4ez1: Difference between revisions
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{{STRUCTURE_4ez1| PDB=4ez1 | SCENE= }} | |||
===Crystal structure of acetylcholine binding protein (AChBP) from Aplysia Californica in complex with alpha-conotoxin BuIA=== | |||
==Function== | |||
[[http://www.uniprot.org/uniprot/CA1A_CONBU CA1A_CONBU]] Alpha-conotoxins bind to the nicotinic acetylcholine receptors (nAChR) and inhibit them. This peptide potently blocks numerous mammalian nAChR subtypes (alpha-6 or -3/beta-2 or -3 > alpha-6 or-3/beta-4 > alpha-3/beta-2 > alpha-3/beta-4 > alpha-4/beta-4 = alpha-2/beta-4 > alpha-7 > alpha-2/beta-2 >> alpha-4/beta-2). Recovery from toxin block is markedly slower for beta-4 versus beta-2 subunit-containing nAChRs. Thus, it represents a novel probe for distinguishing between beta-2 and beta-4-containing nAChRs. | |||
==About this Structure== | |||
[[4ez1]] is a 10 chain structure with sequence from [http://en.wikipedia.org/wiki/Aplysia_californica Aplysia californica]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4EZ1 OCA]. | |||
[[Category: Aplysia californica]] | |||
[[Category: Ho, K.]] | |||
[[Category: Kim, C.]] | |||
[[Category: McIntosh, J M.]] | |||
[[Category: Reger, A S.]] | |||
[[Category: Sankaran, B.]] | |||
[[Category: Talley, T T.]] | |||
[[Category: Taylor, P.]] | |||
[[Category: Choline binding protein-toxin complex]] | |||
Revision as of 07:49, 8 May 2013
Crystal structure of acetylcholine binding protein (AChBP) from Aplysia Californica in complex with alpha-conotoxin BuIA
Function
[CA1A_CONBU] Alpha-conotoxins bind to the nicotinic acetylcholine receptors (nAChR) and inhibit them. This peptide potently blocks numerous mammalian nAChR subtypes (alpha-6 or -3/beta-2 or -3 > alpha-6 or-3/beta-4 > alpha-3/beta-2 > alpha-3/beta-4 > alpha-4/beta-4 = alpha-2/beta-4 > alpha-7 > alpha-2/beta-2 >> alpha-4/beta-2). Recovery from toxin block is markedly slower for beta-4 versus beta-2 subunit-containing nAChRs. Thus, it represents a novel probe for distinguishing between beta-2 and beta-4-containing nAChRs.
About this Structure
4ez1 is a 10 chain structure with sequence from Aplysia californica. Full crystallographic information is available from OCA.