Predicted to enable ATP hydrolysis activity; protein C-terminus binding activity; and protein homodimerization activity. Involved in late endosomal microautophagy; multivesicular body assembly; and viral budding from plasma membrane. Acts upstream of or within cholesterol transport; endosome organization; and potassium ion transport. Located in cytosol. Orthologous to human VPS4B (vacuolar protein sorting 4 homolog B). [provided by Alliance of Genome Resources, Apr 2022]