
Fig. 6. Cdc13 cyclin is stabilized in the mfr1
/mfr1
mutant. (A) Strains h-/h- pat1-114/pat1-114 (Sp964) and h-/h-pat1-114/pat1-114 mfr1
/mfr1
(Sp965) were synchronized through meiosis as indicated in Fig. 2. Samples were taken every 30 minutes and protein extracts were analyzed by western blot with antibodies to cig1, cdc13 and cdc2. Exp, exponentially growing cells before nitrogen starvation. (B) Cdc2 protein kinase assays after immunoprecipitation with cdc2 antibodies. Samples were taken every hour.