HEADER    TOXIN                                   31-JAN-00   1EEF              
TITLE     HEAT-LABILE ENTEROTOXIN B-PENTAMER COMPLEXED WITH BOUND LIGAND PEPG   
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: PROTEIN (HEAT-LABILE ENTEROTOXIN B CHAIN);                 
COMPND   3 CHAIN: D, E, F, G, H, L, M, N, O, P;                                 
COMPND   4 SYNONYM: LT-I;                                                       
COMPND   5 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI;                               
SOURCE   3 ORGANISM_TAXID: 562;                                                 
SOURCE   4 STRAIN: PORCINE;                                                     
SOURCE   5 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   6 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   7 EXPRESSION_SYSTEM_STRAIN: MC1061;                                    
SOURCE   8 EXPRESSION_SYSTEM_VECTOR: PROFIT                                     
KEYWDS    ENTEROTOXIN, TOXIN                                                    
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    E.A.MERRITT,W.G.J.HOL                                                 
REVDAT   8   16-OCT-24 1EEF    1       REMARK                                   
REVDAT   7   03-APR-24 1EEF    1       HETSYN                                   
REVDAT   6   29-JUL-20 1EEF    1       COMPND REMARK HETNAM LINK                
REVDAT   6 2                   1       SITE                                     
REVDAT   5   24-FEB-09 1EEF    1       VERSN                                    
REVDAT   4   01-APR-03 1EEF    1       JRNL                                     
REVDAT   3   07-FEB-01 1EEF    1       JRNL                                     
REVDAT   2   25-OCT-00 1EEF    1       REMARK HETSYN                            
REVDAT   1   16-FEB-00 1EEF    0                                                
JRNL        AUTH   E.FAN,E.A.MERRITT,Z.ZHANG,J.C.PICKENS,C.ROACH,M.AHN,W.G.HOL  
JRNL        TITL   EXPLORATION OF THE GM1 RECEPTOR-BINDING SITE OF HEAT-LABILE  
JRNL        TITL 2 ENTEROTOXIN AND CHOLERA TOXIN BY PHENYL-RING-CONTAINING      
JRNL        TITL 3 GALACTOSE DERIVATIVES.                                       
JRNL        REF    ACTA CRYSTALLOGR.,SECT.D      V.  57   201 2001              
JRNL        REFN                   ISSN 0907-4449                               
JRNL        PMID   11173465                                                     
JRNL        DOI    10.1107/S0907444900016814                                    
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   E.A.MERRITT,S.SARFATY,I.K.FEIL,W.G.HOL                       
REMARK   1  TITL   STRUCTURAL FOUNDATION FOR THE DESIGN OF RECEPTOR ANTAGONISTS 
REMARK   1  TITL 2 TARGETING ESCHERICHIA HEAT-LABILE ENTEROTOXIN                
REMARK   1  REF    STRUCTURE                     V.   5  1485 1997              
REMARK   1  REFN                   ISSN 0969-2126                               
REMARK   1  DOI    10.1016/S0969-2126(97)00298-0                                
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.80 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : X-PLOR 3.851                                         
REMARK   3   AUTHORS     : BRUNGER                                              
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.80                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 22.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 1.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : NULL                           
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 99.6                           
REMARK   3   NUMBER OF REFLECTIONS             : 96986                          
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) : 0.182                           
REMARK   3   FREE R VALUE                     : 0.267                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 4889                            
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           : 20                           
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 1.82                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.84                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 99.90                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 3591                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2300                       
REMARK   3   BIN FREE R VALUE                    : 0.2130                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 177                          
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            : 8240                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 200                                     
REMARK   3   SOLVENT ATOMS            : 1083                                    
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 16.00                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 3.52880                                              
REMARK   3    B22 (A**2) : -1.21800                                             
REMARK   3    B33 (A**2) : -2.31080                                             
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : -0.00870                                             
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : NULL                            
REMARK   3   ESD FROM SIGMAA              (A) : NULL                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : NULL                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : NULL                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : NULL                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.013                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.568                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 23.70                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 1.470                           
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : NULL                                      
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : 2.300 ; 2.000                
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : 3.600 ; 4.000                
REMARK   3   SIDE-CHAIN BOND              (A**2) : 2.300 ; 2.000                
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : 3.600 ; 4.000                
REMARK   3                                                                      
REMARK   3  NCS MODEL : NULL                                                    
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS.                         RMS   SIGMA/WEIGHT          
REMARK   3   GROUP  1  POSITIONAL            (A) : NULL  ; NULL                 
REMARK   3   GROUP  1  B-FACTOR           (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  PARAMETER FILE  1  : PARHCSDX.PRO                                   
REMARK   3  PARAMETER FILE  2  : PARAM1.CHO                                     
REMARK   3  PARAMETER FILE  3  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : TOPHCSDX.PRO                                   
REMARK   3  TOPOLOGY FILE  2   : LOCALLY MODIFIED TOPH1.CHO                     
REMARK   3  TOPOLOGY FILE  3   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1EEF COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 02-FEB-00.                  
