arp2/3 inhibition protein,arpin,C15orf38,UPF0552 protein C15orf38.
Regulates actin polymerization by inhibiting the actin-nucleating activity of the Arp2/3 complex, the function is competetive with nucleation promoting factors. Participates in an incoherent feedforward loop at the lamellipodium tip where it inhibits the