PDB Short entry for 1HC9
HEADER    TOXIN/PEPTIDE                           02-MAY-01   1HC9              
TITLE     ALPHA-BUNGAROTOXIN COMPLEXED WITH HIGH AFFINITY PEPTIDE               
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: ALPHA-BUNGAROTOXIN ISOFORM V31;                            
COMPND   3 CHAIN: A;                                                            
COMPND   4 SYNONYM: ALPHA-BTX V31, ALPHA-BGT(V31), BGTX V31, LONG NEUROTOXIN 1; 
COMPND   5 OTHER_DETAILS: ALPHA-NEUROTOXIN;                                     
COMPND   6 MOL_ID: 2;                                                           
COMPND   7 MOLECULE: ALPHA-BUNGAROTOXIN ISOFORM A31;                            
COMPND   8 CHAIN: B;                                                            
COMPND   9 SYNONYM: ALPHA-BTX A31, ALPHA-BGT(A31), BGTX A31, LONG NEUROTOXIN 1; 
COMPND  10 MOL_ID: 3;                                                           
COMPND  11 MOLECULE: PEPTIDE INHIBITOR;                                         
COMPND  12 CHAIN: C, D;                                                         
COMPND  13 SYNONYM: HIGH AFFINITY PEPTIDE;                                      
COMPND  14 ENGINEERED: YES;                                                     
COMPND  15 OTHER_DETAILS: A SYNTHESIZED PEPTIDE MIMICKING ACHR LOOP THAT        
COMPND  16 INHIBITS A-BTX BINDING TO ACHR                                       
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: BUNGARUS MULTICINCTUS;                          
SOURCE   3 ORGANISM_COMMON: MANY-BANDED KRAIT;                                  
SOURCE   4 ORGANISM_TAXID: 8616;                                                
SOURCE   5 SECRETION: VENOM;                                                    
SOURCE   6 MOL_ID: 2;                                                           
SOURCE   7 ORGANISM_SCIENTIFIC: BUNGARUS MULTICINCTUS;                          
SOURCE   8 ORGANISM_COMMON: MANY-BANDED KRAIT;                                  
SOURCE   9 ORGANISM_TAXID: 8616;                                                
SOURCE  10 SECRETION: VENOM;                                                    
SOURCE  11 MOL_ID: 3;                                                           
SOURCE  12 SYNTHETIC: YES;                                                      
SOURCE  13 ORGANISM_SCIENTIFIC: SYNTHETIC CONSTRUCT;                            
SOURCE  14 ORGANISM_TAXID: 32630;                                               
SOURCE  15 OTHER_DETAILS: MIMOTOPE OF THE NICOTINIC ACETYLCHOLINE RECEPTOR      
KEYWDS    TOXIN/PEPTIDE, COMPLEX (TOXIN-PEPTIDE), ACETYLCHOLINE RECEPTOR        
KEYWDS   2 MIMITOPE, ALPHA-BUNGAROTOXIN, 3- FINGER, PROTEIN-PEPTIDE COMPLEX,    
KEYWDS   3 TOXIN, TOXIN-PEPTIDE COMPLEX                                         
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    M.HAREL,R.KASHER,J.L.SUSSMAN                                          
REVDAT   6   22-MAR-17 1HC9    1       SOURCE                                   
REVDAT   5   19-DEC-12 1HC9    1       JRNL                                     
REVDAT   4   20-JUN-12 1HC9    1       COMPND SOURCE JRNL   REMARK              
REVDAT   4 2                   1       VERSN  DBREF  SEQADV FORMUL              
REVDAT   3   24-FEB-09 1HC9    1       VERSN                                    
REVDAT   2   05-FEB-04 1HC9    1       ATOM                                     
REVDAT   1   10-NOV-01 1HC9    0                                                
JRNL        AUTH   M.HAREL,R.KASHER,A.NICOLAS,J.M.GUSS,M.BALASS,M.FRIDKIN,      
JRNL        AUTH 2 A.B.SMIT,K.BREJC,T.K.SIXMA,E.KATCHALSKI-KATZIR,J.L.SUSSMAN,  
JRNL        AUTH 3 S.FUCHS                                                      
JRNL        TITL   THE BINDING SITE OF ACETYLCHOLINE RECEPTOR AS VISUALIZED IN  
JRNL        TITL 2 THE X-RAY STRUCTURE OF A COMPLEX BETWEEN ALPHA-BUNGAROTOXIN  
JRNL        TITL 3 AND A MIMOTOPE PEPTIDE.                                      
