Predicted to enable ATP binding activity and kinase activity. Predicted to be involved in endocytic recycling; lysosomal transport; and vesicle fusion. Predicted to be located in late endosome membrane and lysosomal membrane. Predicted to be part of AP-3 adaptor complex and lysosomal HOPS complex. Predicted to be active in cytoplasm and membrane. Orthologous to human VPS39 (VPS39 subunit of HOPS complex). [provided by Alliance of Genome Resources, Apr 2022]