HEADER    ENTEROTOXIN                             15-SEP-93   1LTA              
TITLE     2.2 ANGSTROMS CRYSTAL STRUCTURE OF E. COLI HEAT-LABILE ENTEROTOXIN    
TITLE    2 (LT) WITH BOUND GALACTOSE                                            
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: HEAT-LABILE ENTEROTOXIN, SUBUNIT B;                        
COMPND   3 CHAIN: D, E, F, G, H;                                                
COMPND   4 ENGINEERED: YES;                                                     
COMPND   5 MOL_ID: 2;                                                           
COMPND   6 MOLECULE: HEAT-LABILE ENTEROTOXIN, SUBUNIT A;                        
COMPND   7 CHAIN: A;                                                            
COMPND   8 ENGINEERED: YES;                                                     
COMPND   9 MOL_ID: 3;                                                           
COMPND  10 MOLECULE: HEAT-LABILE ENTEROTOXIN, SUBUNIT A;                        
COMPND  11 CHAIN: C;                                                            
COMPND  12 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI;                               
SOURCE   3 ORGANISM_TAXID: 562;                                                 
SOURCE   4 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   5 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   6 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE   7 EXPRESSION_SYSTEM_PLASMID: EWD299;                                   
SOURCE   8 MOL_ID: 2;                                                           
SOURCE   9 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI;                               
SOURCE  10 ORGANISM_TAXID: 562;                                                 
SOURCE  11 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE  12 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE  13 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  14 EXPRESSION_SYSTEM_PLASMID: EWD299;                                   
SOURCE  15 MOL_ID: 3;                                                           
SOURCE  16 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI;                               
SOURCE  17 ORGANISM_TAXID: 562;                                                 
SOURCE  18 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE  19 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE  20 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  21 EXPRESSION_SYSTEM_PLASMID: EWD299                                    
KEYWDS    ENTEROTOXIN                                                           
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    E.A.MERRITT,T.K.SIXMA,K.H.KALK,B.A.M.VAN ZANTEN,W.G.J.HOL             
REVDAT   4   06-NOV-24 1LTA    1       HETSYN                                   
REVDAT   3   29-JUL-20 1LTA    1       COMPND REMARK HETNAM SITE                
REVDAT   2   24-FEB-09 1LTA    1       VERSN                                    
REVDAT   1   31-JAN-94 1LTA    0                                                
JRNL        AUTH   E.A.MERRITT,T.K.SIXMA,K.H.KALK,B.A.VAN ZANTEN,W.G.HOL        
JRNL        TITL   GALACTOSE-BINDING SITE IN ESCHERICHIA COLI HEAT-LABILE       
JRNL        TITL 2 ENTEROTOXIN (LT) AND CHOLERA TOXIN (CT).                     
JRNL        REF    MOL.MICROBIOL.                V.  13   745 1994              
JRNL        REFN                   ISSN 0950-382X                               
JRNL        PMID   7997185                                                      
JRNL        DOI    10.1111/J.1365-2958.1994.TB00467.X                           
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   T.K.SIXMA,K.H.KALK,B.A.M.VAN ZANTEN,Z.DAUTER,J.KINGMA,       
REMARK   1  AUTH 2 B.WITHOLT,W.G.J.HOL                                          
REMARK   1  TITL   REFINED STRUCTURE OF ESCHERICHIA COLI HEAT-LABILE            
REMARK   1  TITL 2 ENTEROTOXIN, A CLOSE RELATIVE OF CHOLERA TOXIN               
REMARK   1  REF    J.MOL.BIOL.                   V. 230   890 1993              
REMARK   1  REFN                   ISSN 0022-2836                               
REMARK   1 REFERENCE 2                                                          
REMARK   1  AUTH   T.K.SIXMA,S.E.PRONK,K.H.KALK,B.A.M.VAN ZANTEN,A.M.BERGHUIS,  
REMARK   1  AUTH 2 W.G.J.HOL                                                    
REMARK   1  TITL   LACTOSE BINDING TO HEAT-LABILE ENTEROTOXIN REVEALED BY X-RAY 
REMARK   1  TITL 2 CRYSTALLOGRAPHY                                              
REMARK   1  REF    NATURE                        V. 355   561 1992              
REMARK   1  REFN                   ISSN 0028-0836                               
REMARK   1 REFERENCE 3                                                          
REMARK   1  AUTH   T.K.SIXMA,S.E.PRONK,K.H.KALK,E.S.WARTNA,B.A.M.VAN ZANTEN,    
REMARK   1  AUTH 2 B.WITHOLT,W.G.J.HOL                                          
REMARK   1  TITL   CRYSTAL STRUCTURE OF A CHOLERA TOXIN-RELATED HEAT-LABILE     
REMARK   1  TITL 2 ENTEROTOXIN FROM E. COLI                                     
REMARK   1  REF    NATURE                        V. 351   371 1991              
REMARK   1  REFN                   ISSN 0028-0836                               
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.20 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : X-PLOR                                               
REMARK   3   AUTHORS     : BRUNGER                                              
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.20                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : NULL                           
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : NULL                           
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : NULL                           
REMARK   3   NUMBER OF REFLECTIONS             : NULL                           
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : NULL                            
REMARK   3   FREE R VALUE TEST SET SELECTION  : NULL                            
REMARK   3   R VALUE            (WORKING SET) : 0.175                           
REMARK   3   FREE R VALUE                     : NULL                            
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : NULL                            
REMARK   3   FREE R VALUE TEST SET COUNT      : NULL                            
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           : NULL                         
