQRES  19 B  370  TYR ILE TYR ARG PHE LEU HIS ASP VAL SER GLU GLY ASN          
SEQRES  20 B  370  ASP PRO SER VAL GLY LYS ASN VAL LYS GLU LEU VAL ALA          
SEQRES  21 B  370  TYR ILE SER THR SER GLY GLU LYS ASP ALA GLY THR ASP          
SEQRES  22 B  370  ASP TYR MET TYR PHE GLY ILE LYS THR LYS ASP GLY LYS          
SEQRES  23 B  370  THR GLN GLU TRP GLU MET ASP ASN PRO GLY ASN ASP PHE          
SEQRES  24 B  370  MET THR GLY SER LYS ASP THR TYR THR PHE LYS LEU LYS          
SEQRES  25 B  370  ASP GLU ASN LEU LYS ILE ASP ASP ILE GLN ASN MET TRP          
SEQRES  26 B  370  ILE ARG LYS ARG LYS TYR THR ALA PHE SER ASP ALA TYR          
SEQRES  27 B  370  LYS PRO GLU ASN ILE LYS ILE ILE ALA ASN GLY LYS VAL          
SEQRES  28 B  370  VAL VAL ASP LYS ASP ILE ASN GLU TRP ILE SER GLY ASN          
SEQRES  29 B  370  SER THR TYR ASN ILE LYS                                      
HET     ZN  A 400       1                                                       
HET     ZN  A 401       1                                                       
HET     ZN  B 400       1                                                       
HET     ZN  B 401       1                                                       
HETNAM      ZN ZINC ION                                                         
FORMUL   3   ZN    4(ZN 2+)                                                     
FORMUL   7  HOH   *89(H2 O)                                                     
HELIX    1   1 GLY A    9  LEU A   26  1                                  18    
HELIX    2   2 PRO A   31  ASN A   44  1                                  14    
HELIX    3   3 ASN A   44  TYR A   54  1                                  11    
HELIX    4   4 PRO A   55  TYR A   57  5                                   3    
HELIX    5   5 ASP A   73  LYS A   80  1                                   8    
HELIX    6   6 THR A   93  GLN A  110  1                                  18    
HELIX    7   7 ASN A  113  ASP A  132  1                                  20    
HELIX    8   8 VAL A  149  LYS A  159  1                                  11    
HELIX    9   9 GLU A  160  LYS A  163  5                                   4    
HELIX   10  10 GLU A  173  ASN A  182  1                                  10    
HELIX   11  11 ASP A  184  HIS A  207  1                                  24    
HELIX   12  12 SER A  213  GLU A  245  1                                  33    
HELIX   13  13 LYS A  317  ASP A  319  5                                   3    
HELIX   14  14 GLY B    9  LEU B   26  1                                  18    
HELIX   15  15 PRO B   31  ASN B   44  1                                  14    
HELIX   16  16 ASN B   44  TYR B   54  1                                  11    
HELIX   17  17 PRO B   55  TYR B   57  5                                   3    
HELIX   18  18 ASP B   73  LYS B   80  1                                   8    
HELIX   19  19 THR B   93  GLN B  110  1                                  18    
HELIX   20  20 ASN B  113  ASP B  132  1                                  20    
HELIX   21  21 VAL B  149  LYS B  159  1                                  11    
HELIX   22  22 GLU B  160  LYS B  163  5                                   4    
HELIX   23  23 GLU B  173  ASN B  182  1                                  10    
HELIX   24  24 ASP B  184  HIS B  207  1                                  24    
HELIX   25  25 SER B  213  GLU B  245  1                                  33    
SHEET    1  AA 4 LYS A 304  LYS A 310  0                                        
