Evidence map›Paper›PMID 33164746›Full record

ArticleeLife2020

Control of Slc7a5 sensitivity by the voltage-sensing domain of Kv1 channels.

Shawn M Lamothe, Nazlee Sharmin, Grace Silver, Motoyasu Satou, Yubin Hao, Toru Tateno, Victoria A Baronas, Harley T Kurata

Open access · goldAbstract read
In one paragraph

Article in eLife, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
0.4field-weighted citation impact, top 39% 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

7 citing papers in PubMed, 10 citations in OpenAlex.

  1. Competitive modulation of KFASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2024
    Article
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Putative roles of SLC7A5 (LAT1) transporter in pain.Neurobiology of pain (Cambridge, Mass.)
    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

8 authors at 1 institution in 2 countries.

Shawn M Lamothe *Department of Pharmacology, Alberta Diabetes Institute, University of Alberta, Edmonton, Canada.ORCID 0000-0001-8722-2631
Nazlee Sharmin *School of Dentistry, Faculty of Medicine and Dentistry, University of Alberta, School of Dentistry, Edmonton Clinic Health Academy (ECHA), Edmonton, Canada.
Grace SilverDepartment of Pharmacology, Alberta Diabetes Institute, University of Alberta, Edmonton, Canada.
Motoyasu SatouDepartment of Biochemistry, Dokkyo Medical University School of Medicine, Tochigi, Japan.
Yubin HaoDepartment of Pharmacology, Alberta Diabetes Institute, University of Alberta, Edmonton, Canada.
Toru TatenoDepartment of Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada.
Victoria A BaronasDepartment of Pharmacology, Alberta Diabetes Institute, University of Alberta, Edmonton, Canada.
Harley T KurataDepartment of Pharmacology, Alberta Diabetes Institute, University of Alberta, Edmonton, Canada.ORCID 0000-0003-4357-4189
University of Alberta · CA

Funding

CIHR
6 · The paper itself

Abstract

Many voltage-dependent ion channels are regulated by accessory proteins. We recently reported powerful regulation of Kv1.2 potassium channels by the amino acid transporter Slc7a5. In this study, we report that Kv1.1 channels are also regulated by Slc7a5, albeit with different functional outcomes. In heterologous expression systems, Kv1.1 exhibits prominent current enhancement ('disinhibition') with holding potentials more negative than -120 mV. Knockdown of endogenous Slc7a5 leads to larger Kv1.1 currents and strongly attenuates the disinhibition effect, suggesting that Slc7a5 regulation of Kv1.1 involves channel inhibition that can be reversed by supraphysiological hyperpolarizing voltages. We investigated chimeric combinations of Kv1.1 and Kv1.2, demonstrating that exchange of the voltage-sensing domain controls the sensitivity and response to Slc7a5, and localize a specific position in S1 with prominent effects on Slc7a5 sensitivity. Overall, our study highlights multiple Slc7a5-sensitive Kv1 subunits, and identifies the voltage-sensing domain as a determinant of Slc7a5 modulation of Kv1 channels.

Indexed as

AnimalsCell LineElectrophysiologyFibroblastsGene Expression RegulationGene Knockdown TechniquesHumansIon Channel GatingKv1.1 Potassium ChannelLarge Neutral Amino Acid-Transporter 1MiceKv1.1 Potassium ChannelLarge Neutral Amino Acid-Transporter 1SLC7A5 protein, humanSlc7a5 protein, mouseKv1.1Kv1.2molecular biophysicsneurosciencenonepotassium channelSlc7a5structural biologyvoltage-dependent gating

Identifiers

PMID33164746
PMCPMC7690953
OpenAlexW3102349308

What OpenQuestion holds

Textmetadata
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.