JRNL        REF    NEURON                        V.  32   265 2001              
JRNL        REFN                   ISSN 0896-6273                               
JRNL        PMID   11683996                                                     
JRNL        DOI    10.1016/S0896-6273(01)00461-5                                
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.80 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS 1.0                                              
REMARK   3   AUTHORS     : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE-              
REMARK   3               : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU,              
REMARK   3               : READ,RICE,SIMONSON,WARREN                            
REMARK   3                                                                      
REMARK   3  REFINEMENT TARGET : NULL                                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.80                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 23.47                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : NULL                           
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 98.9                           
REMARK   3   NUMBER OF REFLECTIONS             : 22236                          
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) : 0.202                           
REMARK   3   FREE R VALUE                     : 0.235                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 9.900                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 2203                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : 0.005                           
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 6                            
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 1.80                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.91                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 98.50                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 3256                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2930                       
REMARK   3   BIN FREE R VALUE                    : 0.3210                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 10.40                        
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 376                          
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.017                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 1337                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 2                                       
REMARK   3   SOLVENT ATOMS            : 217                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 16.70                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 27.20                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 2.13000                                              
REMARK   3    B22 (A**2) : 2.34000                                              
REMARK   3    B33 (A**2) : -4.46000                                             
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : 0.20                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.22                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : 5.00                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : 0.25                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.23                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.005                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.500                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 25.90                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 0.790                           
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : RESTRAINED                                
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : 1.300 ; 1.500                
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : 2.110 ; 2.000                
REMARK   3   SIDE-CHAIN BOND              (A**2) : 1.870 ; 2.000                
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : 2.740 ; 2.500                
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : FLAT MODEL                                           
REMARK   3   KSOL        : 0.40                                                 
REMARK   3   BSOL        : 70.30                                                
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  : PROTEIN_REP.PARAM                              
REMARK   3  PARAMETER FILE  2  : WATER_REP.PARAM                                
REMARK   3  PARAMETER FILE  3  : ION.PARAM                                      
REMARK   3  PARAMETER FILE  4  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : PROTEIN.TOP                                    
REMARK   3  TOPOLOGY FILE  2   : WATER.TOP                                      
REMARK   3  TOPOLOGY FILE  3   : ION.TOP                                        
REMARK   3  TOPOLOGY FILE  4   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: RESIDUES WITH ALTERNATE CONFORMATIONS:    
REMARK   3  A12, A48, A50, A52, A56, A59, B34, B56, B71 THE 2 IODIDE IONS I1    
REMARK   3  A AND I1 B HAVE OCCUPANCY OF 0.4                                    
REMARK   4                                                                      
REMARK   4 1HC9 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 02-MAY-01.                  
