Evidence map›Paper›PMID 20508092›Full record

ArticleScience (New York, N.Y.)2010

Structure of the human BK channel Ca2+-activation apparatus at 3.0 A resolution.

Peng Yuan, Manuel D Leonetti, Alexander R Pico, Yichun Hsiung, Roderick MacKinnon

Open access · greenAbstract read
In one paragraph

Article in Science (New York, N.Y.), 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 191 papers.

0numbers the graph read from it
0cells of the map it votes in
191citing papers in PubMed
14.6field-weighted citation impact, top 1% 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

191 citing papers in PubMed, 300 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Cytochrome C-like Domain Within the Human BK Channel.International journal of molecular sciences · 2025
    Article
  5. Article
  6. Calcium channels as pharmacological targets for cancer therapy.Clinical and experimental medicine · 2025
    Review
  7. Identification ofMolecules (Basel, Switzerland) · 2025
    Article
  8. Andrology · 2025
    Review
  9. Article
  10. Article
  11. Article
  12. Redox-dependent CdBiophysical journal · 2024
    Article
  13. American journal of physiology. Renal physiology · 2024
    Article
  14. Article
  15. Article
  16. SLO3: A Conserved Regulator of Sperm Membrane Potential.International journal of molecular sciences · 2023
    Review
  17. Regulation of Neurotransmitter Release by KAdvances in neurobiology · 2023
    Article
  18. Cholesterol and PIPAdvances in experimental medicine and biology · 2023
    Article
  19. KCurrent neuropharmacology · 2023
    Review
  20. Article

131 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Peng YuanLaboratory of Molecular Neurobiology and Biophysics, Rockefeller University, Howard Hughes Medical Institute, 1230 York Avenue, New York, NY 10065, USA.
Manuel D Leonetti
Alexander R Pico
Yichun Hsiung
Roderick MacKinnon
Howard Hughes Medical Institute · US

Funding

Voltage-Dependent Ion Channel GatingR01GM043949 · NIGMS · ROCKEFELLER UNIVERSITY · PI MACKINNON, RODERICK · 1990 to 2024
$10.1M
Case Center for Synchrotron BiosciencesP30EB009998 · NIBIB · CASE WESTERN RESERVE UNIVERSITY · PI CHANCE, MARK R · 2009 to 2018
$8.4M
Howard Hughes Medical InstituteNIBIB NIH HHS P30 EB009998NIGMS NIH HHS R01 GM043949
6 · The paper itself

Abstract

High-conductance voltage- and Ca2+-activated K+ (BK) channels encode negative feedback regulation of membrane voltage and Ca2+ signaling, playing a central role in numerous physiological processes. We determined the x-ray structure of the human BK Ca2+ gating apparatus at a resolution of 3.0 angstroms and deduced its tetrameric assembly by solving a 6 angstrom resolution structure of a Na+-activated homolog. Two tandem C-terminal regulator of K+ conductance (RCK) domains from each of four channel subunits form a 350-kilodalton gating ring at the intracellular membrane surface. A sequence of aspartic amino acids that is known as the Ca2+ bowl, and is located within the second of the tandem RCK domains, creates four Ca2+ binding sites on the outer perimeter of the gating ring at the "assembly interface" between RCK domains. Functionally important mutations cluster near the Ca2+ bowl, near the "flexible interface" between RCK domains, and on the surface of the gating ring that faces the voltage sensors. The structure suggests that the Ca2+ gating ring, in addition to regulating the pore directly, may also modulate the voltage sensor.

Indexed as

Ion Channel GatingAmino Acid SequenceBinding SitesCalciumCrystallography, X-RayHumansLarge-Conductance Calcium-Activated Potassium Channel alpha SubunitsLigandsModels, MolecularMolecular Sequence DataMutant ProteinsPatch-Clamp TechniquesProtein ConformationProtein FoldingProtein Structure, QuaternaryProtein Structure, SecondaryCalciumKCNMA1 protein, humanLarge-Conductance Calcium-Activated Potassium Channel alpha SubunitsLigandsMutant ProteinsProtein SubunitsSodium

Identifiers

PMID20508092
PMCPMC3022345
OpenAlexW2115676911

What OpenQuestion holds

Textmetadata
LicenceTDM
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.