Evidence map›Paper›PMID 21624947›Full record

ArticleThe Journal of general physiology2011

An electrostatic potassium channel opener targeting the final voltage sensor transition.

Sara I Börjesson, Fredrik Elinder

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of general physiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
58citing papers in PubMed, 1 pooled it
2.4field-weighted citation impact, top 11% 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

58 citing papers in PubMed, 1 synthesis or guideline pooled it, 88 citations in OpenAlex.

  1. Polyunsaturated fatty acid supplementation for drug-resistant epilepsy.The Cochrane database of systematic reviews · 2016
    Pooled it
  2. A Historical Outline of Fluorescence Spectroscopy in Ion Channel Research.Advances in experimental medicine and biology · 2026
    Review
  3. Review
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Mechanistic insights into robust cardiac IbioRxiv : the preprint server for biology · 2023
    Article
  12. Article
  13. Article
  14. Nutrigenomics of Dietary Lipids.Antioxidants (Basel, Switzerland) · 2021
    Review
  15. Article
  16. Article
  17. Coupling stabilizers open KProceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  18. Article
  19. Article
  20. Article
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

2 authors at 1 institution in 1 country.

Sara I BörjessonDepartment of Clinical and Experimental Medicine, Division of Cell Biology, Linköping University, Sweden.
Fredrik Elinder
Linköping University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Free polyunsaturated fatty acids (PUFAs) modulate the voltage dependence of voltage-gated ion channels. As an important consequence thereof, PUFAs can suppress epileptic seizures and cardiac arrhythmia. However, molecular details for the interaction between PUFA and ion channels are not well understood. In this study, we have localized the site of action for PUFAs on the voltage-gated Shaker K channel by introducing positive charges on the channel surface, which potentiated the PUFA effect. Furthermore, we found that PUFA mainly affects the final voltage sensor movement, which is closely linked to channel opening, and that specific charges at the extracellular end of the voltage sensor are critical for the PUFA effect. Because different voltage-gated K channels have different charge profiles, this implies channel-specific PUFA effects. The identified site and the pharmacological mechanism will potentially be very useful in future drug design of small-molecule compounds specifically targeting neuronal and cardiac excitability.

Indexed as

Amino Acid SequenceAnimalsFatty Acids, UnsaturatedIon TransportMembrane PotentialsModels, MolecularMutationOocytesPotassium Channels, Voltage-GatedProtein ConformationProtein Structure, TertiaryStatic ElectricityXenopus laevisFatty Acids, UnsaturatedPotassium Channels, Voltage-Gated

Identifiers

PMID21624947
PMCPMC3105513
OpenAlexW2030036563

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.