HEADER TOXIN 16-AUG-06 2I28 TITLE SOLUTION STRUCTURE OF ALPHA-CONOTOXIN BUIA COMPND MOL_ID: 1; COMPND 2 MOLECULE: ALPHA-CONOTOXIN BUIA; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: ALPHA-CONOTOXIN BUIA; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 OTHER_DETAILS: THIS SEQUENCE OCCURS NATURALLY IN CONUS SOURCE 4 BULLATUS. KEYWDS ALPHA-HELIX, BETA-TURN, TWO DISULFIDE BONDS, C-TERMINAL KEYWDS 2 AMIDATION, TOXIN EXPDTA SOLUTION NMR NUMMDL 20 AUTHOR S.-W.CHI,D.-H.KIM,B.M.OLIVERA,J.M.MCINTOSH,K.-H.HAN REVDAT 2 24-FEB-09 2I28 1 VERSN REVDAT 1 31-OCT-06 2I28 0 JRNL AUTH S.-W.CHI,D.-H.KIM,B.M.OLIVERA,J.M.MCINTOSH,K.-H.HAN JRNL TITL NMR STRUCTURE DETERMINATION OF ALPHA-CONOTOXIN JRNL TITL 2 BUIA, A NOVEL NEURONAL NICOTINIC ACETYLCHOLINE JRNL TITL 3 RECEPTOR ANTAGONIST WITH AN UNUSUAL 4/4 DISULFIDE JRNL TITL 4 SCAFFOLD JRNL REF BIOCHEM.BIOPHYS.RES.COMMUN. V. 349 1228 2006 JRNL REFN ISSN 0006-291X JRNL PMID 16979596 JRNL DOI 10.1016/J.BBRC.2006.08.164 REMARK 1 REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS REMARK 3 AUTHORS : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE- REMARK 3 KUNSTLEVE,JIANG,KUSZEWSKI,NILGES, PANNU,READ, REMARK 3 RICE,SIMONSON,WARREN REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 2I28 COMPLIES WITH FORMAT V. 3.15, 01-DEC-08 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 18-AUG-06. REMARK 100 THE RCSB ID CODE IS RCSB039044. REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 278; 288 REMARK 210 PH : 3.04; 3.04 REMARK 210 IONIC STRENGTH : 0; 0 REMARK 210 PRESSURE : 1ATM; 1ATM REMARK 210 SAMPLE CONTENTS : 5MM ALPHA-CONOTOXIN BUIA; 90% REMARK 210 H2O, 10% D2O REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : 2D NOESY, 2D TOCSY, DQF-COSY REMARK 210 SPECTROMETER FIELD STRENGTH : 600 MHZ REMARK 210 SPECTROMETER MODEL : INOVA REMARK 210 SPECTROMETER MANUFACTURER : VARIAN REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : VNMR, NMRPIPE REMARK 210 METHOD USED : SIMULATED ANNEALING REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : 50 REMARK 210 CONFORMERS, NUMBER SUBMITTED : 20 REMARK 210 CONFORMERS, SELECTION CRITERIA : STRUCTURES WITH THE LOWEST REMARK 210 ENERGY REMARK 210 REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : 1 REMARK 210 REMARK 210 REMARK: NULL REMARK 215 REMARK 215 NMR STUDY REMARK 215 THE COORDINATES IN THIS ENTRY WERE GENERATED FROM SOLUTION REMARK 215 NMR DATA. PROTEIN DATA BANK CONVENTIONS REQUIRE THAT REMARK 215 CRYST1 AND SCALE RECORDS BE INCLUDED, BUT THE VALUES ON REMARK 215 THESE RECORDS ARE MEANINGLESS. 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 1 TYR A 12 51.15 167.50 REMARK 500 2 TYR A 12 51.23 162.56 REMARK 500 3 TYR A 12 52.06 169.04 REMARK 500 4 TYR A 12 58.54 160.60 REMARK 500 5 TYR A 12 59.27 166.97 REMARK 500 6 TYR A 12 45.02 173.42 REMARK 500 7 TYR A 12 52.08 170.21 REMARK 500 8 TYR A 12 51.48 168.11 REMARK 500 9 TYR A 12 50.84 -177.65 REMARK 500 10 TYR A 12 55.57 172.24 REMARK 500 11 TYR A 12 53.71 172.50 REMARK 500 12 TYR A 12 52.52 165.57 REMARK 500 13 TYR A 12 55.15 169.38 REMARK 500 14 LEU A 11 -70.48 -70.08 REMARK 500 14 TYR A 12 57.63 178.05 REMARK 500 15 TYR A 12 50.20 163.58 REMARK 500 16 TYR A 12 45.78 163.93 REMARK 500 17 TYR A 12 51.27 163.24 REMARK 500 18 TYR A 12 50.27 168.92 REMARK 500 19 TYR A 12 41.54 179.69 REMARK 500 20 TYR A 12 51.09 168.71 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 NH2 A 14 DBREF 2I28 A 1 13 UNP P69657 CXA1_CONBU 44 56 SEQRES 1 A 14 GLY CYS CYS SER THR PRO PRO CYS ALA VAL LEU TYR CYS SEQRES 2 A 14 NH2 HET NH2 A 14 3 HETNAM NH2 AMINO GROUP FORMUL 1 NH2 H2 N HELIX 1 1 THR A 5 VAL A 10 1 6 SSBOND 1 CYS A 2 CYS A 8 1555 1555 2.03 SSBOND 2 CYS A 3 CYS A 13 1555 1555 2.03 LINK C CYS A 13 N NH2 A 14 1555 1555 1.33 SITE 1 AC1 3 CYS A 8 TYR A 12 CYS A 13 CRYST1 1.000 1.000 1.000 90.00 90.00 90.00 P 1 1 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 1.000000 0.000000 0.000000 0.00000 SCALE2 0.000000 1.000000 0.000000 0.00000 SCALE3 0.000000 0.000000 1.000000 0.00000 ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL MASTER 92 0 1 1 0 0 1 6 0 0 0 2 END