Functions as actin-binding component of the Arp2/3 complex which is involved in regulation of actin polymerization and together with an activating nucleation-promoting factor (NPF) mediates the formation of branched actin networks. Seems to contact the mother actin filament. Belongs to the ARPC2 family. Note: This description may include information from UniProtKB.
Protein type: Actin-binding; Cytoskeletal; Motility/polarity/chemotaxis