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. 1987 Jul;27(1):1-6.
doi: 10.1016/0301-4622(87)80041-8.

The interaction of Cl- with a gramicidin-like channel

S S Sung, P C Jordan

The interaction of Cl- with a gramicidin-like channel

S S Sung et al. Biophys Chem. 1987 Jul.

Abstract

Molecular dynamics simulations have been used to study the interaction of Cl- with a gramicidin-like channel. The results suggest that there is a high-energy barrier at the entrance of the channel, which would correspond to a permeability 10(-9)-times that of a cation of the same size. This could account for the cationic selectivity of the gramicidin channel and indicates that valence selectivity is kinetically controlled.

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