REMARK 100 THE PDBE ID CODE IS EBI-6056.                                        
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 15-JUL-00                          
REMARK 200  TEMPERATURE           (KELVIN) : 100.0                              
REMARK 200  PH                             : 7.50                               
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          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.5418                             
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : MIRRORS                            
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : NULL                               
REMARK 200  DETECTOR MANUFACTURER          : RIGAKU                             
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 19144                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.800                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 23.500                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.0                               
REMARK 200  DATA REDUNDANCY                : 6.100                              
REMARK 200  R MERGE                    (I) : 0.05600                            
REMARK 200  R SYM                      (I) : 0.08100                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 14.0000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.80                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.86                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 99.1                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 5.60                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.55500                            
REMARK 200  R SYM FOR SHELL            (I) : 0.59400                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 2.300                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: MOLREP                                                
REMARK 200 STARTING MODEL: PDB ENTRY 1NTN 1-66 RESIDUES                         
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 63.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.35                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 40% PEG 3350, 0.1M PIPES BUFFER PH       
REMARK 280  7.5, PH 7.50                                                        
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 2 2 21                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,-Y,Z+1/2                                             
REMARK 290       3555   -X,Y,-Z+1/2                                             
REMARK 290       4555   X,-Y,-Z                                                 
REMARK 290       5555   X+1/2,Y+1/2,Z                                           
REMARK 290       6555   -X+1/2,-Y+1/2,Z+1/2                                     
REMARK 290       7555   -X+1/2,Y+1/2,-Z+1/2                                     
REMARK 290       8555   X+1/2,-Y+1/2,-Z                                         
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       36.63150            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       36.63150            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   5  1.000000  0.000000  0.000000       21.02100            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       76.67800            
REMARK 290   SMTRY3   5  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   6 -1.000000  0.000000  0.000000       21.02100            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       76.67800            
REMARK 290   SMTRY3   6  0.000000  0.000000  1.000000       36.63150            
REMARK 290   SMTRY1   7 -1.000000  0.000000  0.000000       21.02100            
REMARK 290   SMTRY2   7  0.000000  1.000000  0.000000       76.67800            
REMARK 290   SMTRY3   7  0.000000  0.000000 -1.000000       36.63150            
REMARK 290   SMTRY1   8  1.000000  0.000000  0.000000       21.02100            
REMARK 290   SMTRY2   8  0.000000 -1.000000  0.000000       76.67800            
REMARK 290   SMTRY3   8  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 300 REMARK: COMPLEX OF THE ALPHA-BUNGAROTOXIN AND THE                    
REMARK 300  PEPTIDE INHIBITOR                                                   
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: DIMERIC                           
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 1510 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 6220 ANGSTROM**2                        
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -9.9 KCAL/MOL                         
REMARK 350 APPLY THE FOLLOWING TO CHAINS: 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 350                                                                      