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : NULL                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : NULL                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : NULL                         
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : NULL                         
REMARK   3   BIN R VALUE           (WORKING SET) : NULL                         
REMARK   3   BIN FREE R VALUE                    : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : NULL                         
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            : 6035                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 60                                      
REMARK   3   SOLVENT ATOMS            : 295                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : NULL                           
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : NULL                                                 
REMARK   3    B22 (A**2) : NULL                                                 
REMARK   3    B33 (A**2) : NULL                                                 
REMARK   3    B12 (A**2) : NULL                                                 
REMARK   3    B13 (A**2) : NULL                                                 
REMARK   3    B23 (A**2) : NULL                                                 
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) : 0.015                           
REMARK   3   BOND ANGLES            (DEGREES) : 3.020                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : NULL                            
REMARK   3   IMPROPER ANGLES        (DEGREES) : NULL                            
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : NULL                                      
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  NCS MODEL : NULL                                                    
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS.                         RMS   SIGMA/WEIGHT          
REMARK   3   GROUP  1  POSITIONAL            (A) : NULL  ; NULL                 
REMARK   3   GROUP  1  B-FACTOR           (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  PARAMETER FILE  1  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1LTA COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL.                                
REMARK 100 THE DEPOSITION ID IS D_1000174827.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : NULL                               
REMARK 200  TEMPERATURE           (KELVIN) : NULL                               
REMARK 200  PH                             : NULL                               
REMARK 200  NUMBER OF CRYSTALS USED        : NULL                               
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : NULL                               
REMARK 200  RADIATION SOURCE               : NULL                               
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : NULL                               
REMARK 200  WAVELENGTH OR RANGE        (A) : NULL                               
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : NULL                               
REMARK 200  DETECTOR MANUFACTURER          : NULL                               
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : NULL                               
REMARK 200  DATA SCALING SOFTWARE          : NULL                               
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : NULL                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : NULL                               
REMARK 200  RESOLUTION RANGE LOW       (A) : NULL                               
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : NULL                               
REMARK 200  DATA REDUNDANCY                : NULL                               
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : NULL                               
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : NULL                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : NULL                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: NULL                                           
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL                         
REMARK 200 SOFTWARE USED: X-PLOR                                                
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 49.76                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.45                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: NULL                                     
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21                       
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X+1/2,-Y,Z+1/2                                         
REMARK 290       3555   -X,Y+1/2,-Z+1/2                                         
REMARK 290       4555   X+1/2,-Y+1/2,-Z                                         
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000       35.35000            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       81.65000            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       36.75000            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       81.65000            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       35.35000            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       36.75000            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
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: HEPTAMERIC                        
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: HEPTAMERIC                 
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 20330 ANGSTROM**2                         
REMARK 350 SURFACE AREA OF THE COMPLEX: 28870 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -72.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: D, E, F, G, H, A, C                   
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 400                                                                      
REMARK 400 COMPOUND                                                             
REMARK 400 THIS IS THE UNNICKED, UNREDUCED, FORM OF THE TOXIN.  THE A           
REMARK 400 AND C CHAINS ARE LINKED BY A DISULFIDE BRIDGE BETWEEN A              
REMARK 400 187 AND C 199, AND BY A POORLY ORDERED CHAIN PRESUMABLY              
REMARK 400 CONTAINING RESIDUES 189 - 195  WHICH HAS NOT BEEN                    
REMARK 400 MODELED DUE TO VERY POOR ELECTRON DENSITY.                           
