Evidence map›Paper›PMID 25908859›Full record

ArticleJournal of cell science2015

Induction of stable ER-plasma-membrane junctions by Kv2.1 potassium channels.

Philip D Fox, Christopher J Haberkorn, Elizabeth J Akin, Peter J Seel, Diego Krapf, Michael M Tamkun

Open access · bronzeAbstract read
In one paragraph

Article in Journal of cell science, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 82 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
82citing papers in PubMed, 1 pooled it
4.7field-weighted citation impact, top 4% 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

82 citing papers in PubMed, 1 synthesis or guideline pooled it, 121 citations in OpenAlex.

  1. Stay in touch with the endoplasmic reticulum.Science China. Life sciences · 2024
    Pooled it
  2. Nanoscale CabioRxiv : the preprint server for biology · 2026
    Article
  3. Ion channels and actin: A tale of two friends.Histology and histopathology · 2025
    Review
  4. Article
  5. Article
  6. Review
  7. Review
  8. Review
  9. The Electrically Silent Kv5.1 Subunit Forms Heteromeric Kv2 Channels in Cortical Neurons and Confers Distinct Functional Properties.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  10. Glucocorticoids Rapidly Modulate CaThe Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
    Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Review
  16. Article
  17. Review
  18. Article
  19. Increased KCells · 2022
    Article
  20. Review

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

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

6 authors at 1 institution in 1 country.

Philip D FoxDepartment of Biomedical Sciences, Colorado State University, Fort Collins, CO 80523, USA.
Christopher J HaberkornDepartment of Biomedical Sciences, Colorado State University, Fort Collins, CO 80523, USA.
Elizabeth J AkinDepartment of Biomedical Sciences, Colorado State University, Fort Collins, CO 80523, USA.
Peter J SeelSchool of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA.
Diego KrapfSchool of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, CO 80523, USA.
Michael M TamkunDepartment of Biomedical Sciences, Colorado State University, Fort Collins, CO 80523, USA Department of Biochemistry and Molecular Biology, Colorado State University, Fort Collins, CO 80523, USA michael.tamkun@colostate.edu.
Colorado State University · US

Funding

Kv2.1 membrane corrals:Regulators of K+ channel function and traffickingR01GM084136 · NIGMS · COLORADO STATE UNIVERSITY · PI TAMKUN, MICHAEL M. · 2009 to 2012
$1.6M
Structural and Functional Interactions within the Neuronal ER/PM JunctionR01GM109888 · NIGMS · COLORADO STATE UNIVERSITY · PI BEAM, KURT G, KRAFT, MARY L · 2014 to 2017
$1.5M
NIGMS NIH HHS R01 GM084136NIGMS NIH HHS R01GM084136S1NIGMS NIH HHS R01 GM109888NIGMS NIH HHS R01GM109888NIGMS NIH HHS R01GM84136
6 · The paper itself

Abstract

Junctions between cortical endoplasmic reticulum (cER) and the plasma membrane are a subtle but ubiquitous feature in mammalian cells; however, very little is known about the functions and molecular interactions that are associated with neuronal ER-plasma-membrane junctions. Here, we report that Kv2.1 (also known as KCNB1), the primary delayed-rectifier K(+) channel in the mammalian brain, induces the formation of ER-plasma-membrane junctions. Kv2.1 localizes to dense, cell-surface clusters that contain non-conducting channels, indicating that they have a function that is unrelated to membrane-potential regulation. Accordingly, Kv2.1 clusters function as membrane-trafficking hubs, providing platforms for delivery and retrieval of multiple membrane proteins. Using both total internal reflection fluorescence and electron microscopy we demonstrate that the clustered Kv2.1 plays a direct structural role in the induction of stable ER-plasma-membrane junctions in both transfected HEK 293 cells and cultured hippocampal neurons. Glutamate exposure results in a loss of Kv2.1 clusters in neurons and subsequent retraction of the cER from the plasma membrane. We propose Kv2.1-induced ER-plasma-membrane junctions represent a new macromolecular plasma-membrane complex that is sensitive to excitotoxic insult and functions as a scaffolding site for both membrane trafficking and Ca(2+) signaling.

Indexed as

CalciumCell LineCell MembraneEndoplasmic ReticulumGlutamic AcidHEK293 CellsHippocampusHumansMembrane PotentialsMembrane ProteinsNeuronsProtein TransportShab Potassium ChannelsSignal TransductionCalciumGlutamic AcidKCNB1 protein, humanMembrane ProteinsShab Potassium ChannelsIon channelsMembrane contact sitesSub-surface cisterns

Identifiers

PMID25908859
PMCPMC4457025
OpenAlexW2399470849

What OpenQuestion holds

Textmetadata
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.