Evidence map›Paper›PMID 27022192›Full record

ArticleThe Journal of general physiology2016

The single transmembrane segment determines the modulatory function of the BK channel auxiliary γ subunit.

Qin Li, Xin Guan, Karen Yen, Jiyuan Zhang, Jiusheng Yan

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of general physiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.0field-weighted citation impact, top 22% 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

12 citing papers in PubMed, 25 citations in OpenAlex.

  1. Article
  2. Tuning the gate and the gear: The LRRC26 (γ1) subunit modulates intrinsic gating and voltage-sensor coupling of the BK channel.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  3. Tuning the gate and the gear: The LRRC26 (bioRxiv : the preprint server for biology · 2025
    Article
  4. Article
  5. E-cigarette aerosols of propylene glycol impair BK channel activity and parameters of mucociliary function.American journal of physiology. Lung cellular and molecular physiology · 2023
    Article
  6. Review
  7. Coronary Large Conductance CaFrontiers in physiology · 2021
    Review
  8. LINGO1 is a regulatory subunit of large conductance, CaProceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  9. Regulatory γ1 subunits defy symmetry in functional modulation of BK channels.Proceedings of the National Academy of Sciences of the United States of America · 2018
    Article
  10. Article
  11. Article
  12. 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 1 institution in 1 country.

Qin LiDepartment of Anesthesiology and Perioperative Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030.
Xin GuanDepartment of Anesthesiology and Perioperative Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030.
Karen YenDepartment of Anesthesiology and Perioperative Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030.
Jiyuan ZhangDepartment of Anesthesiology and Perioperative Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030.
Jiusheng YanDepartment of Anesthesiology and Perioperative Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030 jyan1@mdanderson.org.
The University of Texas MD Anderson Cancer Center · US

Funding

BK channel regulation by auxiliary LRR proteinsR01NS078152 · NINDS · UNIVERSITY OF TX MD ANDERSON CAN CTR · PI YAN, JIUSHENG · 2012 to 2022
$3.5M
Delineation of a LRR family of BK channel auxiliary subunitsR21NS075118 · NINDS · UNIVERSITY OF TX MD ANDERSON CAN CTR · PI YAN, JIUSHENG · 2011 to 2012
$415k
NINDS NIH HHS NS075118NINDS NIH HHS NS078152NINDS NIH HHS R01 NS078152NINDS NIH HHS R21 NS075118
6 · The paper itself

Abstract

The large-conductance, calcium-activated potassium (BK) channels consist of the pore-forming, voltage- and Ca(2+)-sensing α subunits (BKα) and the tissue-specific auxiliary β and γ subunits. The BK channel γ1 subunit is a leucine-rich repeat (LRR)-containing membrane protein that potently facilitates BK channel activation in many tissues and cell types through a vast shift in the voltage dependence of channel activation by ∼140 mV in the hyperpolarizing direction. In this study, we found that the single transmembrane (TM) segment together with its flanking charged residues is sufficient to fully modulate BK channels upon its transplantation into the structurally unrelated β1 subunit. We identified Phe273 and its neighboring residues in the middle of the TM segment and a minimum of three intracellular juxtamembrane Arg residues as important for the γ1 subunit's modulatory function and observed functional coupling between residues of these two locations. We concluded that the TM segment is a key molecular determinant for channel association and modulation and that the intracellular positively charged cluster is involved mainly in channel association, likely through its TM-anchoring effect. Our findings provide insights into the structure-function relationship of the γ1 subunit in understanding its potent modulatory effects on BK channels.

Indexed as

Ion Channel GatingAction PotentialsArginineHEK293 CellsHumansLarge-Conductance Calcium-Activated Potassium ChannelsProtein DomainsProtein SubunitsArginineLarge-Conductance Calcium-Activated Potassium ChannelsProtein Subunits

Identifiers

PMID27022192
PMCPMC4810070
OpenAlexW2323003269

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.