Article
Transmembrane movement of the shaker K+ channel S4.
Neuron - 1 Feb 1996
Larsson H P, Baker O S, Dhillon D S, Isacoff E Y
Abstract excerpt
We have probed internal and external accessibility of S4 residues to the membrane-impermeant thiol reagent methanethiosulfonate-ethyltrimethlammonium (MTSET) in both open and closed, cysteine-substituted Shaker K+ channels. Our results indicate that S4 traverses the membrane with no more than 5 amino acids in the closed state, and that the distribution of buried residues changes when channels open. This change...
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