10 20 30 40 50 60 70 80 1G2G - Header ----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----| Asymmetric UnitHEADER TOXIN 19-OCT-00 1G2G
TITLE MINIMAL CONFORMATION OF THE ALPHA-CONOTOXIN IMI FOR THE TITLE 2 ALPHA7 NEURONAL NICOTINIC ACETYLCHOLINE RECEPTOR TITLE 3 RECOGNITION
COMPND MOL_ID: 1; COMPND 2 MOLECULE: ALPHA-CONOTOXIN IMI; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES
SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 OTHER_DETAILS: THE SOLID PHASE SYNTHESIS OF ALPHA- SOURCE 4 CONOTOXIN IMI WAS CARRIED OUT USING THE F-MOC CHEMISTRY. SOURCE 5 THE SEQUENCE OF THE PROTEIN IS NATURALLY FOUND IN THE SOURCE 6 VENOM OF CONUS IMPERIALIS (IMPERIAL CONE).
KEYWDS ALPHA-HELIX, 3-10 HELIX, TOXIN
EXPDTA SOLUTION NMR
NUMMDL 30
AUTHOR H.LAMTHANH,C.JEGOU-MATHERON,D.SERVENT,A.MENEZ,J.M.LANCELIN
REVDAT 2 24-FEB-09 1G2G 1 VERSN REVDAT 1 08-NOV-00 1G2G 0
JRNL AUTH H.LAMTHANH,C.JEGOU-MATHERON,D.SERVENT,A.MENEZ, JRNL AUTH 2 J.M.LANCELIN JRNL TITL MINIMAL CONFORMATION OF THE ALPHA-CONOTOXIN IMI JRNL TITL 2 FOR THE ALPHA7 NEURONAL NICOTINIC ACETYLCHOLINE JRNL TITL 3 RECEPTOR RECOGNITION: CORRELATED CD, NMR AND JRNL TITL 4 BINDING STUDIES. JRNL REF FEBS LETT. V. 454 293 1999 JRNL REFN ISSN 0014-5793 JRNL PMID 10431825 JRNL DOI 10.1016/S0014-5793(99)00831-5
REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH J.M.MCINTOSH,D.YOSHIKAMI,E.MAHE,D.B.NIELSEN, REMARK 1 AUTH 2 J.E.RIVIER,W.R.GRAY,B.M.OLIVERA REMARK 1 TITL A NICOTINIC ACETYLCHOLINE RECEPTOR LIGAND OF REMARK 1 TITL 2 UNIQUE SPECIFICITY, ALPHA-CONOTOXIN IMI REMARK 1 REF J.BIOL.CHEM. V. 269 16733 1994 REMARK 1 REFN ISSN 0021-9258 REMARK 1 REFERENCE 2 REMARK 1 AUTH D.SERVENT,H.LAMTHANH,S.ANTIL,D.BERTRAND, REMARK 1 AUTH 2 P.J.CORRINGER,J.P.CHANGEUX,A.MENEZ REMARK 1 TITL FUNCTIONAL DETERMINANTS BY WHICH SNAKE AND CONE REMARK 1 TITL 2 SNAIL TOXINS BLOCK THE ALPHA 7 NEURONAL NICOTINIC REMARK 1 TITL 3 ACETYLCHOLINE RECEPTORS REMARK 1 REF J.PHYSIOL.(PARIS) V. 92 107 1998 REMARK 1 REFN ISSN 0021-7948 REMARK 1 DOI 10.1016/S0928-4257(98)80146-0 REMARK 1 REFERENCE 3 REMARK 1 AUTH P.A.QUIRAM,S.M.SINE REMARK 1 TITL IDENTIFICATION OF RESIDUES IN THE NEURONAL ALPHA7 REMARK 1 TITL 2 ACETYLCHOLINE RECEPTOR THAT CONFER SELECTIVITY FOR REMARK 1 TITL 3 CONOTOXIN IMI REMARK 1 REF J.BIOL.CHEM. V. 273 11001 1998 REMARK 1 REFN ISSN 0021-9258 REMARK 1 DOI 10.1074/JBC.273.18.11001 REMARK 1 REFERENCE 4 REMARK 1 AUTH I.V.MASLENNIKOV,Z.O.SHENKAREV,M.N.ZHMAK,V.T.IVANOV, REMARK 1 AUTH 2 C.METHFESSEL,V.I.TSETLIN,A.S.ARSENIEV REMARK 1 TITL NMR SPATIAL STRUCTURE OF ALPHA-CONOTOXIN IMI REMARK 1 TITL 2 REVEALS A COMMON SCAFFOLD IN SNAIL AND SNAKE REMARK 1 TITL 3 TOXINS RECOGNIZING NEURONAL NICOTINIC REMARK 1 