SHEET    2  AA 4 GLU A 257  THR A 264 -1  O  LEU A 258   N  PHE A 309           
SHEET    3  AA 4 PRO A 340  ALA A 347 -1  N  GLU A 341   O  SER A 263           
SHEET    4  AA 4 LYS A 350  ASP A 356 -1  O  LYS A 350   N  ALA A 347           
SHEET    1  AB 4 THR A 287  GLU A 291  0                                        
SHEET    2  AB 4 TYR A 275  THR A 282 -1  O  PHE A 278   N  TRP A 290           
SHEET    3  AB 4 ILE A 321  ARG A 329 -1  N  GLN A 322   O  LYS A 281           
SHEET    4  AB 4 THR A 366  ASN A 368 -1  O  TYR A 367   N  ILE A 326           
SHEET    1  BA 4 LYS B 304  LYS B 310  0                                        
SHEET    2  BA 4 GLU B 257  THR B 264 -1  O  LEU B 258   N  PHE B 309           
SHEET    3  BA 4 PRO B 340  ALA B 347 -1  N  GLU B 341   O  SER B 263           
SHEET    4  BA 4 LYS B 350  ASP B 356 -1  O  LYS B 350   N  ALA B 347           
SHEET    1  BB 4 THR B 287  GLU B 291  0                                        
SHEET    2  BB 4 TYR B 275  THR B 282 -1  O  PHE B 278   N  TRP B 290           
SHEET    3  BB 4 ILE B 321  ARG B 329 -1  N  GLN B 322   O  LYS B 281           
SHEET    4  BB 4 THR B 366  ASN B 368 -1  O  TYR B 367   N  ILE B 326           
LINK         O   TRP A   1                ZN    ZN A 400     1555   1555  2.33  
LINK         N   TRP A   1                ZN    ZN A 400     1555   1555  2.44  
LINK         NE2 HIS A  11                ZN    ZN A 400     1555   1555  2.34  
LINK         OD1 ASP A  56                ZN    ZN A 401     1555   1555  2.52  
LINK         ND1 HIS A  68                ZN    ZN A 401     1555   1555  2.28  
LINK         NE2 HIS A 126                ZN    ZN A 401     1555   1555  2.34  
LINK         OD1 ASP A 130                ZN    ZN A 400     1555   1555  2.30  
LINK         OD2 ASP A 130                ZN    ZN A 401     1555   1555  2.44  
LINK         N   TRP B   1                ZN    ZN B 400     1555   1555  2.44  
LINK         O   TRP B   1                ZN    ZN B 400     1555   1555  2.36  
LINK         NE2 HIS B  11                ZN    ZN B 400     1555   1555  2.34  
LINK         OD1 ASP B  56                ZN    ZN B 401     1555   1555  2.49  
LINK         ND1 HIS B  68                ZN    ZN B 401     1555   1555  2.28  
LINK         NE2 HIS B 126                ZN    ZN B 401     1555   1555  2.31  
LINK         OD1 ASP B 130                ZN    ZN B 400     1555   1555  2.33  
LINK         OD2 ASP B 130                ZN    ZN B 401     1555   1555  2.41  
SITE     1 AC1  4 TRP A   1  HIS A  11  ASP A 130   ZN A 401                    
SITE     1 AC2  5 ASP A  56  HIS A  68  HIS A 126  ASP A 130                    
SITE     2 AC2  5  ZN A 400                                                     
SITE     1 AC3  4 TRP B   1  HIS B  11  ASP B 130   ZN B 401                    
SITE     1 AC4  5 ASP B  56  HIS B  68  HIS B 126  ASP B 130                    
SITE     2 AC4  5  ZN B 400                                                     
CRYST1  149.540  149.540  193.830  90.00  90.00 120.00 H 3 2        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      0.006687  0.003861  0.000000        0.00000                         
SCALE2      0.000000  0.007722  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.005159        0.00000                         
MTRIX1   1  0.998650 -0.051890 -0.002060        4.72312    1                    
MTRIX2   1 -0.051890 -0.998650  0.001440      172.49170    1                    
MTRIX3   1 -0.002130 -0.001330 -1.000000      161.60902    1