Predicted to enable several functions, including glycogen phosphorylase activity; identical protein binding activity; and pyridoxal phosphate binding activity. Predicted to be involved in glycogen catabolic process. Predicted to be located in axon. Predicted to be active in cytoplasm. Is expressed in alimentary system; nervous system; sensory organ; and urinary system. Orthologous to human PYGB (glycogen phosphorylase B). [provided by Alliance of Genome Resources, Apr 2022]