1ZLC - Header Asymmetric Unit

HEADER TOXIN 05-MAY-05 1ZLC

TITLE SOLUTION CONFORMATION OF ALPHA-CONOTOXIN PIA

COMPND MOL_ID: 1; COMPND 2 MOLECULE: ALPHA-CONOTOXIN PIA; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: FRAGMENT; COMPND 5 ENGINEERED: YES

SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 OTHER_DETAILS: THIS SEQUENCE OCCURS NATURALLY IN CONUS SOURCE 4 PURPURASCENS.

KEYWDS ALPHA-HELIX, BETA-TURN, TWO DISULFIDE BONDS, C-TERMINAL KEYWDS 2 AMIDATION, TOXIN

EXPDTA SOLUTION NMR

NUMMDL 20

AUTHOR S.-W.CHI,S.-H.LEE,D.-H.KIM,J.-S.KIM,B.M.OLIVERA, AUTHOR 2 J.M.MCINTOSH,K.-H.HAN

REVDAT 2 24-FEB-09 1ZLC 1 VERSN REVDAT 1 02-MAY-06 1ZLC 0

JRNL AUTH S.-W.CHI,S.-H.LEE,D.-H.KIM,J.-S.KIM,B.M.OLIVERA, JRNL AUTH 2 J.M.MCINTOSH,K.-H.HAN JRNL TITL SOLUTION STRUCTURE OF ALPHA-CONOTOXIN PIA, A NOVEL JRNL TITL 2 ANTAGONIST OF ALPHA6 SUBUNIT CONTAINING NICOTINIC JRNL TITL 3 ACETYLCHOLINE RECEPTORS JRNL REF BIOCHEM.BIOPHYS.RES.COMMUN. V. 338 1990 2005 JRNL REFN ISSN 0006-291X JRNL PMID 16289101 JRNL DOI 10.1016/J.BBRC.2005.10.176

REMARK 1

REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE.

REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 1.1 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 1ZLC COMPLIES WITH FORMAT V. 3.15, 01-DEC-08

REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 11-MAY-05. REMARK 100 THE RCSB ID CODE IS RCSB032852.

REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 283; 293 REMARK 210 PH : 3.92; 3.92 REMARK 210 IONIC STRENGTH : 0; 0 REMARK 210 PRESSURE : 1ATM; 1ATM REMARK 210 SAMPLE CONTENTS : 10MM ALPHA-CONOTOXIN PIA 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 6,1B, FELIX 98.0 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 : 5 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 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 PRO A 15 30.33 -89.11 REMARK 500 2 PRO A 8 1.34 -59.57 REMARK 500 4 ASN A 14 58.29 -140.04 REMARK 500 9 ASN A 14 58.04 -140.13 REMARK 500 12 ASP A 2 174.16 -59.85 REMARK 500 15 PRO A 15 38.58 -87.89 REMARK 500 18 PRO A 15 33.53 -89.51 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 19

DBREF 1ZLC A 1 18 UNP P69658 CXA1_CONPU 22 39

SEQRES 1 A 19 ARG ASP PRO CYS CYS SER ASN PRO VAL CYS THR VAL HIS SEQRES 2 A 19 ASN PRO GLN ILE CYS NH2

HET NH2 A 19 3

HETNAM NH2 AMINO GROUP

FORMUL 1 NH2 H2 N

HELIX 1 1 VAL A 9 ASN A 14 1 6

SSBOND 1 CYS A 4 CYS A 10 1555 1555 2.03 SSBOND 2 CYS A 5 CYS A 18 1555 1555 2.03

LINK C CYS A 18 N NH2 A 19 1555 1555 1.33

SITE 1 AC1 1 CYS A 18

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