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 7 13-DEC-23 1HC9 1 REMARK SHEET 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 DEPOSITION ID IS D_1290006056. 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 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 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 525 REMARK 525 SOLVENT REMARK 525 REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER; REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE REMARK 525 NUMBER; I=INSERTION CODE): REMARK 525 REMARK 525 M RES CSSEQI REMARK 525 HOH A2002 DISTANCE = 6.64 ANGSTROMS REMARK 525 HOH A2015 DISTANCE = 6.81 ANGSTROMS REMARK 525 HOH A2021 DISTANCE = 6.61 ANGSTROMS REMARK 525 HOH B2005 DISTANCE = 5.94 ANGSTROMS REMARK 525 HOH B2006 DISTANCE = 7.65 ANGSTROMS REMARK 525 HOH B2008 DISTANCE = 6.68 ANGSTROMS REMARK 525 HOH B2009 DISTANCE = 6.40 ANGSTROMS REMARK 525 HOH D2002 DISTANCE = 6.55 ANGSTROMS REMARK 525 HOH D2003 DISTANCE = 6.94 ANGSTROMS REMARK 525 HOH D2012 DISTANCE = 6.21 ANGSTROMS 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 3 GLU A 56 CYS A 60 0 SHEET 2 AB 3 LEU A 22 TRP A 28 -1 O CYS A 23 N CYS A 60 SHEET 3 AB 3 VAL A 39 ALA A 45 -1 O VAL A 39 N TRP A 28 SHEET 1 CB 2 ARG C 2 TYR C 4 0 SHEET 2 CB 2 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 3 GLU B 56 CYS B 60 0 SHEET 2 BB 3 LEU B 22 TRP B 28 -1 O CYS B 23 N CYS B 60 SHEET 3 BB 3 VAL B 39 ALA B 45 -1 O VAL B 39 N TRP B 28 SHEET 1 DB 1 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