Evidence map›Paper›PMID 7519625›Full record

ArticleThe Journal of cell biology1994

A double leucine within the GLUT4 glucose transporter COOH-terminal domain functions as an endocytosis signal.

S Corvera, A Chawla, R Chakrabarti, M Joly, J Buxton, M P Czech

Erratum issuedOpen access · bronzeAbstract readComparative Study
In one paragraph

Article in The Journal of cell biology, 1994. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
3.3field-weighted citation impact, top 7% 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

32 citing papers in PubMed, 100 citations in OpenAlex.

  1. Article
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  4. Reciprocal regulation of endocytosis and metabolism.Cold Spring Harbor perspectives in biology · 2014
    Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

S CorveraProgram in Molecular Medicine, University of Massachusetts Medical Center, Worcester 01605.
A Chawla
R Chakrabarti
M Joly
J Buxton
M P Czech
University of Massachusetts Amherst · US

Funding

Insulin Signaling and Metabolic Regulation in AdipocytesR37DK030898 · NIDDK · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI CZECH, MICHAEL P · 1996 to 2021
$7.2M
Insulin Signaling and Metabolic Regulation in AdipocytesR01DK030898 · NIDDK · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI CZECH, MICHAEL P · 1986 to 2011
$2.7M
NIDDK NIH HHS DK30898
6 · The paper itself

Abstract

The unique COOH-terminal 30-amino acid region of the adipocyte/skeletal muscle glucose transporter (GLUT4) appears to be a major structural determinant of this protein's perinuclear localization, from where it is redistributed to the cell surface in response to insulin. To test whether an underlying mechanism of this domain's function involves glucose transporter endocytosis rates, transfected cells were generated expressing exofacial hemagglutinin epitope (HA)-tagged erythrocyte/brain glucose transporter (GLUT1) or a chimera containing the COOH-terminal 30 amino acids of GLUT4 substituted onto this GLUT1 construct. Incubation of COS-7 or CHO cells expressing the HA-tagged chimera with anti-HA antibody at 37 degrees resulted in an increased rate of antibody internalization compared to cells expressing similar levels of HA-tagged GLUT1, which displays a cell surface disposition. Colocalization of the internalized anti-HA antibody in vesicular structures with internalized transferrin and with total transporters was established by digital imaging microscopy, suggesting the total cellular pool of transporters are continuously recycling through the coated pit endocytosis pathway. Mutation of the unique double leucines 489 and 490 in the rat GLUT4 COOH-terminal domain to alanines caused the HA-tagged chimera to revert to the slow endocytosis rate and steady-state cell surface display characteristic of GLUT1. These results support the hypothesis that the double leucine motif in the GLUT4 COOH terminus operates as a rapid endocytosis and retention signal in the GLUT4 transporter, causing its localization to intracellular compartments in the absence of insulin.

Indexed as

EndocytosisLeucineMuscle ProteinsAmino Acid SequenceAnimalsCell LineChlorocebus aethiopsCHO CellsCoated Pits, Cell-MembraneCricetinaeDeoxyglucoseEpitopesGlucose Transporter Type 1Glucose Transporter Type 4HumansKineticsDeoxyglucoseEpitopesGlucose Transporter Type 1Glucose Transporter Type 4LeucineMonosaccharide Transport ProteinsMuscle ProteinsRecombinant Fusion ProteinsSLC2A1 protein, humanSlc2a1 protein, ratSLC2A4 protein, humanSlc2a4 protein, ratTransferrin

Identifiers

PMID7519625
PMCPMC2120130
OpenAlexW3027580460

What OpenQuestion holds

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LicenceCC BY-NC-SA
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.