Figure 10 .

Control of Rho1 activity through the cell cycle. Rho1 is activated at three sites through the cell cycle: the incipient bud site and bud tip during wall expansion, the mother/bud neck during mitosis, and between the septin rings during cytokinesis. Rho1’s recruitment and activation at these sites involves different regulators and is likely to result in the activation of only a subset of effectors. The secondary septum is cell wall material that is distinct from the primary septum, which is chitin produced by Chs2. GS, glucan synthase; CAR, contractile actin ring.