Cited by 1,208Ion channel regulation and functionPancreatic function and diabetesIon Transport and Channel Regulation

The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.

Intracellular ATP directly blocks K+ channels in pancreatic B-cells

Abstract

It is known that glucose-induced depolarization of pancreatic B-cells is due to reduced membrane K+-permeability and is coupled to an increase in the rate of glycolysis, but there has been no direct evidence linking specific metabolic processes or products to the closing of membrane K+ channels. During patch-clamp studies of proton inhibition of Ca2+-activated K+ channels [GK(Ca)] in B-cells, we identified a second K+-selective channel which is rapidly and reversibly inhibited by ATP applied to the cytoplasmic surface of the membrane. This channel is spontaneously active in excised patches and frequently coexists with GK(Ca) channels yet is insensitive to membrane potential and to intracellular free Ca2+ and pH. Blocking of the channel is ATP-specific and appears not to require metabolism of the ATP. This ATP-sensitive K+ channel [GK(ATP)] may be a link between metabolism and membrane K+-permeability in pancreatic B-cells.

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Research works printed but not linked: 22

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Metadata

Authors
Cook, D. L., & Hales, N.
Affiliations
United States Department of Veterans Affairs (US)
Venue
Nature
Published
1984-09
Volume
311
Issue
5983
Pages
271-273
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W1985770721
Cited by
1,208
References
24
Citations by year
2026: 11 · 2025: 16 · 2024: 12 · 2023: 22 · 2022: 14 · 2021: 21 · 2020: 12 · 2019: 19 · 2018: 13 · 2017: 9 · 2016: 15 · 2015: 21 · 2014: 34 · 2013: 14 · 2012: 29
FWCI
13.20
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ion channel regulation and function
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Pancreatic function and diabetes
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ion Transport and Channel Regulation
Keywords
ATP-sensitive potassium channels, pancreatic beta cells, intracellular ATP, potassium channel inhibition, glycolysis, proton inhibition, calcium-activated potassium channels
MeSH terms
Adenosine Triphosphate, Animals, Cell Membrane Permeability, Cells, Cultured, Cytoplasm, Electric Conductivity, Ion Channels, Islets of Langerhans, Potassium, Rats

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