Evidence map›Paper›PMID 9895306›Full record

ArticleThe Biochemical journal1999

Epidermal growth factor receptor activation is localized within low-buoyant density, non-caveolar membrane domains.

M G Waugh, D Lawson, J J Hsuan

Open access · bronzeAbstract read
In one paragraph

Article in The Biochemical journal, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
4.3field-weighted citation impact, top 5% 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

44 citing papers in PubMed, 145 citations in OpenAlex.

  1. Review
  2. Afterword (Editorial).Glycoconjugate journal · 2023
    Article
  3. PI(4,5)PAdvances in experimental medicine and biology · 2023
    Article
  4. Rafting on the Plasma Membrane: Lipid Rafts in Signaling and Disease.Advances in experimental medicine and biology · 2023
    Review
  5. Article
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  10. RhoA localization with caveolin-1 regulates vascular contractions to serotonin.American journal of physiology. Regulatory, integrative and comparative physiology · 2012
    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

3 authors at 1 institution in 1 country.

M G WaughLudwig Institute for Cancer Research, University College London Medical School, Courtauld Building, 91 Riding House Street, London W1P 8BT, U.K.
D Lawson
J J Hsuan
University College London · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Increasing evidence for the organization of cell-surface proteins and lipids into different detergent-insoluble rafts led us to investigate epidermal growth factor (EGF) receptor activation in the plasma membranes of A431 carcinoma cells, using a combination of cell fractionation and immunoprecipitation techniques. Density-gradient centrifugation of sodium carbonate cell extracts revealed that the vast majority of both stimulated and unstimulated EGF receptors were concentrated in a caveolin-rich light membrane (CLM) fraction, with the biochemical characteristics of detergent-insoluble glycolipid-rich domains (DIGs). However, ultrastructural analysis of the CLM fraction revealed that it contained a heterogeneous collection of vesicles, some with sizes greater than that expected for individual caveolae. Experiments with detergent-solubilized cells and isolated CLMs indicated that, in contrast with caveolin, EGF receptors were unlikely to be localized to DIG domains. Furthermore, immunoisolation of caveolin from CLMs revealed that EGF receptor activation occurs in a compartment distinct from caveolae. Similarly, using an anti-(EGF receptor) antibody, the bulk of the cellular caveolin was not co-immunoprecipitated from CLMs, thereby confirming that these two proteins reside in separate membrane domains. The deduction that caveolar signalling and EGF receptor activation occur in separable rafts argues for a multiplicity of signal transduction compartments within the plasma membrane. In addition, by demonstrating that EGF receptor activation is compartmentalized within low-density, non-caveolar regions of the plasma membrane, it is also shown that the co-localization of proteins in a CLM fraction is insufficient to prove caveolar localization.

Indexed as

CaveolinsCaveolin 1Cell MembraneCentrifugation, Density GradientErbB ReceptorsHumansMembrane ProteinsMicroscopy, ElectronOctoxynolPrecipitin TestsSolubilitySurface-Active AgentsTumor Cells, CulturedCAV1 protein, humanCaveolin 1CaveolinsErbB ReceptorsMembrane ProteinsOctoxynolSurface-Active Agents

Identifiers

PMID9895306
PMCPMC1220014
OpenAlexW2006381992

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.