Evidence map›Paper›PMID 33724189›Full record

ArticleeLife2021

Architecture and structural dynamics of the heteromeric GluK2/K5 kainate receptor.

Nandish Khanra, Patricia Mge Brown, Amanda M Perozzo, Derek Bowie, Joel R Meyerson

Abstract read
In one paragraph

Article in eLife, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing 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

27 citing papers in PubMed.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Activation of kainate receptor GluK2-Neto2 complex.Nature structural & molecular biology · 2025
    Article
  9. Article
  10. Article
  11. Article
  12. Structure and gating of kainate receptors.Frontiers in pharmacology · 2025
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Kainate Receptor Antagonists: Recent Advances and Therapeutic Perspective.International journal of molecular sciences · 2023
    Review
  20. 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.

Nandish KhanraDepartment of Physiology and Biophysics, Weill Cornell Medical College, New York, United States.ORCID https://orcid.org/0000-0003-4217-1273
Patricia Mge BrownDepartment of Pharmacology and Therapeutics, McGill University, Montréal, Canada.ORCID https://orcid.org/0000-0001-8340-0330
Amanda M PerozzoDepartment of Pharmacology and Therapeutics, McGill University, Montréal, Canada.ORCID http://orcid.org/0000-0001-9681-3548
Derek BowieDepartment of Pharmacology and Therapeutics, McGill University, Montréal, Canada.ORCID http://orcid.org/0000-0001-9491-8768
Joel R MeyersonDepartment of Physiology and Biophysics, Weill Cornell Medical College, New York, United States.ORCID https://orcid.org/0000-0002-6127-0093

Funding

TRD #3: An automated and streamlined pipeline for in-situ molecular microscopyP41GM103310 · NIGMS · SCRIPPS RESEARCH INSTITUTE, THE · PI DE MARCO, ALEX, KIEFT, JEFFREY S · 2012 to 2021
$14.7M
ChimeraX -- Next Generation Visualization and Analysis Software for Multiscale ModelingR01GM129325 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI FERRIN, THOMAS E · 2018 to 2025
$5.2M
NIGMS NIH HHS P41 GM103310NIGMS NIH HHS R01 GM129325
6 · The paper itself

Abstract

Kainate receptors (KARs) are L-glutamate-gated ion channels that regulate synaptic transmission and modulate neuronal circuits. KARs have strict assembly rules and primarily function as heteromeric receptors in the brain. A longstanding question is how KAR heteromer subunits organize and coordinate together to fulfill their signature physiological roles. Here we report structures of the GluK2/GluK5 heteromer in apo, antagonist-bound, and desensitized states. The receptor assembles with two copies of each subunit, ligand binding domains arranged as two heterodimers and GluK5 subunits proximal to the channel. Strikingly, during desensitization, GluK2, but not GluK5, subunits undergo major structural rearrangements to facilitate channel closure. We show how the large conformational differences between antagonist-bound and desensitized states are mediated by the linkers connecting the pore helices to the ligand binding domains. This work presents the first KAR heteromer structure, reveals how its subunits are organized, and resolves how the heteromer can accommodate functionally distinct closed channel structures.

Indexed as

AnimalsBinding SitesGluK2 Kainate ReceptorGlutamic AcidHEK293 CellsHumansKainic Acid ReceptorsProtein BindingProtein ConformationProtein Interaction Domains and MotifsProtein MultimerizationProtein SubunitsGluK2 Kainate ReceptorGlutamic AcidKainic Acid ReceptorsProtein SubunitsbaculovirusHEK cellshumanmolecular biophysicsneuroscienceSf9 cellsstructural biology

Identifiers

PMID33724189
PMCPMC7997659

What OpenQuestion holds

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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.