Predicted to enable ATP binding activity and actin binding activity. Predicted to contribute to actin filament binding activity. Involved in Arp2/3 complex-mediated actin nucleation; embryonic morphogenesis; and epithelial cell migration. Predicted to be located in cell cortex. Predicted to be part of Arp2/3 protein complex. Expressed in Q cell; anchor cell; apoptotic cell; seam cell; and socket cell. Human ortholog(s) of this gene implicated in colorectal carcinoma and lung disease. Is an ortholog of human ACTR2 (actin related protein 2).