HEADER TOXIN 15-MAR-06 2GCZ TITLE SOLUTION STRUCTURE OF ALPHA-CONOTOXIN OMIA COMPND MOL_ID: 1; COMPND 2 MOLECULE: ALPHA-CONOTOXIN OMIA; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: RESIDUES 1-17; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 ORGANISM_SCIENTIFIC: CONUS OMARIA; SOURCE 4 ORGANISM_COMMON: OMARIA CONE; SOURCE 5 ORGANISM_TAXID: 89429; SOURCE 6 OTHER_DETAILS: THIS SEQUENCE OCCURS NATURALLY IN CONUS OMARIA. KEYWDS ALPHA-HELIX, BETA-TURN, TWO DISULFIDE BONDS, C-TERMINAL AMIDATION, KEYWDS 2 TOXIN EXPDTA SOLUTION NMR NUMMDL 20 AUTHOR S.-W.CHI,D.-H.KIM,B.M.OLIVERA,J.M.MCINTOSH,K.-H.HAN REVDAT 3 24-JUN-20 2GCZ 1 COMPND SOURCE REMARK DBREF REVDAT 3 2 1 SEQADV LINK REVDAT 2 24-FEB-09 2GCZ 1 VERSN REVDAT 1 25-JUL-06 2GCZ 0 JRNL AUTH S.-W.CHI,D.-H.KIM,B.M.OLIVERA,J.M.MCINTOSH,K.-H.HAN JRNL TITL SOLUTION CONFORMATION OF A NEURONAL NICOTINIC ACETYLCHOLINE JRNL TITL 2 RECEPTOR ANTAGONIST ALPHA-CONOTOXIN OMIA THAT DISCRIMINATES JRNL TITL 3 ALPHA3 VS. ALPHA6 NACHR SUBTYPES JRNL REF BIOCHEM.BIOPHYS.RES.COMMUN. V. 345 248 2006 JRNL REFN ISSN 0006-291X JRNL PMID 16678128 JRNL DOI 10.1016/J.BBRC.2006.04.099 REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : VNMR 6.1B, CNS 1.1 REMARK 3 AUTHORS : VARIAN (VNMR), REMARK 3 BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE-KUNSTLEVE,JIANG,KUSZEWSKI, REMARK 3 NILGES, PANNU,READ,RICE,SIMONSON,WARREN (CNS) REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 2GCZ COMPLIES WITH FORMAT V. 3.15, 01-DEC-08 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 16-MAR-06. REMARK 100 THE DEPOSITION ID IS D_1000036968. REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 298; 288 REMARK 210 PH : 4.1; 4.1 REMARK 210 IONIC STRENGTH : 0; 0 REMARK 210 PRESSURE : 1 ATM; 1 ATM REMARK 210 SAMPLE CONTENTS : 4.8MM ALPHA-CONOTOXIN OMIA; 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 : NMRVIEW 5.0.4 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: THIS STRUCTURE WAS DETERMINED USING STANDARD 2D REMARK 210 HOMONUCLEAR TECHNIQUES. 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 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: MONOMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: A REMARK 350 BIOMT1 1 1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT2 1 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 1 0.000000 0.000000 1.000000 0.00000 REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS REMARK 500 REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT. REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI DISTANCE 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 1 ASN A 12 78.93 -119.68 REMARK 500 2 ASN A 12 77.29 -119.40 REMARK 500 5 CYS A 16 -67.98 -143.83 REMARK 500 6 CYS A 2 50.41 -115.57 REMARK 500 7 CYS A 2 53.13 39.75 REMARK 500 7 ASN A 12 77.72 -118.09 REMARK 500 8 ASN A 12 77.50 -119.56 REMARK 500 8 CYS A 16 -74.58 -116.02 REMARK 500 11 ASN A 12 78.70 -115.01 REMARK 500 11 CYS A 16 -36.09 -140.69 REMARK 500 12 CYS A 2 40.08 -147.73 REMARK 500 12 CYS A 3 5.15 -67.77 REMARK 500 14 CYS A 2 50.94 39.26 REMARK 500 18 CYS A 2 33.41 -140.81 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 18 DBREF 2GCZ A 1 17 UNP P0C1R7 CA1A_CONOM 1 17 SEQADV 2GCZ NH2 A 18 UNP P0C1R7 AMIDATION SEQRES 1 A 18 GLY CYS CYS SER HIS PRO ALA CYS ASN VAL ASN ASN PRO SEQRES 2 A 18 HIS ILE CYS GLY NH2 HET NH2 A 18 3 HETNAM NH2 AMINO GROUP FORMUL 1 NH2 H2 N HELIX 1 1 ALA A 7 ASN A 12 1 6 SSBOND 1 CYS A 2 CYS A 8 1555 1555 2.03 SSBOND 2 CYS A 3 CYS A 16 1555 1555 2.03 LINK C GLY A 17 N NH2 A 18 1555 1555 1.32 SITE 1 AC1 2 PRO A 13 GLY A 17 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 MODEL 1