REMARK 100 THE DEPOSITION ID IS D_1000010492.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 20-MAR-98                          
REMARK 200  TEMPERATURE           (KELVIN) : 100.0                              
REMARK 200  PH                             : 7.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : N                                  
REMARK 200  RADIATION SOURCE               : ROTATING ANODE                     
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : ENRAF-NONIUS FR591                 
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.5418                             
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : DOUBLY-FOCUSED MIRRORS             
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : MACSCIENCE                         
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 97336                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.800                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 22.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 94.0                               
REMARK 200  DATA REDUNDANCY                : 4.350                              
REMARK 200  R MERGE                    (I) : 0.05100                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 28.4000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.82                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.84                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 99.4                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 4.00                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.11500                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: AMORE                                                 
REMARK 200 STARTING MODEL: UNPUBLISHED LTB B-PENTAMER STRUCTURE                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 45.16                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.20                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PH 7.5                                   
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 21 1                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,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       32.51000            
REMARK 290   SMTRY3   2  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1, 2                                                    
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: PENTAMERIC                        
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: PENTAMERIC                 
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 15640 ANGSTROM**2                         
REMARK 350 SURFACE AREA OF THE COMPLEX: 20220 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -53.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: D, E, F, G, H                         
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: PENTAMERIC                        
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: PENTAMERIC                 
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 15750 ANGSTROM**2                         
REMARK 350 SURFACE AREA OF THE COMPLEX: 20390 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -48.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: L, M, N, O, P                         
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: COVALENT BOND LENGTHS                                      
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3)               
