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Binding Modes of μ-Conotoxin to the Bacterial Sodium Channel (NaVAb)

Chen, Rong; Chung, Shin-Ho


Polypeptide toxins isolated from the venom of cone snails, known as μ-conotoxins, block voltage-gated sodium channels by physically occluding the ion-conducting pathway. Using molecular dynamics, we show that one subtype of μ-conotoxins, PIIIA, effectively blocks the bacterial voltage-gated sodium channel Na(V)Ab, whose crystal structure has recently been elucidated. The spherically shaped toxin, carrying a net charge of +6 e with six basic residues protruding from its surface, is attracted by...[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Journal article
Source: Biophysical Journal
DOI: 10.1016/j.bpj.2011.12.041


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