1k64

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[[Image:1k64.png|left|200px]]
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==NMR Structue of alpha-conotoxin EI==
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<StructureSection load='1k64' size='340' side='right' caption='[[1k64]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1k64]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1K64 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1K64 FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=HYP:4-HYDROXYPROLINE'>HYP</scene>, <scene name='pdbligand=NH2:AMINO+GROUP'>NH2</scene></td></tr>
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<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1plp|1plp]], [[1qs3|1qs3]], [[1dg2|1dg2]]</td></tr>
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<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1k64 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1k64 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1k64 RCSB], [http://www.ebi.ac.uk/pdbsum/1k64 PDBsum]</span></td></tr>
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<table>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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A high resolution structure of alpha-conotoxin EI has been determined by (1)H NMR spectroscopy and molecular modeling. alpha-Conotoxin EI has the same disulfide framework as alpha 4/7 conotoxins targeting neuronal nicotinic acetylcholine receptors but antagonizes the neuromuscular receptor as do the alpha 3/5 and alpha A conotoxins. The unique binding preference of alpha-conotoxin EI to the alpha(1)/delta subunit interface of Torpedo neuromuscular receptor makes it a valuable structural template for superposition of various alpha-conotoxins possessing distinct receptor subtype specificities. Structural comparison of alpha-conotoxin EI with the gamma-subunit favoring alpha-conotoxin GI suggests that the Torpedo delta-subunit preference of the former originates from its second loop. Superposition of three-dimensional structures of seven alpha-conotoxins reveals that the estimated size of the toxin-binding pocket in nicotinic acetylcholine receptor is approximately 20 A (height) x 20 A (width) x 15 A (thickness).
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{{STRUCTURE_1k64| PDB=1k64 | SCENE= }}
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Solution conformation of alpha-conotoxin EI, a neuromuscular toxin specific for the alpha 1/delta subunit interface of torpedo nicotinic acetylcholine receptor.,Park KH, Suk JE, Jacobsen R, Gray WR, McIntosh JM, Han KH J Biol Chem. 2001 Dec 28;276(52):49028-33. Epub 2001 Oct 18. PMID:11641403<ref>PMID:11641403</ref>
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===NMR Structue of alpha-conotoxin EI===
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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{{ABSTRACT_PUBMED_11641403}}
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== References ==
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<references/>
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==About this Structure==
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__TOC__
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[[1k64]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1K64 OCA].
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</StructureSection>
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==Reference==
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<ref group="xtra">PMID:011641403</ref><references group="xtra"/>
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[[Category: Gray, W R.]]
[[Category: Gray, W R.]]
[[Category: Han, K H.]]
[[Category: Han, K H.]]

Revision as of 05:42, 8 June 2014

NMR Structue of alpha-conotoxin EI

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