Arp2/3 protein complex has been implicated in the control of actin polymerisation in cells. The human complex consists of seven subunits which include the actin related Arp2 and Arp3, and five others referred to as p41-Arc, p34-Arc, p21-Arc, p20-Arc, and p16-Arc [1]. This family represents the p34-Arc subunit.

1: The human Arp2/3 complex is composed of evolutionarily conserved subunits and is localized to cellular regions of dynamic actin filament assembly. Welch MD, DePace AH, Verma S, Iwamatsu A, Mitchison TJ; J Cell Biol 1997;138:375-384. PMID:9230079