Predicted to enable several functions, including glycogen (starch) synthase activity; phosphatase activity; and polysaccharide binding activity. Predicted to be involved in several processes, including carbohydrate phosphorylation; dephosphorylation; and glycogen metabolic process. Predicted to act upstream of or within several processes, including glycogen biosynthetic process; habituation; and regulation of cellular protein metabolic process. Predicted to be located in several cellular components, including cytoplasmic side of rough endoplasmic reticulum membrane; dendrite; and perikaryon. Predicted to be part of polysome. Predicted to be active in cytoplasm and nucleus. Human ortholog(s) of this gene implicated in Lafora disease and progressive myoclonus epilepsy. Orthologous to human EPM2A (EPM2A glucan phosphatase, laforin). [provided by Alliance of Genome Resources, Apr 2022]