Predicted to enable several functions, including glucose binding activity; hexosyltransferase activity; and manganese ion binding activity. Predicted to be involved in glycogen biosynthetic process. Is expressed in several structures, including cardiovascular system; genitourinary system; gut; nervous system; and respiratory system. Human ortholog(s) of this gene implicated in glycogen storage disease and glycogen storage disease XV. Orthologous to human GYG1 (glycogenin 1). [provided by Alliance of Genome Resources, Apr 2022]