REMARK 465                                                                      
REMARK 465 MISSING RESIDUES                                                     
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                       
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                
REMARK 465                                                                      
REMARK 465   M RES C SSSEQI                                                     
REMARK 465     ARG C   192                                                      
REMARK 465     THR C   193                                                      
REMARK 465     ILE C   194                                                      
REMARK 465     THR C   195                                                      
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    HIS F  57   NE2   HIS F  57   CD2    -0.073                       
REMARK 500    HIS H  57   NE2   HIS H  57   CD2    -0.071                       
REMARK 500    HIS A  27   NE2   HIS A  27   CD2    -0.071                       
REMARK 500    HIS A  44   NE2   HIS A  44   CD2    -0.076                       
REMARK 500    HIS A  70   NE2   HIS A  70   CD2    -0.071                       
REMARK 500    HIS A 171   NE2   HIS A 171   CD2    -0.067                       
REMARK 500    HIS A 181   NE2   HIS A 181   CD2    -0.068                       
REMARK 500    HIS A 182   NE2   HIS A 182   CD2    -0.071                       
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    TYR D  18   CB  -  CG  -  CD2 ANGL. DEV. =  -3.8 DEGREES          
REMARK 500    TRP D  88   CD1 -  CG  -  CD2 ANGL. DEV. =   6.3 DEGREES          
REMARK 500    TRP D  88   CE2 -  CD2 -  CG  ANGL. DEV. =  -5.6 DEGREES          
REMARK 500    LEU E   8   CA  -  CB  -  CG  ANGL. DEV. =  18.2 DEGREES          
REMARK 500    TYR E  12   CB  -  CG  -  CD1 ANGL. DEV. =  -3.6 DEGREES          
REMARK 500    ARG E  73   NE  -  CZ  -  NH1 ANGL. DEV. =   4.8 DEGREES          
REMARK 500    ARG E  73   NE  -  CZ  -  NH2 ANGL. DEV. =  -4.3 DEGREES          
REMARK 500    TRP E  88   CD1 -  CG  -  CD2 ANGL. DEV. =   7.3 DEGREES          
REMARK 500    TRP E  88   CB  -  CG  -  CD1 ANGL. DEV. =  -8.8 DEGREES          
REMARK 500    TRP E  88   CE2 -  CD2 -  CG  ANGL. DEV. =  -6.1 DEGREES          
REMARK 500    TRP E  88   CG  -  CD2 -  CE3 ANGL. DEV. =   5.5 DEGREES          
REMARK 500    TYR F  18   CB  -  CG  -  CD2 ANGL. DEV. =  -4.8 DEGREES          
REMARK 500    ARG F  35   NE  -  CZ  -  NH1 ANGL. DEV. =   3.5 DEGREES          
REMARK 500    TRP F  88   CD1 -  CG  -  CD2 ANGL. DEV. =   6.3 DEGREES          
REMARK 500    TRP F  88   CE2 -  CD2 -  CG  ANGL. DEV. =  -5.1 DEGREES          
REMARK 500    ARG G  73   NE  -  CZ  -  NH1 ANGL. DEV. =   5.9 DEGREES          
REMARK 500    ARG G  73   NE  -  CZ  -  NH2 ANGL. DEV. =  -6.9 DEGREES          
REMARK 500    TRP G  88   CD1 -  CG  -  CD2 ANGL. DEV. =   6.9 DEGREES          
REMARK 500    TRP G  88   CE2 -  CD2 -  CG  ANGL. DEV. =  -5.6 DEGREES          
REMARK 500    LYS G 102   O   -  C   -  N   ANGL. DEV. =  10.0 DEGREES          
REMARK 500    ARG H  13   NE  -  CZ  -  NH1 ANGL. DEV. =   3.1 DEGREES          
REMARK 500    ARG H  35   NE  -  CZ  -  NH1 ANGL. DEV. =   3.3 DEGREES          
REMARK 500    MET H  37   CG  -  SD  -  CE  ANGL. DEV. = -10.0 DEGREES          
