Enables microtubule binding activity and microtubule motor activity. Involved in brain development and vesicle transport along microtubule. Located in axon cytoplasm and perinuclear region of cytoplasm. Part of cytoplasmic dynein complex. Colocalizes with piccolo-bassoon transport vesicle. Orthologous to human DYNC1I1 (dynein cytoplasmic 1 intermediate chain 1). [provided by Alliance of Genome Resources, Apr 2022]