Evidence map›Paper›PMID 25056878›Full record

ArticleScience signaling2014

The membrane protein Pannexin1 forms two open-channel conformations depending on the mode of activation.

Junjie Wang, Cinzia Ambrosi, Feng Qiu, David G Jackson, Gina Sosinsky, Gerhard Dahl

Abstract read
In one paragraph

Article in Science signaling, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 76 papers.

0numbers the graph read from it
0cells of the map it votes in
76citing papers in PubMed
3.1field-weighted citation impact, top 8% 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

76 citing papers in PubMed, 120 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Contribution of pannexin channels to afterimage signals in the amphibian retina.American journal of physiology. Cell physiology · 2025
    Article
  5. Article
  6. Review
  7. PANX1 hexamers work but cells prefer heptamers.The Journal of general physiology · 2025
    Article
  8. Article
  9. The C-terminal activating domain promotes pannexin 1 channel opening.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  10. Review
  11. Article
  12. Review
  13. The C-terminal activating domain promotes Panx1 channel opening.bioRxiv : the preprint server for biology · 2024
    Article
  14. Review
  15. Article
  16. Review
  17. Gap Junctions in Ctenophora.Methods in molecular biology (Clifton, N.J.) · 2024
    Article
  18. Article
  19. Review
  20. Review

16 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.

Junjie WangDepartment of Physiology and Biophysics, University of Miami School of Medicine, Miami, FL 33136, USA.
Cinzia AmbrosiNational Center for Microscopy and Imaging Research, Center for Research in Biological Systems, University of California, San Diego, La Jolla, CA 92093-06083, USA.
Feng QiuDepartment of Physiology and Biophysics, University of Miami School of Medicine, Miami, FL 33136, USA.
David G JacksonDepartment of Physiology and Biophysics, University of Miami School of Medicine, Miami, FL 33136, USA.
Gina SosinskyNational Center for Microscopy and Imaging Research, Center for Research in Biological Systems, University of California, San Diego, La Jolla, CA 92093-06083, USA. Department of Neurosciences, University of California, San Diego, La Jolla, CA 92093-06083, USA.
Gerhard DahlDepartment of Physiology and Biophysics, University of Miami School of Medicine, Miami, FL 33136, USA. gdahl@miami.edu.
University of Miami · US

Funding

IVEM and Image Analysis ResourceP41GM103412 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI ELLISMAN, MARK H · 2012 to 2019
$17.9M
STRUCTURE AND DYNAMICS OF CONNEXIN26 GAP JUNCTIONSR01GM065937 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI PERKINS, GUY A · 2003 to 2016
$3.9M
STRUCTURAL ANALYSIS OF GAP JUNCTION TRAFFICKINGR01GM072881 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI PERKINS, GUY A · 2005 to 2015
$2.6M
NIGMS NIH HHS GM065937NIGMS NIH HHS GM072881NIGMS NIH HHS GM103412NIGMS NIH HHS P41 GM103412NIGMS NIH HHS R01 GM065937NIGMS NIH HHS R01 GM072881
6 · The paper itself

Abstract

Pannexin1 (Panx1) participates in several signaling events that involve adenosine triphosphate (ATP) release, including the innate immune response, ciliary beat in airway epithelia, and oxygen supply in the vasculature. The view that Panx1 forms a large ATP release channel has been challenged by the association of a low-conductance, small anion-selective channel with the presence of Panx1. We showed that Panx1 membrane channels can function in two distinct modes with different conductances and permeabilities when heterologously expressed in Xenopus oocytes. When stimulated by potassium ions (K(+)), Panx1 formed a high-conductance channel of ~500 pS that was permeable to ATP. Various physiological stimuli can induce this ATP-permeable conformation of the channel in several cell types. In contrast, the channel had a low conductance (~50 pS) with no detectable ATP permeability when activated by voltage in the absence of K(+). The two channel states were associated with different reactivities of the terminal cysteine of Panx1 to thiol reagents, suggesting different conformations. Single-particle electron microscopic analysis revealed that K(+) stimulated the formation of channels with a larger pore diameter than those formed in the absence of K(+). These data suggest that different stimuli lead to distinct channel structures with distinct biophysical properties.

Indexed as

Adenosine TriphosphateAnimalsBiological Transport, ActiveCell Membrane PermeabilityConnexinsMiceNerve Tissue ProteinsPotassiumSignal TransductionXenopus laevisAdenosine TriphosphateConnexinsNerve Tissue ProteinsPanx1 protein, mousePotassium

Identifiers

PMID25056878
PMCPMC4243966
OpenAlexW2101481749

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.