REMARK 500    ARG H  73   NE  -  CZ  -  NH1 ANGL. DEV. =   4.8 DEGREES          
REMARK 500    ARG H  73   NE  -  CZ  -  NH2 ANGL. DEV. =  -4.9 DEGREES          
REMARK 500    TRP H  88   CD1 -  CG  -  CD2 ANGL. DEV. =   6.9 DEGREES          
REMARK 500    TRP H  88   CE2 -  CD2 -  CG  ANGL. DEV. =  -6.0 DEGREES          
REMARK 500    TRP H  88   CG  -  CD2 -  CE3 ANGL. DEV. =   5.8 DEGREES          
REMARK 500    ARG A   4   NE  -  CZ  -  NH1 ANGL. DEV. =   3.0 DEGREES          
REMARK 500    ARG A   4   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.4 DEGREES          
REMARK 500    ARG A   7   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.2 DEGREES          
REMARK 500    ARG A  25   NE  -  CZ  -  NH1 ANGL. DEV. =   4.7 DEGREES          
REMARK 500    ARG A  25   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.2 DEGREES          
REMARK 500    TRP A 127   CD1 -  CG  -  CD2 ANGL. DEV. =   6.7 DEGREES          
REMARK 500    TRP A 127   CE2 -  CD2 -  CG  ANGL. DEV. =  -5.7 DEGREES          
REMARK 500    TYR A 128   CB  -  CG  -  CD2 ANGL. DEV. =  -3.7 DEGREES          
REMARK 500    ARG A 143   NE  -  CZ  -  NH1 ANGL. DEV. =   3.2 DEGREES          
REMARK 500    ARG A 146   NE  -  CZ  -  NH1 ANGL. DEV. =   4.3 DEGREES          
REMARK 500    ARG A 146   NE  -  CZ  -  NH2 ANGL. DEV. =  -4.5 DEGREES          
REMARK 500    ARG A 163   NE  -  CZ  -  NH1 ANGL. DEV. =   4.1 DEGREES          
REMARK 500    TRP A 174   CD1 -  CG  -  CD2 ANGL. DEV. =   7.2 DEGREES          
REMARK 500    TRP A 174   CE2 -  CD2 -  CG  ANGL. DEV. =  -6.5 DEGREES          
REMARK 500    TRP A 174   CG  -  CD2 -  CE3 ANGL. DEV. =   5.7 DEGREES          
REMARK 500    TRP A 179   CD1 -  CG  -  CD2 ANGL. DEV. =   6.0 DEGREES          
REMARK 500    TRP A 179   CE2 -  CD2 -  CG  ANGL. DEV. =  -5.7 DEGREES          
REMARK 500    ARG C 212   NE  -  CZ  -  NH1 ANGL. DEV. =   3.3 DEGREES          
REMARK 500    ARG C 235   NE  -  CZ  -  NH1 ANGL. DEV. =   3.8 DEGREES          
REMARK 500    ARG C 235   NE  -  CZ  -  NH2 ANGL. DEV. =  -5.9 DEGREES          
REMARK 500    ARG C 237   CA  -  CB  -  CG  ANGL. DEV. =  15.9 DEGREES          
REMARK 500    ARG C 237   NE  -  CZ  -  NH1 ANGL. DEV. =   3.9 DEGREES          
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    ASN E  14       38.47     71.35                                   
REMARK 500    LYS E  34       -3.69     76.00                                   
REMARK 500    ASP G  83      -75.91    -83.73                                   
REMARK 500    LYS H  34       -0.90     73.88                                   
REMARK 500    ASP H  83      -64.82    -94.27                                   
REMARK 500    ASP A   3       21.30    -74.20                                   
REMARK 500    ARG A  54      108.05    -32.93                                   
REMARK 500    PRO A  92        6.83    -69.16                                   
REMARK 500    ARG C 237        2.21    -50.40                                   
REMARK 500    GLU C 239      159.28    172.13                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: PLANAR GROUPS                                              
REMARK 500                                                                      
REMARK 500 PLANAR GROUPS IN THE FOLLOWING RESIDUES HAVE A TOTAL                 
