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. 1999 Oct 1;114(4):551–560. doi: 10.1085/jgp.114.4.551

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© 1999 The Rockefeller University Press

This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication date (see http://www.rupress.org/terms). After six months it is available under a Creative Commons License (Attribution–Noncommercial–Share Alike 4.0 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/4.0/).

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TEA blockade of KcsA. (Top) KcsA channels were recorded at 200 mV with indicated TEA concentrations added to the 100-mM K⁺ solutions; these data were filtered at 1 kHz. (Bottom) Open-channel current, i, normalized to the value without TEA, i₀, is shown with single-site inhibition curves, with K _i = 3.2 and 22 mM for cis and trans, respectively.

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