ArticleMolecular biology of the cell2003
Gef1p, a new guanine nucleotide exchange factor for Cdc42p, regulates polarity in Schizosaccharomyces pombe.
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 48 papers.
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Who cites it
48 citing papers in PubMed, 90 citations in OpenAlex.
- Temperature-specific regulation of the NDR kinase Orb6 by the MAPK Sty1 to promote heat stress resilience.Journal of cell science · 2026Article
- Rax1/2 promote memory of growth by early Ras1 activation to maintain polarity across generations.bioRxiv : the preprint server for biology · 2025Article
- Rho1 and Rgf1 establish a new actin-dependent signal to determine growth poles in yeast independently of microtubules and the Tea1-Tea4 complex.PLoS biology · 2024Article
- Cdc42 mobility and membrane flows regulate fission yeast cell shape and survival.Nature communications · 2024Article
- Arp2/3-dependent endocytosis ensures Cdc42 oscillations by removing Pak1-mediated negative feedback.The Journal of cell biology · 2024Article
- The Arp2/3 complex promotes periodic removal of Pak1-mediated negative feedback to facilitate anticorrelated Cdc42 oscillations.bioRxiv : the preprint server for biology · 2023Article
- Identification of a small RhoA GTPase inhibitor effective in fission yeast and human cells.Open biology · 2023Article
- The Cdc42 GAP Rga6 promotes monopolar outgrowth of spores.The Journal of cell biology · 2023Article
- Cdc42 GTPase-activating proteins (GAPs) regulate generational inheritance of cell polarity and cell shape in fission yeast.Molecular biology of the cell · 2021Article
- Cdc42 reactivation at growth sites is regulated by local cell-cycle-dependent loss of its GTPase-activating protein Rga4 in fission yeast.Journal of cell science · 2021Article
- Eng2, a new player involved in feedback loop regulation of Cdc42 activity in fission yeast.Scientific reports · 2021Article
- Wake-up alarm: virtual time-lapse gene expression landscape illuminates mechanisms underlying dormancy breaking of germinating spores.Current genetics · 2021Review
- Cdc42 promotes Bgs1 recruitment for septum synthesis and glucanase localization for cell separation during cytokinesis in fission yeast.Small GTPases · 2021Article
- Review
- Activation of Cdc42 GTPase upon CRY2-Induced Cortical Recruitment Is Antagonized by GAPs in Fission Yeast.Cells · 2020Article
- Optogenetics reveals Cdc42 local activation by scaffold-mediated positive feedback and Ras GTPase.PLoS biology · 2020Article
- A novel interplay between GEFs orchestrates Cdc42 activity during cell polarity and cytokinesis in fission yeast.Journal of cell science · 2019Article
- Article
- Conserved NDR/LATS kinase controls RAS GTPase activity to regulate cell growth and chronological lifespan.Molecular biology of the cell · 2019Article
- A Cdc42 GEF, Gef1, through endocytosis organizes F-BAR Cdc15 along the actomyosin ring and promotes concentric furrowing.Journal of cell science · 2019Article
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Schizosaccharomyces pombe cdc42(+) regulates cell morphology and polarization of the actin cytoskeleton. Scd1p/Ral1p is the only described guanine nucleotide exchange factor (GEF) for Cdc42p in S. pombe. We have identified a new GEF, named Gef1p, specifically regulating Cdc42p. Gef1p binds to inactive Cdc42p but not to other Rho GTPases in two-hybrid assays. Overexpression of gef1(+) increases specifically the GTP-bound Cdc42p, and Gef1p is capable of stimulating guanine nucleotide exchange of Cdc42p in vitro. Overexpression of gef1(+) causes changes in cell morphology similar to those caused by overexpression of the constitutively active cdc42G12V allele. Gef1p localizes to the septum. gef1(+) deletion is viable but causes a mild cell elongation and defects in bipolar growth and septum formation, suggesting a role for Gef1p in the control of cell polarity and cytokinesis. The double mutant gef1delta scd1delta is not viable, indicating that they share an essential function as Cdc42p activators. However, both deletion and overexpression of either gef1(+) or scd1(+) causes different morphological phenotypes, which suggest different functions. Genetic evidence revealed a link between Gef1p and the signaling pathway of Shk1/Orb2p and Orb6p. In contrast, no genetic interaction between Gef1p and Shk2p-Mkh1p pathway was observed.
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