Predicted to enable actin filament binding activity. Predicted to be a structural constituent of cytoskeleton. Involved in several processes, including actin filament network formation; orbitofrontal cortex development; and smooth muscle cell migration. Located in endosome and growth cone. Biomarker of congenital hypothyroidism. Orthologous to human ARPC5 (actin related protein 2/3 complex subunit 5). [provided by Alliance of Genome Resources, Apr 2022]