BAIT
CDC42
Rho family GTPase CDC42, L000000276, YLR229C
Small rho-like GTPase; essential for establishment and maintenance of cell polarity; plays a role late in cell fusion via activation of key cell fusion regulator Fus2p; mutants have defects in the organization of actin and septins
GO Process (13)
GO Function (1)
GO Component (8)
Gene Ontology Biological Process
- budding cell apical bud growth [IMP]
- budding cell isotropic bud growth [IMP]
- conjugation with cellular fusion [IMP]
- establishment of cell polarity [IMP]
- invasive growth in response to glucose limitation [IMP]
- pheromone-dependent signal transduction involved in conjugation with cellular fusion [IGI, IMP]
- positive regulation of exocytosis [IGI, IMP, IPI]
- positive regulation of pseudohyphal growth [IMP]
- regulation of exit from mitosis [IMP]
- regulation of exocyst localization [IMP]
- regulation of initiation of mating projection growth [IMP]
- regulation of vacuole fusion, non-autophagic [IMP]
- septin ring organization [IMP]
Gene Ontology Molecular Function
Gene Ontology Cellular Component
Saccharomyces cerevisiae (S288c)
PREY
MSB4
L000003919, YOL112W
GTPase-activating protein of the Ras superfamily; acts primarily on Sec4p, localizes to the bud site and bud tip; msb3 msb4 double mutation causes defects in secretion and actin organization; similar to the TBC-domain Tre2 oncogene; MSB4 has a paralog, MSB3, that arose from the whole genome duplication
GO Process (2)
GO Function (1)
GO Component (3)
Gene Ontology Biological Process
Gene Ontology Molecular Function
Gene Ontology Cellular Component
Saccharomyces cerevisiae (S288c)
Reconstituted Complex
An interaction is detected between purified proteins in vitro.
Publication
Regulation of cell polarity by interactions of Msb3 and Msb4 with Cdc42 and polarisome components.
In Saccharomyces cerevisiae, polarized growth depends on interactions between the actin cytoskeleton and the secretory machinery. Here we show that the Rab GTPase-activating proteins (GAPs) Msb3 and Msb4 interact directly with Spa2, a scaffold protein of the "polarisome" that also interacts with the formin Bni1. Spa2 is required for the polarized localization of Msb3 and Msb4 at the bud tip. ... [more]
Mol. Cell. Biol. Oct. 01, 2005; 25(19);8567-80 [Pubmed: 16166638]
Throughput
- Low Throughput
Related interactions
| Interaction | Experimental Evidence Code | Dataset | Throughput | Score | Curated By | Notes |
|---|---|---|---|---|---|---|
| CDC42 MSB4 | Synthetic Lethality Synthetic Lethality A genetic interaction is inferred when mutations or deletions in separate genes, each of which alone causes a minimal phenotype, result in lethality when combined in the same cell under a given condition. | Low | - | BioGRID | 520005 |
Curated By
- BioGRID