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   RES CSSEQI ATM2   DEVIATION                     
REMARK 500    MET D  68   CG    MET D  68   SD     -0.246                       
REMARK 500    MET E  68   CG    MET E  68   SD      0.184                       
REMARK 500    MET G  68   CG    MET G  68   SD     -0.196                       
REMARK 500    MET N  68   CG    MET N  68   SD      0.183                       
REMARK 500    MET O  68   CG    MET O  68   SD      0.316                       
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    VAL E  50   N   -  CA  -  C   ANGL. DEV. = -16.4 DEGREES          
REMARK 500    VAL H  50   N   -  CA  -  C   ANGL. DEV. = -16.5 DEGREES          
REMARK 500    ILE H  99   CB  -  CA  -  C   ANGL. DEV. = -12.6 DEGREES          
REMARK 500    VAL P  50   N   -  CA  -  C   ANGL. DEV. = -17.1 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    ASP D  83      -77.75    -84.43                                   
REMARK 500    ASP E  83      -71.48    -85.78                                   
REMARK 500    ASP F  83      -71.25    -83.73                                   
REMARK 500    ASP G  83      -75.88    -84.60                                   
REMARK 500    ILE H  20      -60.96    -97.31                                   
REMARK 500    ASP H  83      -70.53    -91.28                                   
REMARK 500    LYS L  34       -5.18     72.51                                   
REMARK 500    ASP L  83      -75.78    -87.65                                   
REMARK 500    ASP M  83      -75.52    -86.09                                   
REMARK 500    LYS M 102      -35.17   -140.55                                   
REMARK 500    ASP N  83      -74.61    -85.17                                   
REMARK 500    ASP O  83      -78.45    -83.16                                   
REMARK 500    ASP P  83      -76.82    -84.90                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1LTS   RELATED DB: PDB                                   
REMARK 900 E COLI HEAT-LABILE ENTEROTOXIN AB5 HOLOTOXIN                         
REMARK 900 RELATED ID: 1EEI   RELATED DB: PDB                                   
REMARK 900 CHOLERA TOXIN B-PENTAMER COMPLEXED WITH METANITROPHENYL-ALPHA-D-     
REMARK 900 GALACTOSE                                                            
DBREF  1EEF D    1   103  UNP    P32890   ELBP_ECOLI      22    124             
DBREF  1EEF E    1   103  UNP    P32890   ELBP_ECOLI      22    124             
DBREF  1EEF F    1   103  UNP    P32890   ELBP_ECOLI      22    124             
DBREF  1EEF G    1   103  UNP    P32890   ELBP_ECOLI      22    124             
DBREF  1EEF H    1   103  UNP    P32890   ELBP_ECOLI      22    124             
DBREF  1EEF L    1   103  UNP    P32890   ELBP_ECOLI      22    124             
DBREF  1EEF M    1   103  UNP    P32890   ELBP_ECOLI      22    124             
DBREF  1EEF N    1   103  UNP    P32890   ELBP_ECOLI      22    124             
DBREF  1EEF O    1   103  UNP    P32890   ELBP_ECOLI      22    124             
DBREF  1EEF P    1   103  UNP    P32890   ELBP_ECOLI      22    124             
SEQRES   1 D  103  ALA PRO GLN THR ILE THR GLU LEU CYS SER GLU TYR ARG          
SEQRES   2 D  103  ASN THR GLN ILE TYR THR ILE ASN ASP LYS ILE LEU SER          
SEQRES   3 D  103  TYR THR GLU SER MET ALA GLY LYS ARG GLU MET VAL ILE          
SEQRES   4 D  103  ILE THR PHE LYS SER GLY GLU THR PHE GLN VAL GLU VAL          
SEQRES   5 D  103  PRO GLY SER GLN HIS ILE ASP SER GLN LYS LYS ALA ILE          
