Literature DB >> 14992691

Solution conformation of alpha-conotoxin GIC, a novel potent antagonist of alpha3beta2 nicotinic acetylcholine receptors.

Seung-Wook Chi1, Do-Hyoung Kim, Baldomero M Olivera, J Michael McIntosh, Kyou-Hoon Han.   

Abstract

Alpha-conotoxin GIC is a 16-residue peptide isolated from the venom of the cone snail Conus geographus. Alpha-conotoxin GIC potently blocks the alpha3beta2 subtype of human nicotinic acetylcholine receptor, showing a high selectivity for neuronal versus muscle subtype [McIntosh, Dowell, Watkins, Garrett, Yoshikami, and Olivera (2002) J. Biol. Chem. 277, 33610-33615]. We have now determined the three-dimensional solution structure of alpha-conotoxin GIC by NMR spectroscopy. The structure of alpha-conotoxin GIC is well defined with backbone and heavy atom root mean square deviations (residues 2-16) of 0.53 A and 0.96 A respectively. Structure and surface comparison of alpha-conotoxin GIC with the other alpha4/7 subfamily conotoxins reveals unique structural aspects of alpha-conotoxin GIC. In particular, the structural comparison between alpha-conotoxins GIC and MII indicates molecular features that may confer their similar receptor specificity profile, as well as those that provide the unique binding characteristics of alpha-conotoxin GIC.

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Year:  2004        PMID: 14992691      PMCID: PMC1224189          DOI: 10.1042/BJ20031792

Source DB:  PubMed          Journal:  Biochem J        ISSN: 0264-6021            Impact factor:   3.857


  44 in total

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Journal:  Biochemistry       Date:  1993-11-23       Impact factor: 3.162

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  8 in total

1.  Fast synaptic transmission in the goldfish CNS mediated by multiple nicotinic receptors.

Authors:  Charlotte L Grove; Theresa M Szabo; J Michael McIntosh; Samantha C Do; Robert F Waldeck; Donald S Faber
Journal:  J Physiol       Date:  2010-11-29       Impact factor: 5.182

2.  Characterization of a novel α-conotoxin TxID from Conus textile that potently blocks rat α3β4 nicotinic acetylcholine receptors.

Authors:  Sulan Luo; Dongting Zhangsun; Xiaopeng Zhu; Yong Wu; Yuanyan Hu; Sean Christensen; Peta J Harvey; Muharrem Akcan; David J Craik; J Michael McIntosh
Journal:  J Med Chem       Date:  2013-11-22       Impact factor: 7.446

3.  Structure-function elucidation of a new α-conotoxin, Lo1a, from Conus longurionis.

Authors:  Eline K M Lebbe; Steve Peigneur; Mohitosh Maiti; Prabha Devi; Samuthirapandian Ravichandran; Eveline Lescrinier; Chris Ulens; Etienne Waelkens; Lisette D'Souza; Piet Herdewijn; Jan Tytgat
Journal:  J Biol Chem       Date:  2014-02-24       Impact factor: 5.157

Review 4.  Alpha-conotoxins as pharmacological probes of nicotinic acetylcholine receptors.

Authors:  Layla Azam; J Michael McIntosh
Journal:  Acta Pharmacol Sin       Date:  2009-05-18       Impact factor: 6.150

5.  From crystal structure of α-conotoxin GIC in complex with Ac-AChBP to molecular determinants of its high selectivity for α3β2 nAChR.

Authors:  Bo Lin; Manyu Xu; Xiaopeng Zhu; Yong Wu; Xi Liu; Dongting Zhangsun; Yuanyan Hu; Shi-Hua Xiang; Igor E Kasheverov; Victor I Tsetlin; Xinquan Wang; Sulan Luo
Journal:  Sci Rep       Date:  2016-03-01       Impact factor: 4.379

Review 6.  Residues Responsible for the Selectivity of α-Conotoxins for Ac-AChBP or nAChRs.

Authors:  Bo Lin; Shihua Xiang; Mengsen Li
Journal:  Mar Drugs       Date:  2016-10-11       Impact factor: 5.118

7.  Crystal Structure of the Monomeric Extracellular Domain of α9 Nicotinic Receptor Subunit in Complex With α-Conotoxin RgIA: Molecular Dynamics Insights Into RgIA Binding to α9α10 Nicotinic Receptors.

Authors:  Marios Zouridakis; Athanasios Papakyriakou; Igor A Ivanov; Igor E Kasheverov; Victor Tsetlin; Socrates Tzartos; Petros Giastas
Journal:  Front Pharmacol       Date:  2019-05-01       Impact factor: 5.988

8.  Characterization of an α 4/7-Conotoxin LvIF from Conus lividus That Selectively Blocks α3β2 Nicotinic Acetylcholine Receptor.

Authors:  Man Guo; Jinpeng Yu; Xiaopeng Zhu; Dongting Zhangsun; Sulan Luo
Journal:  Mar Drugs       Date:  2021-07-17       Impact factor: 5.118

  8 in total

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