REMARK 350 BIOMOLECULE: 2                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: DIMERIC                           
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 1480 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 5930 ANGSTROM**2                        
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -9.4 KCAL/MOL                         
REMARK 350 APPLY THE FOLLOWING TO CHAINS: B, D                                  
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 400                                                                      
REMARK 400 COMPOUND                                                             
REMARK 400 THE PEPTIDE BINDS ALPHA-BUNGAROTOXIN AND MIMICKS BINDING             
REMARK 400  OF THE TOXIN TO THE NICOTINIC ACETYLCHOLINE RECEPTOR.               
REMARK 400  RESIDUES A31 IS SEEN AS VAL WITH OCCUPANCY 0.3 AND ALA              
REMARK 400  WITH OCCUPANCY 0.7, ACCORDING TO A WELL KNOWN MUTATION OF           
REMARK 400  ALPHA-BUNGAROTOXIN                                                  
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     ASP D    13                                                      
REMARK 480                                                                      
REMARK 480 ZERO OCCUPANCY ATOM                                                  
REMARK 480 THE FOLLOWING RESIDUES HAVE ATOMS MODELED WITH ZERO                  
REMARK 480 OCCUPANCY. THE LOCATION AND PROPERTIES OF THESE ATOMS                
REMARK 480 MAY NOT BE RELIABLE. (M=MODEL NUMBER; RES=RESIDUE NAME;              
REMARK 480 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE):         
REMARK 480   M RES C SSEQI ATOMS                                                
REMARK 480     VAL A   31   CG1  CG2                                            
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    ASP A  30     -164.36   -120.12                                   
REMARK 500    ASP A  30     -164.62   -120.12                                   
REMARK 500    TYR A  54       42.79   -105.79                                   
REMARK 500    ASN A  66       56.49   -114.65                                   
REMARK 500    ASN B  66       57.22   -118.41                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE IOD A 1075                
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE IOD B 1075                
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1ABT   RELATED DB: PDB                                   
REMARK 900 ALPHA-BUNGAROTOXIN COMPLEXED WITH THE 185 - 196 FRAGMENT OF THE      
REMARK 900 ALPHA-SUBUNIT OF THE TORPEDO NICOTINIC ACETYLCHOLINE RECEPTOR (NMR,  
REMARK 900 4 STRUCTURES)                                                        
REMARK 900 RELATED ID: 1BXP   RELATED DB: PDB                                   
REMARK 900 SOLUTION NMR STRUCTURE OF THE COMPLEX OF ALPHA-BUNGAROTOXIN WITH A   
REMARK 900 LIBRARY DERIVED PEPTIDE, 20 STRUCTURES                               
REMARK 900 RELATED ID: 1HAA   RELATED DB: PDB                                   
REMARK 900 A BETA-HAIRPIN STRUCTURE IN A 13-MER PEPTIDE THAT BINDS A-           
REMARK 900 BUNGAROTOXIN WITH HIGH AFFINITY AND NEUTRALIZES ITS TOXICITY         
REMARK 900 RELATED ID: 1HAJ   RELATED DB: PDB                                   
REMARK 900 A BETA-HAIRPIN STRUCTURE IN A 13-MER PEPTIDE THAT BINDS A-           
REMARK 900 BUNGAROTOXIN WITH HIGH AFFINITY AND NEUTRALIZES ITS TOXICITY         
REMARK 900 RELATED ID: 1HN7   RELATED DB: PDB                                   
REMARK 900 NMR STRUCTURE OF THE COMPLEX BETWEEN A-BUNGAROTOXIN AND AMIMOTOPE    
REMARK 900 OF THE NICOTINIC ACETILCHOLINE RECEPTOR                              
REMARK 900 RELATED ID: 1HOY   RELATED DB: PDB                                   
REMARK 900 NMR STRUCTURE OF THE COMPLEX BETWEEN A-BUNGAROTOXIN AND AMIMOTOPE    
REMARK 900 OF THE NICOTINIC ACETILCHOLINE RECEPTOR                              
REMARK 900 RELATED ID: 1IDG   RELATED DB: PDB                                   
REMARK 900 THE NMR SOLUTION STRUCTURE OF THE COMPLEX FORMED BETWEEN ALPHA-      
REMARK 900 BUNGAROTOXIN AND AN 18MER COGNATE PEPTIDE                            
REMARK 900 RELATED ID: 1IDH   RELATED DB: PDB                                   
REMARK 900 THE NMR SOLUTION STRUCTURE OF THE COMPLEX FORMED BETWEEN ALPHA-      
REMARK 900 BUNGAROTOXIN AND AN 18MER COGNATE PEPTIDE                            
REMARK 900 RELATED ID: 1IDI   RELATED DB: PDB                                   
REMARK 900 THE NMR SOLUTION STRUCTURE OF ALPHA-BUNGAROTOXIN                     
REMARK 900 RELATED ID: 1IDL   RELATED DB: PDB                                   
REMARK 900 THE NMR SOLUTION STRUCTURE OF ALPHA-BUNGAROTOXIN                     
