Predicted to contribute to small GTPase binding activity. Predicted to be involved in several processes, including Rac protein signal transduction; cortical actin cytoskeleton organization; and positive regulation of cellular component organization. Predicted to act upstream of or within several processes, including apical protein localization; embryonic morphogenesis; and segmentation. Predicted to be located in lamellipodium and ruffle. Predicted to be part of SCAR complex and filamentous actin. Predicted to be active in postsynapse. Orthologous to human NCKAP1 (NCK associated protein 1). [provided by Alliance of Genome Resources, Apr 2022]