Evidence map›Paper›PMID 24327560›Full record

ArticleeLife2013

Hydrogen bonds as molecular timers for slow inactivation in voltage-gated potassium channels.

Stephan A Pless, Jason D Galpin, Ana P Niciforovic, Harley T Kurata, Christopher A Ahern

Open access · goldAbstract read
In one paragraph

Article in eLife, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed
2.1field-weighted citation impact, top 13% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

48 citing papers in PubMed, 77 citations in OpenAlex.

  1. Review
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  4. Structure of the human TWIK-2 potassium channel and its inhibition by pimozide.Proceedings of the National Academy of Sciences of the United States of America · 2025
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  19. Rearrangement of a unique Kv1.3 selectivity filter conformation upon binding of a drug.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 2 countries.

Stephan A PlessDepartment of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, Canada.
Jason D Galpin
Ana P Niciforovic
Harley T Kurata
Christopher A Ahern
University of British Columbia · CAUniversity of Iowa · US

Funding

Chemical Biology of Voltage-Gated Sodium and Potassium ChannelsR01GM106569 · NIGMS · UNIVERSITY OF IOWA · PI AHERN, CHRISTOPHER A · 2013 to 2022
$2.7M
CIHR MOP-56858NIGMS NIH HHS GM106569NIGMS NIH HHS R01 GM106569
6 · The paper itself

Abstract

Voltage-gated potassium (Kv) channels enable potassium efflux and membrane repolarization in excitable tissues. Many Kv channels undergo a progressive loss of ion conductance in the presence of a prolonged voltage stimulus, termed slow inactivation, but the atomic determinants that regulate the kinetics of this process remain obscure. Using a combination of synthetic amino acid analogs and concatenated channel subunits we establish two H-bonds near the extracellular surface of the channel that endow Kv channels with a mechanism to time the entry into slow inactivation: an intra-subunit H-bond between Asp447 and Trp434 and an inter-subunit H-bond connecting Tyr445 to Thr439. Breaking of either interaction triggers slow inactivation by means of a local disruption in the selectivity filter, while severing the Tyr445-Thr439 H-bond is likely to communicate this conformational change to the adjacent subunit(s). DOI: http://dx.doi.org/10.7554/eLife.01289.001.

Indexed as

Hydrogen BondingIon Channel GatingAmino Acid SequenceMolecular Sequence DataPotassium ChannelsSequence Homology, Amino AcidPotassium Channelschannel inactivationhydrogen bondsion channel gatingmolecular timersneuroscienceunnatural amino acids

Identifiers

PMID24327560
PMCPMC3852034
OpenAlexW2168034088

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.