The Arp2/3 complex is composed of seven subunits, such as Arp2, Arp3, p41-Arc, p34-Arc, p21-Arc, p20-Arc, and p16-Arc (p complex). Among all the subunits, ARPC1B is a novel member of the Sop2 family of WD (tryptophan and aspartate) repeat-containing proteins. Synonyms: Anti-Actin-related protein 2/3...