Cited by 746Cellular transport and secretionProtein Kinase Regulation and GTPase SignalingFungal and yeast genetics research

Inhibition by brefeldin A of a Golgi membrane enzyme that catalyses exchange of guanine nucleotide bound to ARF

Helms, J. Bernd, Rothman, James E.·1992·Nature

Abstract

A wide variety of membrane transformations important in intracellular transport are inhibited by the fungal metabolite brefeldin A (refs 1-4), implying that the target for this drug is central to the formation and maintenance of subcellular compartments. Brefeldin A added to cells causes the rapid and reversible dissociation of a Golgi-associated peripheral membrane protein (M(r) 110,000) which was found to be identical to one of the subunits of the coat of Golgi-derived (non-clathrin) coated vesicles, beta-COP, implying that brefeldin A prevents transport by blocking the assembly of coats and thus the budding of enclosed vesicles. In addition to the coatomer (a cytosol-derived complex of seven polypeptide chains, one of which is beta-COP), the non-clathrin (COP) coat of Golgi-derived vesicles contains stoichiometric amounts of a small (M(r) approximately 20,000) GTP-binding protein, the ADP-ribosylation factor (ARF). Binding of ARF to Golgi membranes is necessary before coatomer/beta-COP can bind these membranes (ref. 12; and D. J. Palmer et al., manuscript submitted), so the primary effect of brefeldin A seems to be on the reaction responsible for ARF binding. Indeed, like beta-COP, ARF is dissociated from the Golgi complex by treatment with brefeldin A and brefeldin A prevents ARF from associating in vitro, but the mechanism of this action by brefeldin A has been unclear. Here we report the discovery of an enzyme in a Golgi-enriched fraction that catalyses guanine nucleotide (GDP-GTP) exchange on ARF-1 protein, and which is inhibited by brefeldin A. We suggest that activation of ARF proteins for membrane localization by compartmentalized exchange enzymes is in general the first committed step in membrane transformation pathways.

Integrity signals

Registry

Crossref · 10.1038/360352a0

Cites

31 of 31 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Jugular vein infusion of GLP-2 increases SGLT-1 protein abundance and the rate of SGLT-1-dependent glucose transport in the apical membrane of jejunal enterocytes in rats, abolished by brefeldin.

    “Jugular vein infusion of GLP-2 increases the abundance of SGLT-1 protein and rate of SGLT-1-dependent glucose transport in the apical membrane of jejunal enterocytes in rats, a response abolished when protein translocation is inhibited with brefeldin (29,59).”

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Helms, J. B., & Rothman, J. E.
Venue
Nature
Published
1992-11
Volume
360
Issue
6402
Pages
352-354
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2092000023
Cited by
746
References
31
Citations by year
2026: 10 · 2025: 15 · 2024: 15 · 2023: 20 · 2022: 19 · 2021: 14 · 2020: 14 · 2019: 17 · 2018: 19 · 2017: 14 · 2016: 7 · 2015: 13 · 2014: 13 · 2013: 15 · 2012: 11
FWCI
18.78
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
Keywords
brefeldin A, ADP-ribosylation factor, guanine nucleotide exchange, Golgi apparatus, beta-COP, coatomer, vesicle budding, intracellular transport, G proteins
MeSH terms
Animals, Cyclopentanes, Golgi Apparatus, Guanine Nucleotides, Guanosine Diphosphate, Guanosine Triphosphate, Guanylyl Imidodiphosphate, Intracellular Membranes, Liver, Membrane Proteins, Microtubule-Associated Proteins, Recombinant Proteins, Guanosine 5'-O-(3-Thiotriphosphate), GTP-Binding Proteins, Brefeldin A, ADP-Ribosylation Factors, Coatomer Protein, Rats

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review