Predicted to enable actin filament binding activity. Acts upstream of or within several processes, including blood vessel lumenization; cartilage development; and neural retina development. Predicted to be located in cytoskeleton and membrane. Predicted to be active in cytoplasm and plasma membrane. Is expressed in several structures, including Kupffer's vesicle; forerunner cell group; head mesenchyme; nervous system; and neural plate. Orthologous to human MARCKSL1 (MARCKS like 1).