GAL-CLA4t expression delays MEN activation and prevents proper localization of Lte1 at the bud cortex. (A) Serial dilutions of 1X GAL-CLA4t (ySP2622), cdc14–3 (ySP284), cdc14–3 1X GAL-CLA4t (ySP3028), cdc14–3 swe1Δ 1X GAL-CLA4t (ySP3047), cdc15–2 (ySP51), cdc15–2 1X GAL-CLA4t (ySP3022), and cdc15–2 swe1Δ 1X GAL-CLA4t (ySP3023) strains were spotted on either YEPD (−Gal) or YEPRG (+Gal) plates and incubated for 2 d at 26°C. (B) Wild-type, cdc15–2, and cdc14–3 cells either lacking (W303, ySP51, and ySP284) or carrying (ySP2622, ySP3022, and ySP3028) one copy of GAL-CLA4t were grown in YEPR, arrested in G1 with α-factor, and released in YEPRG (t = 0). Samples were collected every 30' for FACS® analysis of the DNA contents (not depicted) and to score nuclear division. (C) Wild-type (ySP3222), 1X GAL-CLA4t (ySP3220, not depicted), and 4X GAL-CLA4t (ySP3221) cells were treated as in B. Samples were collected every 15' for 150' for FACS® analysis of the DNA contents (not depicted) and to score localization of GFP-Lte1 and actin by rhodamine-phalloidin. Photographs were taken 75' after release. Bar, 5 μm.