ArticleThe EMBO journal1995
The GTPase Ypt7p of Saccharomyces cerevisiae is required on both partner vacuoles for the homotypic fusion step of vacuole inheritance.
Article in The EMBO journal, 1995. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 140 papers.
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140 citing papers in PubMed, 270 citations in OpenAlex.
- Functional assembly of the Qc-SNARE with Sec18 and Sec17 on membranes.Molecular biology of the cell · 2026Article
- Retromer Regulates Macro- and Micro-Autophagy via Distinct Vacuolar Proteases in the Rice Blast Fungus.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Sec18 ATP hydrolysis selectively releases Sec17 fromMolecular biology of the cell · 2025Article
- Membrane fusion reactions limited by defective SNARE zippering or stiff lipid fatty acyl composition have distinct requirements for Sec17, Sec18, and adenine nucleotide.bioRxiv : the preprint server for biology · 2024Article
- Sec18 binds the tethering/SM complex HOPS to engage the Qc-SNARE for membrane fusion.Molecular biology of the cell · 2024Article
- Loss of the putative Rab GTPase, Ypt7, impairs the virulence ofFrontiers in microbiology · 2024Article
- MARCKS Effector Domain, a reversible lipid ligand, illuminates late stages of membrane fusion.Molecular biology of the cell · 2023Article
- Efficient fusion requires a membrane anchor on the vacuolar Qa-SNARE.Molecular biology of the cell · 2023Article
- PI3P regulates multiple stages of membrane fusion.Molecular biology of the cell · 2023Article
- A two-tiered system for selective receptor and transporter protein degradation.PLoS genetics · 2022Article
- Vps501, a novel vacuolar SNX-BAR protein cooperates with the SEA complex to regulate TORC1 signaling.Traffic (Copenhagen, Denmark) · 2022Article
- Review
- Enhancement of HSA-pFSHβ production by disruptingFrontiers in microbiology · 2022Article
- Phosphatidylinositol and phosphatidylinositol-3-phosphate activate HOPS to catalyze SNARE assembly, allowing small headgroup lipids to support the terminal steps of membrane fusion.Molecular biology of the cell · 2021Article
- Membrane dynamics and protein targets of lipid droplet microautophagy during ER stress-induced proteostasis in the budding yeast,Autophagy · 2021Article
- Vacuolar H+-ATPase dysfunction rescues intralumenal vesicle cargo sorting in yeast lacking PI(3,5)P2 or Doa4.Journal of cell science · 2021Article
- Review
- Sentinel interaction mapping - a generic approach for the functional analysis of human disease gene variants using yeast.Disease models & mechanisms · 2020Article
- Vps39 is required for ethanolamine-stimulated elevation in mitochondrial phosphatidylethanolamine.Biochimica et biophysica acta. Molecular and cell biology of lipids · 2020Article
- A Rab prenyl membrane-anchor allows effector recognition to be regulated by guanine nucleotide.Proceedings of the National Academy of Sciences of the United States of America · 2020Article
80 more citing papers are in PubMed but not listed here.
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Authors and funding
5 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In the budding yeast Saccharomyces cerevisiae, vacuoles are inherited by the projection of vesicles and tubules from the mother-cell vacuole into the growing daughter cell during the S phase. These vesicles then fuse and form the daughter-cell organelle. We have described previously in vitro reactions of the formation of vacuole-derived segregation structures and of vacuole-vacuole fusion. Homotypic vacuole fusion requires cytosol, ATP and a physiological temperature, and is sensitive to GTPase inhibitors. These reactions are divisible into early stages which require ATP and cytosol, and late stages which require neither. Here, we report that Ypt7p, a ras-like GTPase implicated previously in endocytosis in yeast, is largely localized to the vacuole and is required on both partners during the in vitro vacuole fusion reaction. The in vitro fusion reaction is inhibited either by Gdi1p, which extracts the GDP-bound form of ras-like GTPases from membranes, or by antibodies specific for Ypt7p. The presence of anti-Ypt7p during the early stages of the reaction inhibits the development of cytosol- and ATP-independent intermediates. Although cytosol and ATP are no longer needed for the late stage of vacuole inheritance in vitro, the inhibition of this late stage by anti-Ypt7p or Gdi1p requires the continued presence of ATP and cytosol. Ypt7p is the first GTPase for which a direct role in organelle inheritance has been established.
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