Predicted to enable mannose binding activity. Predicted to be involved in several processes, including lysosomal lumen acidification; nervous system development; and signal peptide processing. Predicted to act upstream of or within lysosome organization and visual perception. Predicted to be located in several cellular components, including Golgi apparatus; perinuclear region of cytoplasm; and vacuole. Predicted to be integral component of membrane. Human ortholog(s) of this gene implicated in neuronal ceroid lipofuscinosis 5. Orthologous to human CLN5 (CLN5 intracellular trafficking protein). [provided by Alliance of Genome Resources, Apr 2022]