Predicted to enable protein homodimerization activity. Involved in regulation of autophagy. Located in cytosol; membrane; and nucleus. Is expressed in several structures, including brain; genitourinary system; liver; lung; and spleen. Human ortholog(s) of this gene implicated in cataract 31 multiple types. Orthologous to human CHMP4B (charged multivesicular body protein 4B). [provided by Alliance of Genome Resources, Apr 2022]