Deletion of GGA2 in combination
with gga1Δ or any AP β subunit gene deletion does
not affect ALP transport to the vacuole. (A) Wild-type (WT, SEY6210;
lanes 1–5), gga2Δ (GPY2149; lanes 6–10),
gga1Δ gga2Δ (GPY2385; lanes 11–15)
cells. (B) apl2Δ gga2Δ (GPY2420–3C;
1–5), apl1Δ gga2Δ (GPY2422–9D;
lanes 6–10), and apl6Δ gga2Δ
(GPY2425–29C; lanes 11–15) cells were metabolically labeled for 10
min at 30°C and then subjected to a chase for the indicated times.
ALP was immunoprecipitated from cell lysates and analyzed by SDS-PAGE
and fluorography. Precursor (proALP) and mature (mALP) forms are
indicated.