Evidence map›Paper›PMID 12802062›Full record

ArticleMolecular biology of the cell2003

Membrane targeting of Rab GTPases is influenced by the prenylation motif.

Anita Q Gomes, Bassam R Ali, Jose S Ramalho, Richard F Godfrey, Duarte C Barral, Alistair N Hume, Miguel C Seabra

Open access · greenAbstract read
In one paragraph

Article in Molecular biology of the cell, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 83 papers.

0numbers the graph read from it
0cells of the map it votes in
83citing papers in PubMed
3.5field-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

83 citing papers in PubMed, 154 citations in OpenAlex.

  1. Trial
  2. Article
  3. Review
  4. Host prenylation promotes membrane association of theMicrobiology (Reading, England) · 2026
    Article
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  16. Targeting the Isoprenoid Biosynthetic Pathway in Multiple Myeloma.International journal of molecular sciences · 2022
    Review
  17. Article
  18. Article
  19. Article
  20. Article

23 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

7 authors at 1 institution in 1 country.

Anita Q GomesCell and Molecular Biology, Division of Biomedical Sciences, Faculty of Medicine, Imperial College, London SW7 2AZ, United Kingdom.
Bassam R Ali
Jose S Ramalho
Richard F Godfrey
Duarte C Barral
Alistair N Hume
Miguel C Seabra
Imperial College London · GB

Funding

Wellcome Trust
6 · The paper itself

Abstract

Rab GTPases are regulators of membrane traffic. Rabs specifically associate with target membranes via the attachment of (usually) two geranylgeranyl groups in a reaction involving Rab escort protein and Rab geranylgeranyl transferase. In contrast, related GTPases are singly prenylated by CAAX prenyl transferases. We report that di-geranylgeranyl modification is important for targeting of Rab5a and Rab27a to endosomes and melanosomes, respectively. Transient expression of EGFP-Rab5 mutants containing two prenylatable cysteines (CGC, CC, CCQNI, and CCA) in HeLa cells did not affect endosomal targeting or function, whereas mono-cysteine mutants (CSLG, CVLL, or CVIM) were mistargeted to the endoplasmic reticulum (ER) and were nonfunctional. Similarly, Rab27aCVLL mutant is also mistargeted to the ER and transgenic expression on a Rab27a null background (Rab27aash) did not rescue the coat color phenotype, suggesting that Rab27aCVLL is not functional in vivo. CAAX prenyl transferase inhibition and temperature-shift experiments further suggest that Rabs, singly or doubly modified are recruited to membranes via a Rab escort protein/Rab geranylgeranyl transferase-dependent mechanism that is distinct from the insertion of CAAX-containing GTPases. Finally, we show that both singly and doubly modified Rabs are extracted from membranes by RabGDIalpha and propose that the mistargeting of Rabs to the ER results from loss of targeting information.

Indexed as

Protein PrenylationCell MembraneEndosomesGuanine Nucleotide Dissociation InhibitorsHot TemperatureHumansMutationrab5 GTP-Binding ProteinsGuanine Nucleotide Dissociation Inhibitorsrab5 GTP-Binding Proteins

Identifiers

PMID12802062
PMCPMC165084
OpenAlexW2130552816

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.