Evidence map›Paper›PMID 21098036›Full record

ArticleThe Journal of biological chemistry2011

Packing of the extracellular domain hydrophobic core has evolved to facilitate pentameric ligand-gated ion channel function.

Cosma D Dellisanti, Sonya M Hanson, Lin Chen, Cynthia Czajkowski

Abstract read
In one paragraph

Article in The Journal of biological chemistry, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
–field-weighted citation impact
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

11 citing papers in PubMed.

  1. Article
  2. Article
  3. Review
  4. String method solution of the gating pathways for a pentameric ligand-gated ion channel.Proceedings of the National Academy of Sciences of the United States of America · 2017
    Article
  5. Article
  6. Article
  7. Crystal structures of a pentameric ligand-gated ion channel provide a mechanism for activation.Proceedings of the National Academy of Sciences of the United States of America · 2014
    Article
  8. Article
  9. Article
  10. Article
  11. 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

4 authors.

Cosma D DellisantiDepartment of Physiology, University of Wisconsin, Madison, Wisconsin 53711, USA.
Sonya M Hanson
Lin Chen
Cynthia Czajkowski

Funding

Structural and Functional Versatility of NFATR01GM064642 · NIGMS · UNIVERSITY OF SOUTHERN CALIFORNIA · PI CHEN, LIN · 2005 to 2014
$2.5M
NIGMS NIH HHS R01 GM064642
6 · The paper itself

Abstract

Protein function depends on conformational flexibility and folding stability. Loose packing of hydrophobic cores is not infrequent in proteins, as the enhanced flexibility likely contributes to their biological function. Here, using experimental and computational approaches, we show that eukaryotic pentameric ligand-gated ion channels are characterized by loose packing of their extracellular domain β-sandwich cores, and that loose packing contributes to their ability to rapidly switch from closed to open channel states in the presence of ligand. Functional analyses of GABA(A) receptors show that increasing the β-core packing disrupted GABA-mediated currents, with impaired GABA efficacy and slowed GABA current activation and desensitization. We propose that loose packing of the hydrophobic β-core developed as an evolutionary strategy aimed to facilitate the allosteric mechanisms of eukaryotic pentameric ligand-gated ion channels.

Indexed as

Molecular Dynamics SimulationAllosteric RegulationAnimalsAplysiagamma-Aminobutyric AcidHydrophobic and Hydrophilic InteractionsIon Channel GatingLigand-Gated Ion ChannelsLymnaeaProtein FoldingReceptors, GABA-AThermodynamicsgamma-Aminobutyric AcidLigand-Gated Ion ChannelsReceptors, GABA-A

Identifiers

PMID21098036
PMCPMC3030369

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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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.