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Cited by 438

The DOI matches its Crossref record; 23 of the 23 references it cites were found in a registry or an index.

A new family of outwardly rectifying potassium channel proteins with two pore domains in tandem

Open access
Ketchum, Karen A., Joiner, William J., Sellers, Andrew J., Kaczmarek, Leonard K., Goldstein, Steve A. N.·1995·Nature

Abstract

POTASSIUM channels catalyse the permeation of K+ ions across cellular membranes and are identified by a common structural motif, a highly conserved signature sequence of eight amino acids in the P domain of each channel's pore-forming α-subunit1,2. Here we describe a novel K+ channel (TOK1) from Saccharomyces cerevisiae that contains two P domains within one continuous poly-peptide. Xenopus laevis oocytes expressing the channel exhibit a unique, outwardly rectifying, K+-selective current. The channel is permeable to outward flow of ions at membrane potentials above the K+ equilibrium potential; its conduction–voltage relationship is thus sensitive to extracellular K+ ion concentration. In excised membrane patches, external divalent cations block the channel in a voltage-dependent manner, and their removal in this configuration allows inward channel current. These attributes are similar to those described for inwardly rectifying K+ channels3,4, but in the opposite direction, a previously unrecognized channel behaviour. Our results identify a new class of K+ channel which is distinctive in both its primary structure and functional properties. Structural homo-logues of the channel are present in the genome of Caenorhabditis elegans.

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Metadata

Authors
Ketchum, K. A., Joiner, W. J., Sellers, A. J., Kaczmarek, L. K., & Goldstein, S. A. N.
Venue
Nature
Published
1995-08
Volume
376
Issue
6542
Pages
690-695
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2087787002
Cited by
438
References
23
FWCI
9.00
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: A new family of outwardly rectifying potassium channel proteins with two pore domains in tandem. https://app.cochat.ai/papers/10.1038/376690a0
The paper
Ketchum, K. A., Joiner, W. J., Sellers, A. J., Kaczmarek, L. K., & Goldstein, S. A. N. (1995). A new family of outwardly rectifying potassium channel proteins with two pore domains in tandem. Nature. https://doi.org/10.1038/376690a0

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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

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.