Enables AMP binding activity. Involved in cellular response to insulin stimulus and lactation. Predicted to be located in cytosol and nucleoplasm. Predicted to be active in cytoplasm. Biomarker of hepatocellular carcinoma. Human ortholog(s) of this gene implicated in adenine phosphoribosyltransferase deficiency. Orthologous to human APRT (adenine phosphoribosyltransferase). [provided by Alliance of Genome Resources, Apr 2022]