Evidence map›Paper›PMID 8769423›Full record

ArticleThe Journal of cell biology1996

Symplekin, a novel type of tight junction plaque protein.

B H Keon, S Schäfer, C Kuhn, C Grund, W W Franke

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of cell biology, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 78 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
78citing papers in PubMed, 1 pooled it
25.7field-weighted citation impact, top 1% 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

78 citing papers in PubMed, 1 synthesis or guideline pooled it, 284 citations in OpenAlex.

  1. Pooled it
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  17. mRNA 3' end processing factors: a phylogenetic comparison.Comparative and functional genomics · 2012
    Article
  18. The tight junction scaffolding protein cingulin regulates neural crest cell migration.Developmental dynamics : an official publication of the American Association of Anatomists · 2011
    Article
  19. Article
  20. Review

18 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

5 authors at 2 institutions in 1 country.

B H KeonDivision of Cell Biology, German Cancer Research Center, Heidelberg, Germany.
S Schäfer
C Kuhn
C Grund
W W Franke
German Cancer Research Center · DEHeidelberg University · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Using a monoclonal antibody we have identified and cDNA-cloned a novel type of protein localized, by light and electron microscopy, to the plaque associated with the cytoplasmic face of the tight junction-containing zone (zonula occludens) of polar epithelial cells and of Sertoli cells of testis, but absent from the junctions of vascular endothelia. The approximately 3.7-kb mRNA encodes a polypeptide of 1142 amino acids (calculated molecular weight 126.5 kD, pI 6.25), for which the name "symplekin" (from Greek sigma upsilon mu pi lambda epsilon kappa epsilon iota, nu, to tie together, to weave, to be intertwined) is proposed. However, both the mRNA and the protein can also be detected in a wide range of cell types that do not form tight junctions or are even completely devoid of any stable cell contacts. Careful analyses have revealed that the protein occurs in all these diverse cells in the nucleoplasm, and only in those cells forming tight junctions is it recruited, partly but specifically, to the plaque structure of the zonula occludens. We discuss symplekin as a representative of a group of dual residence proteins which occur and probably function in the nucleus as well as in the plaques exclusive for either tight junctions, adherens junctions, or desmosomes.

Indexed as

Amino Acid SequenceAntibodies, MonoclonalAntigens, NuclearAntigens, SurfaceBase SequenceCell FractionationCell NucleusCells, CulturedCloning, MolecularCytoplasmDNA, ComplementaryEpithelial CellsEpitheliumHumansIsoelectric PointMaleAntibodies, MonoclonalAntigens, NuclearAntigens, SurfaceDNA, ComplementaryNuclear ProteinsProteinsRNA, MessengerSYMPK protein, human

Identifiers

PMID8769423
PMCPMC2120966
OpenAlexW2065813594

What OpenQuestion holds

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LicenceCC BY-NC-SA
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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.