Evidence map›Paper›PMID 18664489›Full record

ArticleJournal of cell science2008

An intact connexin N-terminus is required for function but not gap junction formation.

John W Kyle, Peter J Minogue, Bettina C Thomas, Denise A Lopez Domowicz, Viviana M Berthoud, Dorothy A Hanck, Eric C Beyer

Open access · greenAbstract read
In one paragraph

Article in Journal of cell science, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing 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

30 citing papers in PubMed, 59 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Review
  5. RhoA/ROCK Regulates Prion Pathogenesis by Controlling Connexin 43 Activity.International journal of molecular sciences · 2020
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. The NHAmerican journal of physiology. Cell physiology · 2017
    Article
  13. Review
  14. Review
  15. Article
  16. Article
  17. Article
  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

7 authors at 1 institution in 1 country.

John W KyleDepartment of Medicine, Section of Cardiology, University of Chicago, Chicago, IL 60637, USA.
Peter J Minogue
Bettina C Thomas
Denise A Lopez Domowicz
Viviana M Berthoud
Dorothy A Hanck
Eric C Beyer
University of Chicago · US

Funding

THE MOLECULAR BASIS OF B-MANNOSIDOSISP01HD009402 · NICHD · UNIVERSITY OF CHICAGO · PI KRAIG, RICHARD P · 1985 to 2015
$13.0M
BIOLOGY OF LENS INTERCELLULAR COMMUNICATIONR01EY008368 · NEI · WASHINGTON UNIVERSITY · PI BEYER, ERIC C · 1995 to 2018
$7.1M
CONNEXONS IN CARDIOVASCULAR CELL COMMUNICATIONR01HL059199 · NHLBI · UNIVERSITY OF CHICAGO · PI BEYER, ERIC C · 1998 to 2013
$3.9M
NEI NIH HHS R01 EY008368NHLBI NIH HHS HL59199NHLBI NIH HHS R01 HL059199NICHD NIH HHS P01 HD009402
6 · The paper itself

Abstract

The cytoplasmic N-termini of connexins have been implicated in protein trafficking, oligomerization and channel gating. To elucidate the role of the N-terminus in connexin37 (CX37), we studied mutant constructs containing partial deletions of its 23 N-terminal amino acids and a construct with a complete N-terminus in which residues 2-8 were replaced with alanines. All mutants containing nine or more N-terminal amino acids form gap junction plaques in transiently transfected HeLa cells, whereas most of the longer deletions do not. Although wild-type CX37 allowed intercellular transfer of microinjected neurobiotin in HeLa cells and formed conducting hemichannels in Xenopus oocytes, none of the mutant constructs tested show evidence of channel function. However, in coexpression experiments, N-terminal mutants that formed gap junction plaques potently inhibit hemichannel conductance of wild-type CX37 suggesting their co-oligomerization. We conclude that as much as half the length of the connexin N-terminus can be deleted without affecting formation of gap junction plaques, but an intact N-terminus is required for hemichannel gating and intercellular communication.

Indexed as

AlanineAmino Acid SequenceAmino Acid SubstitutionCell CommunicationConnexinsGap Junction alpha-4 ProteinGap JunctionsHeLa CellsHumansIon Channel GatingIon ChannelsModels, BiologicalMolecular Sequence DataProtein Structure, TertiarySequence DeletionTransfectionAlanineConnexinsGap Junction alpha-4 ProteinIon Channels

Identifiers

PMID18664489
PMCPMC2752142
OpenAlexW2131592914

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.