Evidence map›Paper›PMID 7504298›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America1993

Activation of phosphotyrosine phosphatase activity by reduction of cell-substrate adhesion.

P A Maher

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 1993. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing 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

16 citing papers in PubMed, 58 citations in OpenAlex.

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  9. Control of normal mammary epithelial phenotype by integrins.Journal of mammary gland biology and neoplasia · 1998
    Review
  10. Cell locomotion and focal adhesions are regulated by substrate flexibility.Proceedings of the National Academy of Sciences of the United States of America · 1997
    Article
  11. Article
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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

1 author at 1 institution in 1 country.

P A MaherDepartment of Molecular and Cellular Growth Biology, Whittier Institute for Diabetes and Endocrinology, La Jolla, CA 92037.
Scripps Whittier Diabetes Institute · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Treatment of chicken embryo fibroblasts (CEFs) with trypsin results in a dose- and time-dependent loss of phosphotyrosine from cellular proteins. A similar, but less marked, reduction in protein tyrosine phosphorylation occurs upon incubation of CEFs in phosphate-buffered saline (PBS). The decrease in the phosphotyrosine content of proteins following treatment with trypsin or PBS, as determined by immunoblotting of cell extracts with anti-phosphotyrosine antibodies, corresponds with a loss of phosphotyrosine antibody immunoreactivity at focal contacts, as detected by immunofluorescence microscopy. The recovery of phosphotyrosine in cellular proteins occurs within 30 min following removal of trypsin, even in the presence of the protein synthesis inhibitor cycloheximide, indicating that the loss of phosphotyrosine-containing proteins is not due to their degradation by trypsin. Pretreatment of CEFs with inhibitors of protein-tyrosine-phosphatases greatly reduces the loss of phosphotyrosine from proteins brought about by trypsin. In addition, phosphotyrosine phosphatase activity is increased in extracts prepared from trypsin-treated CEFs. The loss of phosphotyrosine from proteins following treatment with trypsin or PBS is not specific to CEFs but is also observed in established fibroblast lines. Taken together these results suggest that the activity of one or more phosphotyrosine phosphatases is regulated by cell-substrate adhesion.

Indexed as

Cell AdhesionActin CytoskeletonActinsAnimalsBlotting, WesternCells, CulturedChick EmbryoEnzyme ActivationFluorescent Antibody TechniqueIn Vitro TechniquesPhosphoproteinsPhosphotyrosineProtein Tyrosine PhosphatasesTrypsinTyrosineActinsPhosphoproteinsPhosphotyrosineProtein Tyrosine PhosphatasesTrypsinTyrosine

Identifiers

PMID7504298
PMCPMC47945
OpenAlexW1989297731

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.