Predicted to enable PDZ domain binding activity; enzyme binding activity; and guanyl-nucleotide exchange factor activity. Predicted to be involved in cell chemotaxis; negative regulation of vascular associated smooth muscle contraction; and positive regulation of vascular associated smooth muscle cell migration. Located in stereocilium. Is expressed in dorsal aorta; ovary; and testis. Orthologous to human DOCK4 (dedicator of cytokinesis 4). [provided by Alliance of Genome Resources, Apr 2022]