期刊
CHANNELS
卷 2, 期 6, 页码 407-412出版社
TAYLOR & FRANCIS INC
DOI: 10.4161/chan.2.6.7429
关键词
tetrodotoxin; TTX; voltage-gated sodium channel; Na-V; Na+; garter snake; puffer fish
Tetrodotoxin (TTX) is a potent toxin that specifically binds to voltage gated sodium channels. TTX binding physically blocks the flow of sodium ions through the channel, thereby preventing action potential (AP) generation and propagation. TTX has different binding affinities for different sodium channel isoforms. These differences are imparted by amino acid substitutions. Such substitutions confer TTX resistance to a variety of species. Tetrodotoxin resistance, however, may come at a cost to performance caused by changes in the biophysical properties and/or ion selectivity of the TTX resistant sodium channels. We here review the properties of sodium channels and their interaction with TTX, and look at some special examples of TTX resistant channels wherein the benefit of toxin resistance may be offset by other behavioral costs.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据