Enables phosphoglycerate mutase activity. Acts upstream of or within Notch signaling pathway and glycolytic process. Predicted to be located in cytosol and nucleus. Is expressed in several structures, including alimentary system; brain; genitourinary system; limb mesenchyme; and sensory organ. Human ortholog(s) of this gene implicated in myoglobinuria. Orthologous to human PGAM2 (phosphoglycerate mutase 2). [provided by Alliance of Genome Resources, Apr 2022]