Plays a role during growth of the oocyte. Component of the WAVE complex composed of Hem/Kette, Scar/Wave and Sra-1/Cyfip where it binds directly to the C-terminus of Sra-1. Expressed maternally in the oocyte and shows uniform expression during the first half of embryogenesis, but becomes restricted to the brain and the nervous system during late embryogenesis. Belongs to the HEM-1/HEM-2 family.