Block of Shaker K+ channels by ĸ-conotoxin PVIIA is state dependent

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Publication Type Journal Article
School or College College of Science
Department Biology
Creator Olivera, Baldomero M.
Other Author Terlau, Heinrich; Boccaccio, Anna; Conti, Franco
Title Block of Shaker K+ channels by ĸ-conotoxin PVIIA is state dependent
Date 1999
Description ĸ-conotoxin PVIIA is the first conotoxin known to interact with voltage-gated potassium channels by inhibiting Shaker-mediated currents. We studied the mechanism of inhibition and concluded that PVIIA blocks the ion pore with a 1:1 stoichiometry and that binding to open or closed channels is very different. Open-channel properties are revealed by relaxations of partial block during step depolarizations, whereas double-pulse protocols characterize the slower reequilibration of closed-channel binding.
Type Text
Publisher Rockefeller University Press
First Page 125
Last Page 140
Subject Conotoxins; k-conotoxin PVIIA; Potassium channel blockers; Shaker K+ channels
Subject LCSH Conus; Marine toxins; Potassium channels; Potassium -- Antagonists
Language eng
Bibliographic Citation Terlau, H., Boccaccio, A., Olivera, B. M., & Conti, F. (1999). Block of Shaker K+ channels by ĸ-conotoxin PVIIA is state dependent. Journal of General Physiology, 114, 125-40.
Rights Management (c) Terlau, H., Boccaccio, A., Olivera, B. M., & Conti, F., 1999. Originally published in Journal of General Physiology, 114, 125-40. http://creativecommons.org/licenses/by-nc-sa/3.0/
Format Medium application/pdf
Format Extent 372,490 bytes
Identifier ir-main,8381
ARK ark:/87278/s6xh08gn
Setname ir_uspace
ID 704678
Reference URL https://collections.lib.utah.edu/ark:/87278/s6xh08gn
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