Rho1p and Cdc42p act after Ypt7p to regulate vacuole docking.
Eitzen G, Thorngren N, Wickner W, EMBO J, 2001 Oct 15 - link

Sequential action of two GTPases to promote vacuole docking and fusion.
Eitzen G, Will E, Gallwitz D, Haas A, Wickner W, EMBO J, 2000 Dec 15 - link