SEQRES   6 D  103  GLU ARG MET LYS ASP THR LEU ARG ILE THR TYR LEU THR          
SEQRES   7 D  103  GLU THR LYS ILE ASP LYS LEU CYS VAL TRP ASN ASN LYS          
SEQRES   8 D  103  THR PRO ASN SER ILE ALA ALA ILE SER MET LYS ASN              
SEQRES   1 E  103  ALA PRO GLN THR ILE THR GLU LEU CYS SER GLU TYR ARG          
SEQRES   2 E  103  ASN THR GLN ILE TYR THR ILE ASN ASP LYS ILE LEU SER          
SEQRES   3 E  103  TYR THR GLU SER MET ALA GLY LYS ARG GLU MET VAL ILE          
SEQRES   4 E  103  ILE THR PHE LYS SER GLY GLU THR PHE GLN VAL GLU VAL          
SEQRES   5 E  103  PRO GLY SER GLN HIS ILE ASP SER GLN LYS LYS ALA ILE          
SEQRES   6 E  103  GLU ARG MET LYS ASP THR LEU ARG ILE THR TYR LEU THR          
SEQRES   7 E  103  GLU THR LYS ILE ASP LYS LEU CYS VAL TRP ASN ASN LYS          
SEQRES   8 E  103  THR PRO ASN SER ILE ALA ALA ILE SER MET LYS ASN              
SEQRES   1 F  103  ALA PRO GLN THR ILE THR GLU LEU CYS SER GLU TYR ARG          
SEQRES   2 F  103  ASN THR GLN ILE TYR THR ILE ASN ASP LYS ILE LEU SER          
SEQRES   3 F  103  TYR THR GLU SER MET ALA GLY LYS ARG GLU MET VAL ILE          
SEQRES   4 F  103  ILE THR PHE LYS SER GLY GLU THR PHE GLN VAL GLU VAL          
SEQRES   5 F  103  PRO GLY SER GLN HIS ILE ASP SER GLN LYS LYS ALA ILE          
SEQRES   6 F  103  GLU ARG MET LYS ASP THR LEU ARG ILE THR TYR LEU THR          
SEQRES   7 F  103  GLU THR LYS ILE ASP LYS LEU CYS VAL TRP ASN ASN LYS          
SEQRES   8 F  103  THR PRO ASN SER ILE ALA ALA ILE SER MET LYS ASN              
SEQRES   1 G  103  ALA PRO GLN THR ILE THR GLU LEU CYS SER GLU TYR ARG          
SEQRES   2 G  103  ASN THR GLN ILE TYR THR ILE ASN ASP LYS ILE LEU SER          
SEQRES   3 G  103  TYR THR GLU SER MET ALA GLY LYS ARG GLU MET VAL ILE          
SEQRES   4 G  103  ILE THR PHE LYS SER GLY GLU THR PHE GLN VAL GLU VAL          
SEQRES   5 G  103  PRO GLY SER GLN HIS ILE ASP SER GLN LYS LYS ALA ILE          
SEQRES   6 G  103  GLU ARG MET LYS ASP THR LEU ARG ILE THR TYR LEU THR          
SEQRES   7 G  103  GLU THR LYS ILE ASP LYS LEU CYS VAL TRP ASN ASN LYS          
SEQRES   8 G  103  THR PRO ASN SER ILE ALA ALA ILE SER MET LYS ASN              
SEQRES   1 H  103  ALA PRO GLN THR ILE THR GLU LEU CYS SER GLU TYR ARG          
SEQRES   2 H  103  ASN THR GLN ILE TYR THR ILE ASN ASP LYS ILE LEU SER          
SEQRES   3 H  103  TYR THR GLU SER MET ALA GLY LYS ARG GLU MET VAL ILE          
SEQRES   4 H  103  ILE THR PHE LYS SER GLY GLU THR PHE GLN VAL GLU VAL          
SEQRES   5 H  103  PRO GLY SER GLN HIS ILE ASP SER GLN LYS LYS ALA ILE          
SEQRES   6 H  103  GLU ARG MET LYS ASP THR LEU ARG ILE THR TYR LEU THR          
SEQRES   7 H  103  GLU THR LYS ILE ASP LYS LEU CYS VAL TRP ASN ASN LYS          
SEQRES   8 H  103  THR PRO ASN SER ILE ALA ALA ILE SER MET LYS ASN              
SEQRES   1 L  103  ALA PRO GLN THR ILE THR GLU LEU CYS SER GLU TYR ARG          
SEQRES   2 L  103  ASN THR GLN ILE TYR THR ILE ASN ASP LYS ILE LEU SER          
SEQRES   3 L  103  TYR THR GLU SER MET ALA GLY LYS ARG GLU MET VAL ILE          
SEQRES   4 L  103  ILE THR PHE LYS SER GLY GLU THR PHE GLN VAL GLU VAL          
SEQRES   5 L  103  PRO GLY SER GLN HIS ILE ASP SER GLN LYS LYS ALA ILE          
SEQRES   6 L  103  GLU ARG MET LYS ASP THR LEU ARG ILE THR TYR LEU THR          
SEQRES   7 L  103  GLU THR LYS ILE ASP LYS LEU CYS VAL TRP ASN ASN LYS          
SEQRES   8 L  103  THR PRO ASN SER ILE ALA ALA ILE SER MET LYS ASN              
SEQRES   1 M  103  ALA PRO GLN THR ILE THR GLU LEU CYS SER GLU TYR ARG          
SEQRES   2 M  103  ASN THR GLN ILE TYR THR ILE ASN ASP LYS ILE LEU SER          
