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Engineering a potent and specific blocker of voltage-gated potassium channel Kv1.3, a target for autoimmune diseases

Chen, Rong; Chung, Shin-Ho


A polypeptide toxin extracted from scorpion venom, OSK1, is modified such that its potency is drastically enhanced in blocking one class of voltage-gated potassium channels, Kv1.3, which is a pharmacological target for immunosuppressive therapy. The bound complex of Kv1.3 and OSK1 reveals that one lysine residue of the toxin is in the proximity of another lysine residue on the external vestibule of the channel, just outside of the selectivity filter. This unfavorable electrostatic interaction...[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Journal article
Source: Biochemistry
DOI: 10.1021/bi201811j


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