The Wiskott-Aldrich Syndrome Proteins (WASP) are a family of nucleation-promoting factors. WASP proteins share a conserved Arp2/3-complex-activating C-terminal VCA/WCA (verprolin/WASP, cofilin, acidic) domain. WASP members participate in cytoskeleton organization, notably through the stimulation of the actin-nucleating activity of the Arp2/3 complex. (Adapted from
FBrf0230860 and
FBrf0217509).