SEQRES   3 M  103  TYR THR GLU SER MET ALA GLY LYS ARG GLU MET VAL ILE          
SEQRES   4 M  103  ILE THR PHE LYS SER GLY GLU THR PHE GLN VAL GLU VAL          
SEQRES   5 M  103  PRO GLY SER GLN HIS ILE ASP SER GLN LYS LYS ALA ILE          
SEQRES   6 M  103  GLU ARG MET LYS ASP THR LEU ARG ILE THR TYR LEU THR          
SEQRES   7 M  103  GLU THR LYS ILE ASP LYS LEU CYS VAL TRP ASN ASN LYS          
SEQRES   8 M  103  THR PRO ASN SER ILE ALA ALA ILE SER MET LYS ASN              
SEQRES   1 N  103  ALA PRO GLN THR ILE THR GLU LEU CYS SER GLU TYR ARG          
SEQRES   2 N  103  ASN THR GLN ILE TYR THR ILE ASN ASP LYS ILE LEU SER          
SEQRES   3 N  103  TYR THR GLU SER MET ALA GLY LYS ARG GLU MET VAL ILE          
SEQRES   4 N  103  ILE THR PHE LYS SER GLY GLU THR PHE GLN VAL GLU VAL          
SEQRES   5 N  103  PRO GLY SER GLN HIS ILE ASP SER GLN LYS LYS ALA ILE          
SEQRES   6 N  103  GLU ARG MET LYS ASP THR LEU ARG ILE THR TYR LEU THR          
SEQRES   7 N  103  GLU THR LYS ILE ASP LYS LEU CYS VAL TRP ASN ASN LYS          
SEQRES   8 N  103  THR PRO ASN SER ILE ALA ALA ILE SER MET LYS ASN              
SEQRES   1 O  103  ALA PRO GLN THR ILE THR GLU LEU CYS SER GLU TYR ARG          
SEQRES   2 O  103  ASN THR GLN ILE TYR THR ILE ASN ASP LYS ILE LEU SER          
SEQRES   3 O  103  TYR THR GLU SER MET ALA GLY LYS ARG GLU MET VAL ILE          
SEQRES   4 O  103  ILE THR PHE LYS SER GLY GLU THR PHE GLN VAL GLU VAL          
SEQRES   5 O  103  PRO GLY SER GLN HIS ILE ASP SER GLN LYS LYS ALA ILE          
SEQRES   6 O  103  GLU ARG MET LYS ASP THR LEU ARG ILE THR TYR LEU THR          
SEQRES   7 O  103  GLU THR LYS ILE ASP LYS LEU CYS VAL TRP ASN ASN LYS          
SEQRES   8 O  103  THR PRO ASN SER ILE ALA ALA ILE SER MET LYS ASN              
SEQRES   1 P  103  ALA PRO GLN THR ILE THR GLU LEU CYS SER GLU TYR ARG          
SEQRES   2 P  103  ASN THR GLN ILE TYR THR ILE ASN ASP LYS ILE LEU SER          
SEQRES   3 P  103  TYR THR GLU SER MET ALA GLY LYS ARG GLU MET VAL ILE          
SEQRES   4 P  103  ILE THR PHE LYS SER GLY GLU THR PHE GLN VAL GLU VAL          
SEQRES   5 P  103  PRO GLY SER GLN HIS ILE ASP SER GLN LYS LYS ALA ILE          
SEQRES   6 P  103  GLU ARG MET LYS ASP THR LEU ARG ILE THR TYR LEU THR          
SEQRES   7 P  103  GLU THR LYS ILE ASP LYS LEU CYS VAL TRP ASN ASN LYS          
SEQRES   8 P  103  THR PRO ASN SER ILE ALA ALA ILE SER MET LYS ASN              
HET    GLA  D 104      12                                                       
HET    GLA  E 105      12                                                       
HET    GLA  F 106      12                                                       
HET    GLA  G 107      12                                                       
HET    I06  G 108      20                                                       
HET    GLA  H 109      12                                                       
HET    I06  H 110      20                                                       
HET    GLA  L 111      12                                                       
HET    GLA  M 112      12                                                       
HET    GLA  N 113      12                                                       
HET    GLA  O 114      12                                                       
HET    I06  O 115      20                                                       
HET    GLA  P 116      12                                                       
HET    I06  P 117      20                                                       
