Figure 2.
Overexpression of Mad2p reduces Cdc20p levels in the presence of nocodazole. (A) 8mycCDC20, PGAL-pds1Δdb cells containing PGAL vector alone or PGAL-MAD2 (RHC401 and RHC402) were first arrested at G1 with α-factor, then washed and released into YEPR in the presence or absence of nocodazole at 30°C. When ∼10% of the cells began to bud, 2% galactose was added to the medium. Samples were taken at 30-min intervals after galactose addition for immunoblot analysis. Mad1p blots serve as loading controls. (B) Signals of 8mycCdc20p in A were quantified and plotted against time.