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Cited by 563

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Mutations Affecting Tea Blockade and Ion Permeation in Voltage-activated K + Channels

MacKinnon, Roderick, Yellen, Gary·1990·Science

Abstract

Voltage-dependent ion channels are responsible for electrical signaling in neurons and other cells. The main classes of voltage-dependent channels (sodium-, calcium-, and potassium-selective channels) have closely related molecular structures. For one member of this superfamily, the transiently voltage-activated Shaker H4 potassium channel, specific amino acid residues have now been identified that affect channel blockade by the small ion tetraethylammonium, as well as the conduction of ions through the pore. Furthermore, variation at one of these amino acid positions among naturally occurring potassium channels may account for most of their differences in sensitivity to tetraethylammonium.

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Metadata

Authors
MacKinnon, R., & Yellen, G.
Venue
Science
Published
1990-10-12
Volume
250
Issue
4978
Pages
276-279
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2025884619
Cited by
563
References
1
FWCI
16.61
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Mutations Affecting Tea Blockade and Ion Permeation in Voltage-activated K + Channels. https://app.cochat.ai/papers/10.1126/science.2218530
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MacKinnon, R., & Yellen, G. (1990). Mutations Affecting Tea Blockade and Ion Permeation in Voltage-activated K + Channels. Science. https://doi.org/10.1126/science.2218530

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.