HETNAM     GLA ALPHA-D-GALACTOPYRANOSE                                          
HETNAM     I06 2-PHENETHYL-2,3-DIHYDRO-PHTHALAZINE-1,4-DIONE                    
HETSYN     GLA ALPHA-D-GALACTOSE; D-GALACTOSE; GALACTOSE; ALPHA D-              
HETSYN   2 GLA  GALACTOSE                                                       
FORMUL  11  GLA    10(C6 H12 O6)                                                
FORMUL  15  I06    4(C16 H14 N2 O2)                                             
FORMUL  25  HOH   *1083(H2 O)                                                   
HELIX    1   1 THR D    4  SER D   10  1                                   7    
HELIX    2   2 SER D   60  THR D   78  1                                  19    
HELIX    3   3 THR E    4  SER E   10  1                                   7    
HELIX    4   4 SER E   60  GLU E   79  1                                  20    
HELIX    5   5 THR F    4  SER F   10  1                                   7    
HELIX    6   6 SER F   60  GLU F   79  1                                  20    
HELIX    7   7 THR G    4  SER G   10  1                                   7    
HELIX    8   8 ILE G   58  GLU G   79  1                                  22    
HELIX    9   9 THR H    4  SER H   10  1                                   7    
HELIX   10  10 ILE H   58  GLU H   79  1                                  22    
HELIX   11  11 THR L    4  SER L   10  1                                   7    
HELIX   12  12 SER L   60  GLU L   79  1                                  20    
HELIX   13  13 THR M    4  SER M   10  1                                   7    
HELIX   14  14 SER M   60  GLU M   79  1                                  20    
HELIX   15  15 THR N    4  GLU N   11  1                                   8    
HELIX   16  16 SER N   60  THR N   78  1                                  19    
HELIX   17  17 THR O    4  SER O   10  1                                   7    
HELIX   18  18 ILE O   58  GLU O   79  1                                  22    
HELIX   19  19 THR P    4  SER P   10  1                                   7    
HELIX   20  20 ILE P   58  GLU P   79  1                                  22    
SHEET    1   A39 THR D  15  ASP D  22  0                                        
SHEET    2   A39 ILE D  82  TRP D  88 -1  N  ILE D  82   O  ASP D  22           
SHEET    3   A39 ASN D  94  LYS D 102 -1  O  SER D  95   N  TRP D  88           
SHEET    4   A39 SER E  26  SER E  30 -1  O  TYR E  27   N  MET D 101           
SHEET    5   A39 MET E  37  THR E  41 -1  O  MET E  37   N  SER E  30           
SHEET    6   A39 THR E  47  VAL E  50 -1  N  PHE E  48   O  ILE E  40           
SHEET    7   A39 ASN E  94  MET E 101  1  O  ASN E  94   N  GLN E  49           
SHEET    8   A39 ILE E  82  TRP E  88 -1  N  ASP E  83   O  SER E 100           
SHEET    9   A39 THR E  15  ASP E  22 -1  O  GLN E  16   N  VAL E  87           
SHEET   10   A39 ILE E  82  TRP E  88 -1  N  ILE E  82   O  ASP E  22           
SHEET   11   A39 ASN E  94  MET E 101 -1  O  SER E  95   N  TRP E  88           
SHEET   12   A39 SER F  26  SER F  30 -1  O  TYR F  27   N  MET E 101           
SHEET   13   A39 MET F  37  THR F  41 -1  O  MET F  37   N  SER F  30           
SHEET   14   A39 THR F  47  VAL F  50 -1  N  PHE F  48   O  ILE F  40           
SHEET   15   A39 ASN F  94  LYS F 102  1  O  ASN F  94   N  GLN F  49           
SHEET   16   A39 LYS F  81  TRP F  88 -1  N  ASP F  83   O  SER F 100           
SHEET   17   A39 THR F  15  LYS F  23 -1  O  GLN F  16   N  VAL F  87           
