Enables microtubule binding activity. Predicted to be involved in several processes, including endosomal vesicle fusion; lysosomal transport; and protein targeting to vacuole. Predicted to act upstream of or within autophagy and protein transport. Located in early endosome; late endosome; and microtubule cytoskeleton. Human ortholog(s) of this gene implicated in autosomal recessive cerebellar ataxia. Orthologous to human VPS41 (VPS41 subunit of HOPS complex). [provided by Alliance of Genome Resources, Apr 2022]