CDC42 small effector protein 1 (CDC42SE1)

Probably involved in the organization of the actin cytoskeleton by acting downstream of CDC42, causing actin filament assembly. Alters CDC42-induced cell shape changes.

In activated T-cells, may play a part in CDC42-mediated F-actin accumulation at the immunological synapse. May play a role in early contractile events in phagocytosis in macrophages.