SHEET   18   A39 LYS F  81  TRP F  88 -1  N  ILE F  82   O  ASP F  22           
SHEET   19   A39 ASN F  94  LYS F 102 -1  O  SER F  95   N  TRP F  88           
SHEET   20   A39 SER G  26  SER G  30  1  N  TYR G  27   O  MET F 101           
SHEET   21   A39 MET G  37  THR G  41 -1  O  MET G  37   N  SER G  30           
SHEET   22   A39 THR G  47  VAL G  50 -1  O  PHE G  48   N  ILE G  40           
SHEET   23   A39 ASN G  94  LYS G 102  1  O  ASN G  94   N  GLN G  49           
SHEET   24   A39 ILE G  82  TRP G  88 -1  N  ASP G  83   O  SER G 100           
SHEET   25   A39 THR G  15  ASP G  22 -1  O  GLN G  16   N  VAL G  87           
SHEET   26   A39 ILE G  82  TRP G  88 -1  N  ILE G  82   O  ASP G  22           
SHEET   27   A39 ASN G  94  LYS G 102 -1  O  SER G  95   N  TRP G  88           
SHEET   28   A39 SER H  26  SER H  30 -1  N  TYR H  27   O  MET G 101           
SHEET   29   A39 MET H  37  THR H  41 -1  O  MET H  37   N  SER H  30           
SHEET   30   A39 THR H  47  VAL H  50 -1  N  PHE H  48   O  ILE H  40           
SHEET   31   A39 ASN H  94  LYS H 102  1  O  ASN H  94   N  GLN H  49           
SHEET   32   A39 ILE H  82  TRP H  88 -1  N  ASP H  83   O  SER H 100           
SHEET   33   A39 THR H  15  ASP H  22 -1  O  GLN H  16   N  VAL H  87           
SHEET   34   A39 ILE H  82  TRP H  88 -1  N  ILE H  82   O  ASP H  22           
SHEET   35   A39 ASN H  94  LYS H 102 -1  O  SER H  95   N  TRP H  88           
SHEET   36   A39 SER D  26  SER D  30 -1  N  TYR D  27   O  MET H 101           
SHEET   37   A39 MET D  37  THR D  41 -1  O  MET D  37   N  SER D  30           
SHEET   38   A39 THR D  47  VAL D  50 -1  N  PHE D  48   O  ILE D  40           
SHEET   39   A39 ASN D  94  LYS D 102  1  O  ASN D  94   N  GLN D  49           
SHEET    1   B39 THR L  15  ASP L  22  0                                        
SHEET    2   B39 ILE L  82  TRP L  88 -1  N  ILE L  82   O  ASP L  22           
SHEET    3   B39 ASN L  94  LYS L 102 -1  O  SER L  95   N  TRP L  88           
SHEET    4   B39 SER M  26  SER M  30  1  N  TYR M  27   O  MET L 101           
SHEET    5   B39 MET M  37  THR M  41 -1  O  MET M  37   N  SER M  30           
SHEET    6   B39 THR M  47  VAL M  50 -1  O  PHE M  48   N  ILE M  40           
SHEET    7   B39 ASN M  94  MET M 101  1  O  ASN M  94   N  GLN M  49           
SHEET    8   B39 ILE M  82  TRP M  88 -1  N  ASP M  83   O  SER M 100           
SHEET    9   B39 THR M  15  ASP M  22 -1  O  GLN M  16   N  VAL M  87           
SHEET   10   B39 ILE M  82  TRP M  88 -1  N  ILE M  82   O  ASP M  22           
SHEET   11   B39 ASN M  94  MET M 101 -1  O  SER M  95   N  TRP M  88           
SHEET   12   B39 SER N  26  SER N  30 -1  N  TYR N  27   O  MET M 101           
SHEET   13   B39 MET N  37  THR N  41 -1  O  MET N  37   N  SER N  30           
SHEET   14   B39 THR N  47  VAL N  50 -1  N  PHE N  48   O  ILE N  40           
SHEET   15   B39 ASN N  94  LYS N 102  1  O  ASN N  94   N  GLN N  49           
SHEET   16   B39 ILE N  82  TRP N  88 -1  N  ASP N  83   O  SER N 100           
SHEET   17   B39 THR N  15  ASP N  22 -1  O  GLN N  16   N  VAL N  87           
SHEET   18   B39 ILE N  82  TRP N  88 -1  N  ILE N  82   O  ASP N  22           
SHEET   19   B39 ASN N  94  LYS N 102 -1  O  SER N  95   N  TRP N  88           
SHEET   20   B39 SER O  26  SER O  30 -1  N  TYR O  27   O  MET N 101           
SHEET   21   B39 MET O  37  THR O  41 -1  O  MET O  37   N  SER O  30           
SHEET   22   B39 THR O  47  VAL O  50 -1  N  PHE O  48   O  ILE O  40           
SHEET   23   B39 ASN O  94  LYS O 102  1  O  ASN O  94   N  GLN O  49           