REMARK 500 RMS DISTANCE OF ALL ATOMS FROM THE BEST-FIT PLANE                    
REMARK 500 BY MORE THAN AN EXPECTED VALUE OF 6*RMSD, WITH AN                    
REMARK 500 RMSD 0.02 ANGSTROMS, OR AT LEAST ONE ATOM HAS                        
REMARK 500 AN RMSD GREATER THAN THIS VALUE                                      
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        RMS     TYPE                                    
REMARK 500    TYR D  76         0.07    SIDE CHAIN                              
REMARK 500    TYR E  76         0.08    SIDE CHAIN                              
REMARK 500    TYR H  76         0.07    SIDE CHAIN                              
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 700                                                                      
REMARK 700 SHEET                                                                
REMARK 700 IN THE PENTAMER THE BETA SHEETS FROM ADJACENT MONOMERS               
REMARK 700 COMBINE TO FORM A CONTINUOUS SIX-STRANDED ANTI-PARALLEL              
REMARK 700 SHEET ACROSS EACH MONOMER-MONOMER INTERFACE.                         
DBREF  1LTA D    1   103  UNP    P32890   ELBP_ECOLI      22    124             
DBREF  1LTA E    1   103  UNP    P32890   ELBP_ECOLI      22    124             
DBREF  1LTA F    1   103  UNP    P32890   ELBP_ECOLI      22    124             
DBREF  1LTA G    1   103  UNP    P32890   ELBP_ECOLI      22    124             
DBREF  1LTA H    1   103  UNP    P32890   ELBP_ECOLI      22    124             
DBREF  1LTA A    1   188  UNP    P06717   ELAP_ECOLI      19    206             
DBREF  1LTA C  192   240  UNP    P06717   ELAP_ECOLI     210    258             
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 A  188  ASN GLY ASP ARG LEU TYR ARG ALA ASP SER ARG PRO PRO          
SEQRES   2 A  188  ASP GLU ILE LYS ARG SER GLY GLY LEU MET PRO ARG GLY          
SEQRES   3 A  188  HIS ASN GLU TYR PHE ASP ARG GLY THR GLN MET ASN ILE          
SEQRES   4 A  188  ASN LEU TYR ASP HIS ALA ARG GLY THR GLN THR GLY PHE          
SEQRES   5 A  188  VAL ARG TYR ASP ASP GLY TYR VAL SER THR SER LEU SER          
SEQRES   6 A  188  LEU ARG SER ALA HIS LEU ALA GLY GLN SER ILE LEU SER          
SEQRES   7 A  188  GLY TYR SER THR TYR TYR ILE TYR VAL ILE ALA THR ALA          
SEQRES   8 A  188  PRO ASN MET PHE ASN VAL ASN ASP VAL LEU GLY VAL TYR          
SEQRES   9 A  188  SER PRO HIS PRO TYR GLU GLN GLU VAL SER ALA LEU GLY          
SEQRES  10 A  188  GLY ILE PRO TYR SER GLN ILE TYR GLY TRP TYR ARG VAL          
SEQRES  11 A  188  ASN PHE GLY VAL ILE ASP GLU ARG LEU HIS ARG ASN ARG          
SEQRES  12 A  188  GLU TYR ARG ASP ARG TYR TYR ARG ASN LEU ASN ILE ALA          
SEQRES  13 A  188  PRO ALA GLU ASP GLY TYR ARG LEU ALA GLY PHE PRO PRO          
SEQRES  14 A  188  ASP HIS GLN ALA TRP ARG GLU GLU PRO TRP ILE HIS HIS          
SEQRES  15 A  188  ALA PRO GLN GLY CYS GLY                                      
SEQRES   1 C   49  ARG THR ILE THR GLY ASP THR CYS ASN GLU GLU THR GLN          
SEQRES   2 C   49  ASN LEU SER THR ILE TYR LEU ARG GLU TYR GLN SER LYS          
SEQRES   3 C   49  VAL LYS ARG GLN ILE PHE SER ASP TYR GLN SER GLU VAL          
SEQRES   4 C   49  ASP ILE TYR ASN ARG ILE ARG ASP GLU LEU                      
HET    GAL  D 104      12                                                       
HET    GAL  E 104      12                                                       
