Evidence map›Paper›PMID 32374262›Full record

ArticleeLife2020

Cryo-EM structures and functional properties of CALHM channels of the human placenta.

Katarzyna Drożdżyk, Marta Sawicka, Maria-Isabel Bahamonde-Santos, Zaugg Jonas, Dawid Deneka, Christiane Albrecht, Raimund Dutzler

Open access · goldAbstract readComparative StudyVideo-Audio Media
In one paragraph

Article in eLife, 2020. 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
2.2field-weighted citation impact, top 12% 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

27 citing papers in PubMed, 46 citations in OpenAlex.

  1. Article
  2. Review
  3. CALHM5 deficiency alleviates aortic aneurysm by regulating smooth muscle calcium homeostasis.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  4. Article
  5. Article
  6. Review
  7. Review
  8. Review
  9. A mechanism of CALHM1 ion channel gating.American journal of physiology. Cell physiology · 2025
    Article
  10. 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
  11. Article
  12. Article
  13. The C-terminal activating domain promotes Panx1 channel opening.bioRxiv : the preprint server for biology · 2024
    Article
  14. Review
  15. Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. When is a hydrophobic gate not a hydrophobic gate?The Journal of general physiology · 2022
    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

7 authors at 2 institutions in 1 country.

Katarzyna Drożdżyk *Department of Biochemistry, University of Zurich, Zurich, Switzerland.ORCID 0000-0001-6288-4735
Marta Sawicka *Department of Biochemistry, University of Zurich, Zurich, Switzerland.ORCID 0000-0003-4589-4290
Maria-Isabel Bahamonde-SantosDepartment of Biochemistry, University of Zurich, Zurich, Switzerland.
Zaugg JonasInstitute of Biochemistry and Molecular Medicine, University of Bern, Bern, Switzerland.
Dawid DenekaDepartment of Biochemistry, University of Zurich, Zurich, Switzerland.
Christiane AlbrechtInstitute of Biochemistry and Molecular Medicine, University of Bern, Bern, Switzerland.
Raimund DutzlerDepartment of Biochemistry, University of Zurich, Zurich, Switzerland.ORCID 0000-0002-2193-6129
University of Zurich · CHUniversity of Bern · CH

Funding

Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung 31003A_163421Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung NCCR TransCure
6 · The paper itself

Abstract

The transport of substances across the placenta is essential for the development of the fetus. Here, we were interested in the role of channels of the calcium homeostasis modulator (CALHM) family in the human placenta. By transcript analysis, we found the paralogs CALHM2, 4, and 6 to be highly expressed in this organ and upregulated during trophoblast differentiation. Based on electrophysiology, we observed that activation of these paralogs differs from the voltage- and calcium-gated channel CALHM1. Cryo-EM structures of CALHM4 display decameric and undecameric assemblies with large cylindrical pore, while in CALHM6 a conformational change has converted the pore shape into a conus that narrows at the intracellular side, thus describing distinct functional states of the channel. The pore geometry alters the distribution of lipids, which occupy the cylindrical pore of CALHM4 in a bilayer-like arrangement whereas they have redistributed in the conical pore of CALHM6 with potential functional consequences.

Indexed as

Cryoelectron MicroscopyCalcium ChannelsFemaleHEK293 CellsHumansMembrane GlycoproteinsMembrane LipidsMembrane PotentialsModels, MolecularPlacentaPregnancyProtein ConformationStructure-Activity RelationshipCalcium ChannelsCALHM1 protein, humanCALHM2 protein, humanCALHM6 protein, humanMembrane GlycoproteinsMembrane LipidsCALHM channelscryo-electron microscopyelectrophysiologyhumanlipidsmolecular biophysicsplacentastructural biologytranscription analysis

Identifiers

PMID32374262
PMCPMC7242029
OpenAlexW3022740529

What OpenQuestion holds

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LicenceCC BY
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.