Genetic analysis suggests that Mig3 is a target of the Snf1 kinase in the cellular response to HU. (A) Log-phase culture of wild-type (WT) (MCY2649) and snf1Δ (MCY2916) cells transformed with either the vector pFL44 or pFL44-MIG3 (CDp20) were diluted to an OD600 of 0.2, and serial 10-fold dilutions were spotted and grown for 5 days on synthetic complete plates without uracil and containing HU at the indicated concentrations. (B) Log-phase culture of WT (MCY2649), snf1Δ (MCY2916), mig3Δ (CDY79), and snf1Δ mig3Δ (CDY80) were diluted to an OD600 of 0.2, and serial 10-fold dilutions were spotted and grown for 2 days on YPD plates containing HU at the indicated concentrations.