Northern blot analysis of gene expression in exponentially growing and stationary phase TPK RIM15 (SP1), TPK rim15Δ (NB13-1D), and tpk rim15Δ (NB13-14D) cells. Total RNA was extracted from log phase (L) and stationary phase (S1, 2 days; S2, 4 days after glucose depletion) cells grown in YPD medium. For further details see Fig. 1, legend.