TITL 4 ACETYLCHOLINE RECEPTORS REMARK 1 REF FEBS LETT. V. 444 275 1999 REMARK 1 REFN ISSN 0014-5793 REMARK 1 DOI 10.1016/S0014-5793(99)00069-1 REMARK 1 REFERENCE 5 REMARK 1 AUTH J.P.ROGERS,P.LUGINBUHL,G.S.SHEN,R.T.MCCABE, REMARK 1 AUTH 2 R.C.STEVENS,D.E.WEMMER REMARK 1 TITL NMR SOLUTION STRUCTURE OF ALPHA-CONOTOXIN IMI AND REMARK 1 TITL 2 COMPARISON TO OTHER CONOTOXINS SPECIFIC FOR REMARK 1 TITL 3 NEURONAL NICOTINIC ACETYLCHOLINE RECEPTORS REMARK 1 REF BIOCHEMISTRY V. 38 3874 1999 REMARK 1 REFN ISSN 0006-2960 REMARK 1 DOI 10.1021/BI9826254
REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE.
REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 3.851 REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL
REMARK 4 REMARK 4 1G2G COMPLIES WITH FORMAT V. 3.15, 01-DEC-08
REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 20-OCT-00. REMARK 100 THE RCSB ID CODE IS RCSB012150.
REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 278 REMARK 210 PH : 5.8 REMARK 210 IONIC STRENGTH : 0.1 REMARK 210 PRESSURE : AMBIENT REMARK 210 SAMPLE CONTENTS : 5-6 MM ALPHA-IMI; 90 % H2O, REMARK 210 10 % D2O; 0.1 M POTASSIUM REMARK 210 PHOSPHATE BUFFER PH 5.8 REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : NOESY, DQF-COSY REMARK 210 SPECTROMETER FIELD STRENGTH : 500 MHZ REMARK 210 SPECTROMETER MODEL : DRX REMARK 210 SPECTROMETER MANUFACTURER : BRUKER REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : XWINNMR 2.5, GIFA 4.22 REMARK 210 METHOD USED : THE STRUCTURES WERE GENERATED REMARK 210 USING THE FORCE FIELDS REMARK 210 PARALLHDG.PRO AND CHARMM22 OF REMARK 210 X-PLOR. REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : 60 REMARK 210 CONFORMERS, NUMBER SUBMITTED : 30 REMARK 210 CONFORMERS, SELECTION CRITERIA : STRUCTURES WITH THE LEAST REMARK 210 RESTRAINT VIOLATIONS, REMARK 210 STRUCTURES WITH THE LOWEST REMARK 210 ENERGY REMARK 210 REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : 7 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 5 CYS A 2 -70.51 -84.70 REMARK 500 12 CYS A 2 -62.40 -90.72 REMARK 500 18 CYS A 3 24.90 -78.29 REMARK 500 22 CYS A 3 3.20 -67.58 REMARK 500 23 CYS A 3 2.58 -69.56 REMARK 500 27 ALA A 9 8.68 -68.32 REMARK 500 30 CYS A 2 -76.28 -87.74 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 13
DBREF 1G2G A 1 12 UNP P50983 CXA1_CONIM 1 12
SEQRES 1 A 13 GLY CYS CYS SER ASP PRO ARG CYS ALA TRP ARG CYS NH2
HET NH2 A 13 3
HETNAM NH2 AMINO GROUP
FORMUL 1 NH2 H2 N
HELIX 1 1 ASP A 5 TRP A 10 1 6
SSBOND 1 CYS A 2 CYS A 8 1555 1555 2.04 SSBOND 2 CYS A 3 CYS A 12 1555 1555 2.03
LINK C CYS A 12 N NH2 A 13 1555 1555 1.36
SITE 1 AC1 2 ALA A 9 CYS A 12
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