HET    GAL  F 104      12                                                       
HET    GAL  G 104      12                                                       
HET    GAL  H 104      12                                                       
HETNAM     GAL BETA-D-GALACTOPYRANOSE                                           
HETSYN     GAL BETA-D-GALACTOSE; D-GALACTOSE; GALACTOSE                         
FORMUL   8  GAL    5(C6 H12 O6)                                                 
FORMUL  13  HOH   *295(H2 O)                                                    
HELIX    1 DA1 ILE D    5  SER D   10  1                                   6    
HELIX    2 DA2 GLN D   61  THR D   78  1                                  18    
HELIX    3 EA1 ILE E    5  CYS E    9  1                                   5    
HELIX    4 EA2 ASP E   59  LEU E   77  1                                  19    
HELIX    5 FA1 ILE F    5  CYS F    9  1                                   5    
HELIX    6 FA2 ASP F   59  THR F   78  1                                  20    
HELIX    7 GA1 ILE G    5  CYS G    9  1                                   5    
HELIX    8 GA2 GLN G   61  THR G   78  1                                  18    
HELIX    9 HA1 ILE H    5  CYS H    9  1                                   5    
HELIX   10 HA2 GLN H   61  LEU H   77  1                                  17    
HELIX   11 AA1 PRO A   13  SER A   19  1                                   7    
HELIX   12 AA2 LEU A   41  ARG A   46  1                                   6    
HELIX   13 AA3 LEU A   66  ILE A   76  1                                  11    
HELIX   14 AA4 VAL A   97  LEU A  101  1                                   5    
HELIX   15 AA5 GLY A  102  TYR A  104  5                                   3    
HELIX   16 AA6 PRO A  108  GLU A  110  5                                   3    
HELIX   17 AA7 TYR A  121  GLN A  123  5                                   3    
HELIX   18 AA8 ASP A  147  ARG A  151  1                                   5    
HELIX   19 AA9 ALA A  158  TYR A  162  1                                   5    
HELIX   20 A11 GLN A  172  ARG A  175  5                                   4    
HELIX   21 A12 TRP A  179  HIS A  182  5                                   4    
HELIX   22 CA1 ASP C  197  ILE C  222  1                                  26    
HELIX   23 CA2 PHE C  223  TYR C  226  5                                   4    
HELIX   24 CA3 ILE C  232  ILE C  236  1                                   5    
SHEET    1 BB1 6 THR D  15  ASP D  22  0                                        
SHEET    2 BB1 6 ILE D  82  TRP D  88 -1                                        
SHEET    3 BB1 6 ASN D  94  LYS D 102 -1                                        
SHEET    4 BB1 6 SER E  26  SER E  30 -1                                        
SHEET    5 BB1 6 MET E  37  THR E  41 -1                                        
SHEET    6 BB1 6 THR E  47  VAL E  50 -1                                        
SHEET    1 BB2 6 THR E  15  ASP E  22  0                                        
SHEET    2 BB2 6 ILE E  82  TRP E  88 -1                                        
SHEET    3 BB2 6 ASN E  94  LYS E 102 -1                                        
SHEET    4 BB2 6 SER F  26  SER F  30 -1                                        
SHEET    5 BB2 6 MET F  37  THR F  41 -1                                        
