Predicted to enable ATP binding activity. Predicted to be involved in mesenchyme migration; positive regulation of gene expression; and vascular associated smooth muscle contraction. Predicted to be located in several cellular components, including filopodium; lamellipodium; and myosin filament. Predicted to be part of dynactin complex. Predicted to be active in cytoplasm. Human ortholog(s) of this gene implicated in megacystis-microcolon-intestinal hypoperistalsis syndrome. Orthologous to human ACTG2 (actin gamma 2, smooth muscle). [provided by Alliance of Genome Resources, Apr 2022]