Evidence map›Paper›PMID 22796945›Full record

ArticleThe EMBO journal2012

BiP-mediated closing of the Sec61 channel limits Ca2+ leakage from the ER.

Nico Schäuble, Sven Lang, Martin Jung, Sabine Cappel, Stefan Schorr, Özlem Ulucan, Johannes Linxweiler, Johanna Dudek, Robert Blum, Volkhard Helms and 4 more

Erratum issuedOpen access · bronzeAbstract read
In one paragraph

Article in The EMBO journal, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 108 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
108citing papers in PubMed, 1 pooled it
5.0field-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

108 citing papers in PubMed, 1 synthesis or guideline pooled it, 166 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Review
  4. Article
  5. Review
  6. Review
  7. Review
  8. Article
  9. Review
  10. Article
  11. Review
  12. Review
  13. Review
  14. Review
  15. Review
  16. Article
  17. Article
  18. Article
  19. Review
  20. Article

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

4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

14 authors at 3 institutions in 2 countries.

Nico SchäubleDepartment of Medical Biochemistry and Molecular Biology, Saarland University, Homburg, Germany.
Sven Lang
Martin Jung
Sabine Cappel
Stefan Schorr
Özlem Ulucan
Johannes Linxweiler
Johanna Dudek
Robert Blum
Volkhard Helms
Adrienne W Paton
James C Paton
Adolfo Cavalié
Richard Zimmermann
Saarland University · DEUniversity of Adelaide · AUUniversity of Würzburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In mammalian cells, signal peptide-dependent protein transport into the endoplasmic reticulum (ER) is mediated by a dynamic protein-conducting channel, the Sec61 complex. Previous work has characterized the Sec61 channel as a potential ER Ca(2+) leak channel and identified calmodulin as limiting Ca(2+) leakage in a Ca(2+)-dependent manner by binding to an IQ motif in the cytosolic aminoterminus of Sec61α. Here, we manipulated the concentration of the ER lumenal chaperone BiP in cells in different ways and used live cell Ca(2+) imaging to monitor the effects of reduced levels of BiP on ER Ca(2+) leakage. Regardless of how the BiP concentration was lowered, the absence of available BiP led to increased Ca(2+) leakage via the Sec61 complex. When we replaced wild-type Sec61α with mutant Sec61αY344H in the same model cell, however, Ca(2+) leakage from the ER increased and was no longer affected by manipulation of the BiP concentration. Thus, BiP limits ER Ca(2+) leakage through the Sec61 complex by binding to the ER lumenal loop 7 of Sec61α in the vicinity of tyrosine 344.

Indexed as

Ion Channel GatingAmino Acid SequenceCalciumCalcium SignalingEndoplasmic ReticulumEndoplasmic Reticulum Chaperone BiPGene SilencingHeat-Shock ProteinsHeLa CellsHumansIon TransportMembrane ProteinsModels, MolecularMolecular Sequence DataProtein BindingProtein FoldingCalciumEndoplasmic Reticulum Chaperone BiPHeat-Shock ProteinsMembrane ProteinsRNA, Small InterferingSEC61A1 protein, humanSEC Translocation Channels

Identifiers

PMID22796945
PMCPMC3411083
OpenAlexW2027011407

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.