Deletion of GGA2 in combination
with gga1Δ or chc1-ts affects
α-factor maturation. chc1-ts (GPY982; lane 1),
chc1-ts gga2Δ (GPY2273; lane 2), chc1-ts
gga1Δ (GPY2275; lane 3), gga2Δ (GPY2149;
lane 4), gga1Δ (GPY2151; lane 5), and
gga1Δ gga2Δ (GPY2385; lane 6) cells
were metabolically labeled at 24°C for 45 min, and secreted
α-factor was immunoprecipitated from the culture supernatants.
Samples were analyzed by SDS-PAGE and fluorography. Precursor levels of
α-factor were quantified by phosphoimage analysis.