SHEET    6 BB2 6 THR F  47  VAL F  50 -1                                        
SHEET    1 BB3 6 THR F  15  ASP F  22  0                                        
SHEET    2 BB3 6 ILE F  82  TRP F  88 -1                                        
SHEET    3 BB3 6 ASN F  94  LYS F 102 -1                                        
SHEET    4 BB3 6 SER G  26  SER G  30 -1                                        
SHEET    5 BB3 6 MET G  37  THR G  41 -1                                        
SHEET    6 BB3 6 THR G  47  VAL G  50 -1                                        
SHEET    1 BB4 6 THR G  15  ASP G  22  0                                        
SHEET    2 BB4 6 ILE G  82  TRP G  88 -1                                        
SHEET    3 BB4 6 ASN G  94  LYS G 102 -1                                        
SHEET    4 BB4 6 SER H  26  SER H  30 -1                                        
SHEET    5 BB4 6 MET H  37  THR H  41 -1                                        
SHEET    6 BB4 6 THR H  47  VAL H  50 -1                                        
SHEET    1 BB5 6 THR H  15  ASP H  22  0                                        
SHEET    2 BB5 6 ILE H  82  TRP H  88 -1                                        
SHEET    3 BB5 6 ASN H  94  LYS H 102 -1                                        
SHEET    4 BB5 6 SER D  26  SER D  30 -1                                        
SHEET    5 BB5 6 MET D  37  THR D  41 -1                                        
SHEET    6 BB5 6 THR D  47  VAL D  50 -1                                        
SHEET    1 BA1 7 MET A  94  ASN A  96  0                                        
SHEET    2 BA1 7 GLU A 112  LEU A 116 -1                                        
SHEET    3 BA1 7 TYR A  59  SER A  63 -1                                        
SHEET    4 BA1 7 ARG A   4  ASP A   9 -1                                        
SHEET    5 BA1 7 THR A  82  ALA A  89 -1                                        
SHEET    6 BA1 7 ILE A 124  ASN A 131 -1                                        
SHEET    7 BA1 7 VAL A 134  ARG A 141 -1                                        
SSBOND   1 CYS D    9    CYS D   86                          1555   1555  2.07  
SSBOND   2 CYS E    9    CYS E   86                          1555   1555  2.01  
SSBOND   3 CYS F    9    CYS F   86                          1555   1555  2.00  
SSBOND   4 CYS G    9    CYS G   86                          1555   1555  2.03  
SSBOND   5 CYS H    9    CYS H   86                          1555   1555  2.03  
SSBOND   6 CYS A  187    CYS C  199                          1555   1555  2.03  
CISPEP   1 THR D   92    PRO D   93          0        -5.20                     
CISPEP   2 THR E   92    PRO E   93          0       -10.14                     
CISPEP   3 THR F   92    PRO F   93          0       -13.39                     
CISPEP   4 THR G   92    PRO G   93          0       -14.76                     
CISPEP   5 THR H   92    PRO H   93          0       -25.11                     
CISPEP   6 GLU A  177    PRO A  178          0         3.38                     
CRYST1   70.700   73.500  163.300  90.00  90.00  90.00 P 21 21 21   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      0.014144  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.013605  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.006124        0.00000