Actin-related protein 3 is a protein that in humans is encoded by the ACTR3 gene. [5]
The specific function of this gene has not yet been determined; however, the protein it encodes is known to be a major constituent of the ARP2/3 complex. This complex is located at the cell surface and is essential to cell shape and motility through lamellipodial actin assembly and protrusion. [6]