REMARK 900 RELATED ID: 2BTX   RELATED DB: PDB                                   
REMARK 900 SOLUTION NMR STRUCTURE OF THE COMPLEX OF ALPHA-BUNGAROTOXIN WITH A   
REMARK 900 LIBRARY DERIVED PEPTIDE, NMR, MINIMIZED AVERAGE STRUCTURE            
DBREF  1HC9 A    1    74  UNP    P60616   NXL1V_BUNMU     22     95             
DBREF  1HC9 B    1    74  UNP    P60615   NXL1A_BUNMU     22     95             
DBREF  1HC9 C    1    13  PDB    1HC9     1HC9             1     13             
DBREF  1HC9 D    1    13  PDB    1HC9     1HC9             1     13             
SEQRES   1 A   74  ILE VAL CYS HIS THR THR ALA THR SER PRO ILE SER ALA          
SEQRES   2 A   74  VAL THR CYS PRO PRO GLY GLU ASN LEU CYS TYR ARG LYS          
SEQRES   3 A   74  MET TRP CYS ASP VAL PHE CYS SER SER ARG GLY LYS VAL          
SEQRES   4 A   74  VAL GLU LEU GLY CYS ALA ALA THR CYS PRO SER LYS LYS          
SEQRES   5 A   74  PRO TYR GLU GLU VAL THR CYS CYS SER THR ASP LYS CYS          
SEQRES   6 A   74  ASN PRO HIS PRO LYS GLN ARG PRO GLY                          
SEQRES   1 B   74  ILE VAL CYS HIS THR THR ALA THR SER PRO ILE SER ALA          
SEQRES   2 B   74  VAL THR CYS PRO PRO GLY GLU ASN LEU CYS TYR ARG LYS          
SEQRES   3 B   74  MET TRP CYS ASP ALA PHE CYS SER SER ARG GLY LYS VAL          
SEQRES   4 B   74  VAL GLU LEU GLY CYS ALA ALA THR CYS PRO SER LYS LYS          
SEQRES   5 B   74  PRO TYR GLU GLU VAL THR CYS CYS SER THR ASP LYS CYS          
SEQRES   6 B   74  ASN PRO HIS PRO LYS GLN ARG PRO GLY                          
SEQRES   1 C   13  TRP ARG TYR TYR GLU SER SER LEU LEU PRO TYR PRO ASP          
SEQRES   1 D   13  TRP ARG TYR TYR GLU SER SER LEU LEU PRO TYR PRO ASP          
HET    IOD  A1075       1                                                       
HET    IOD  B1075       1                                                       
HETNAM     IOD IODIDE ION                                                       
FORMUL   5  IOD    2(I 1-)                                                      
FORMUL   7  HOH   *217(H2 O)                                                    
HELIX    1   1 PHE A   32  GLY A   37  1                                   6    
HELIX    2   2 PHE B   32  GLY B   37  1                                   6    
SHEET    1  AA 2 VAL A   2  THR A   5  0                                        
SHEET    2  AA 2 SER A  12  THR A  15 -1  O  SER A  12   N  THR A   5           
SHEET    1  AB 5 GLU A  56  CYS A  60  0                                        
SHEET    2  AB 5 LEU A  22  TRP A  28 -1  O  CYS A  23   N  CYS A  60           
SHEET    3  AB 5 VAL A  39  ALA A  45 -1  O  VAL A  39   N  TRP A  28           
SHEET    1  CB 5 ARG C   2  TYR C   4  0                                        
SHEET    2  CB 5 SER C   7  TYR C  11 -1  O  SER C   7   N  TYR C   4           
SHEET    1  BA 2 VAL B   2  THR B   5  0                                        
SHEET    2  BA 2 SER B  12  THR B  15 -1  O  SER B  12   N  THR B   5           
SHEET    1  BB 4 GLU B  56  CYS B  60  0                                        
SHEET    2  BB 4 LEU B  22  TRP B  28 -1  O  CYS B  23   N  CYS B  60           
SHEET    3  BB 4 VAL B  39  ALA B  45 -1  O  VAL B  39   N  TRP B  28           
SHEET    1  DB 4 TYR D   3  TYR D   4  0                                        
SSBOND   1 CYS A    3    CYS A   23                          1555   1555  2.03  
SSBOND   2 CYS A   16    CYS A   44                          1555   1555  2.03  
SSBOND   3 CYS A   29    CYS A   33                          1555   1555  2.03  
SSBOND   4 CYS A   48    CYS A   59                          1555   1555  2.48  
SSBOND   5 CYS A   59    CYS A   59                          1555   3655  1.90  
SSBOND   6 CYS A   60    CYS A   65                          1555   1555  2.03  
SSBOND   7 CYS B    3    CYS B   23                          1555   1555  2.02  
SSBOND   8 CYS B   16    CYS B   44                          1555   1555  2.03  
SSBOND   9 CYS B   29    CYS B   33                          1555   1555  2.04  
SSBOND  10 CYS B   48    CYS B   59                          1555   1555  2.03  
SSBOND  11 CYS B   60    CYS B   65                          1555   1555  2.02  
CISPEP   1 SER A    9    PRO A   10          0         0.06                     
CISPEP   2 SER B    9    PRO B   10          0        -0.07                     
SITE     1 AC1  3 ARG A  25  THR A  58  HOH A2081                               
SITE     1 AC2  4 ARG B  25  MET B  27  GLU B  56  THR B  58                    
CRYST1   42.042  153.356   73.263  90.00  90.00  90.00 C 2 2 21     16          
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      0.023786  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.006521  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.013649        0.00000