Essential for cell growth (PubMed:10749875). Inhibits early G-protein signaling events following pheromone stimulation (PubMed:10749875). Inhibits the folding activity of the chaperonin-containing T-complex (CCT) CCT2 which leads to inhibition of cytoskeletal actin folding (PubMed:17429077). Plays a role in cell cycle progression in G1/S phase (PubMed:17429077). Interacts with the G protein beta-gamma subunit complex (STE4-STE18 complex) (PubMed:10749875). Interacts with CCT2; this interaction leads to inhibition of CCT complex mediated actin folding (PubMed:17429077). Impaired growth, cytoskeletal disruptions caused by actin polarization defects, and abberent nuclear segregation caused by misoriented mitotic spindles (PubMed:17429077). Cells are enlarged or do not bud, caused by cell cycle arrest in G1/S phase (PubMed:17429077). Present with 7700 molecules/cell in log phase SD medium. Belongs to the phosducin family.