SHEET   24   B39 ILE O  82  TRP O  88 -1  N  ASP O  83   O  SER O 100           
SHEET   25   B39 THR O  15  ASP O  22 -1  O  GLN O  16   N  VAL O  87           
SHEET   26   B39 ILE O  82  TRP O  88 -1  N  ILE O  82   O  ASP O  22           
SHEET   27   B39 ASN O  94  LYS O 102 -1  O  SER O  95   N  TRP O  88           
SHEET   28   B39 SER P  26  SER P  30 -1  O  TYR P  27   N  MET O 101           
SHEET   29   B39 MET P  37  THR P  41 -1  O  MET P  37   N  SER P  30           
SHEET   30   B39 THR P  47  VAL P  50 -1  N  PHE P  48   O  ILE P  40           
SHEET   31   B39 ASN P  94  LYS P 102  1  O  ASN P  94   N  GLN P  49           
SHEET   32   B39 ILE P  82  TRP P  88 -1  N  ASP P  83   O  SER P 100           
SHEET   33   B39 THR P  15  ASP P  22 -1  O  GLN P  16   N  VAL P  87           
SHEET   34   B39 ILE P  82  TRP P  88 -1  N  ILE P  82   O  ASP P  22           
SHEET   35   B39 ASN P  94  LYS P 102 -1  O  SER P  95   N  TRP P  88           
SHEET   36   B39 SER L  26  SER L  30 -1  N  TYR L  27   O  MET P 101           
SHEET   37   B39 MET L  37  THR L  41 -1  O  MET L  37   N  SER L  30           
SHEET   38   B39 THR L  47  VAL L  50 -1  O  PHE L  48   N  ILE L  40           
SHEET   39   B39 ASN L  94  LYS L 102  1  O  ASN L  94   N  GLN L  49           
SSBOND   1 CYS D    9    CYS D   86                          1555   1555  2.05  
SSBOND   2 CYS E    9    CYS E   86                          1555   1555  2.05  
SSBOND   3 CYS F    9    CYS F   86                          1555   1555  2.03  
SSBOND   4 CYS G    9    CYS G   86                          1555   1555  2.04  
SSBOND   5 CYS H    9    CYS H   86                          1555   1555  2.03  
SSBOND   6 CYS L    9    CYS L   86                          1555   1555  2.03  
SSBOND   7 CYS M    9    CYS M   86                          1555   1555  2.04  
SSBOND   8 CYS N    9    CYS N   86                          1555   1555  2.04  
SSBOND   9 CYS O    9    CYS O   86                          1555   1555  2.04  
SSBOND  10 CYS P    9    CYS P   86                          1555   1555  2.04  
LINK         O1  GLA G 107                 C7  I06 G 108     1555   1555  1.37  
LINK         O1  GLA H 109                 C7  I06 H 110     1555   1555  1.34  
LINK         O1  GLA O 114                 C7  I06 O 115     1555   1555  1.35  
LINK         O1  GLA P 116                 C7  I06 P 117     1555   1555  1.34  
CISPEP   1 THR D   92    PRO D   93          0        -0.09                     
CISPEP   2 THR E   92    PRO E   93          0        -3.16                     
CISPEP   3 THR F   92    PRO F   93          0         0.68                     
CISPEP   4 THR G   92    PRO G   93          0        -0.39                     
CISPEP   5 THR H   92    PRO H   93          0        -0.42                     
CISPEP   6 THR L   92    PRO L   93          0        -0.16                     
CISPEP   7 THR M   92    PRO M   93          0        -0.44                     
CISPEP   8 THR N   92    PRO N   93          0        -0.14                     
CISPEP   9 THR O   92    PRO O   93          0        -0.19                     
CISPEP  10 THR P   92    PRO P   93          0         2.17                     
CRYST1   88.540   65.020  101.930  90.00 115.47  90.00 P 1 21 1     20          
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      0.011290  0.000000  0.005380        0.00000                         
SCALE2      0.000000  0.015380  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.010870        0.00000