Probably involved in the organization of the actin cytoskeleton. May act downstream of CDC42 to induce actin filament assembly leading to cell shape changes. Induces pseudopodia formation, when overexpressed in fibroblasts. Interacts with CDC42 and RHOQ, in a GTP-dependent manner. Not detected in any of the adult tissues tested. May be expressed only in fetal or embryonic tissues. Belongs to the BORG/CEP family.