Evidence map›Paper›PMID 19321666›Full record

ArticleMolecular biology of the cell2009

ERp29 restricts Connexin43 oligomerization in the endoplasmic reticulum.

Shamie Das, Tekla D Smith, Jayasri Das Sarma, Jeffrey D Ritzenthaler, Jose Maza, Benjamin E Kaplan, Leslie A Cunningham, Laurence Suaud, Michael J Hubbard, Ronald C Rubenstein and 1 more

Open access · greenAbstract read
In one paragraph

Article in Molecular biology of the cell, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers.

0numbers the graph read from it
0cells of the map it votes in
58citing papers in PubMed
3.6field-weighted citation impact, top 6% 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

58 citing papers in PubMed, 89 citations in OpenAlex.

  1. Article
  2. Deceiving the gatekeepers: virus modulation of gap junctions.Microbiology and molecular biology reviews : MMBR · 2025
    Review
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Connexins and Glucose Metabolism in Cancer.International journal of molecular sciences · 2022
    Review
  13. Review
  14. Review
  15. Article
  16. Structure and Functions of Gap Junctions and Their Constituent Connexins in the Mammalian CNS.Biochemistry (Moscow) Supplement. Series A, Membrane and cell biology · 2021
    Article
  17. Review
  18. Article
  19. Article
  20. 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

11 authors at 5 institutions in 3 countries.

Shamie DasDepartment of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA.
Tekla D Smith
Jayasri Das Sarma
Jeffrey D Ritzenthaler
Jose Maza
Benjamin E Kaplan
Leslie A Cunningham
Laurence Suaud
Michael J Hubbard
Ronald C Rubenstein
Michael Koval
Pulmonary and Allergy Associates · USEmory University · USUniversity of Pennsylvania · USIndian Institute of Science Education and Research Kolkata · INThe University of Melbourne · AU

Funding

THE ROLE OF TGFB IN ETHANOL MEDIATED LUNG INJURYP50AA013757 · NIAAA · EMORY UNIVERSITY · PI GUIDOT, DAVID MARSHALL · 2003 to 2013
$15.7M
DELTAF508-CFTR TRAFFICKING REGULATED BY 4-PHENYLBUTYRATER01DK058046 · NIDDK · CHILDREN'S HOSP OF PHILADELPHIA · PI RUBENSTEIN, RONALD C · 2000 to 2012
$3.5M
Institutional Training Grant in Alcohol ResearchT32AA013528 · NIAAA · EMORY UNIVERSITY · PI GUIDOT, DAVID MARSHALL · 2002 to 2011
$3.2M
Molecular determinants of lung barrier functionR01HL083120 · NHLBI · EMORY UNIVERSITY · PI KOVAL, MICHAEL H. · 2006 to 2009
$1.4M
CONTROL OF CONNEXIN TRANSPORT AND ASSEMBLYR01GM061012 · NIGMS · UNIVERSITY OF PENNSYLVANIA · PI KOVAL, MICHAEL H. · 2000 to 2004
$1.1M
NHLBI NIH HHS HL-083120NHLBI NIH HHS R01 HL083120NIAAA NIH HHS AA-013528NIAAA NIH HHS AA-013757NIAAA NIH HHS P50 AA013757NIAAA NIH HHS T32 AA013528NIDDK NIH HHS DK-58046NIDDK NIH HHS R01 DK058046NIGMS NIH HHS GM-61012NIGMS NIH HHS R01 GM061012
6 · The paper itself

Abstract

Connexin43 (Cx43) is a gap junction protein that forms multimeric channels that enable intercellular communication through the direct transfer of signals and metabolites. Although most multimeric protein complexes form in the endoplasmic reticulum (ER), Cx43 seems to exit from the ER as monomers and subsequently oligomerizes in the Golgi complex. This suggests that one or more protein chaperones inhibit premature Cx43 oligomerization in the ER. Here, we provide evidence that an ER-localized, 29-kDa thioredoxin-family protein (ERp29) regulates Cx43 trafficking and function. Interfering with ERp29 function destabilized monomeric Cx43 oligomerization in the ER, caused increased Cx43 accumulation in the Golgi apparatus, reduced transport of Cx43 to the plasma membrane, and inhibited gap junctional communication. ERp29 also formed a specific complex with monomeric Cx43. Together, this supports a new role for ERp29 as a chaperone that helps stabilize monomeric Cx43 to enable oligomerization to occur in the Golgi apparatus.

Indexed as

AnimalsCell CommunicationCell LineConnexin 43Endoplasmic ReticulumGolgi ApparatusHeat-Shock ProteinsHexachlorocyclohexaneHumansIntracellular SpaceMiceModels, BiologicalMutant ProteinsProtein BindingProtein Structure, QuaternaryProtein TransportConnexin 43ERP29 protein, humanErp29 protein, ratHeat-Shock ProteinsHexachlorocyclohexaneMutant ProteinsRNA, Small Interfering

Identifiers

PMID19321666
PMCPMC2682600
OpenAlexW2124374326

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.