Predicted to enable identical protein binding activity; protein kinase binding activity; and spectrin binding activity. Acts upstream of or within melanosome transport. Located in growth cone. Is expressed in several structures, including adipose tissue; alimentary system; early conceptus; genitourinary system; and nervous system. Orthologous to human DCTN2 (dynactin subunit 2). [provided by Alliance of Genome Resources, Apr 2022]