Enables glucosylceramidase activity. Involved in several processes, including regulation of water loss via skin; response to dexamethasone; and skin morphogenesis. Located in lysosome. Human ortholog(s) of this gene implicated in Gaucher's disease (multiple); Lewy body dementia; Parkinson's disease (multiple); and Parkinsonism. Orthologous to human GBA (glucosylceramidase beta). [provided by Alliance of Genome Resources, Apr 2022]