Predicted to enable S-methyl-5-thioadenosine phosphorylase activity. Predicted to be involved in L-methionine salvage from methylthioadenosine. Predicted to be active in cytosol. Is expressed in spermatozoon. Human ortholog(s) of this gene implicated in biliary tract benign neoplasm and diaphyseal medullary stenosis with malignant fibrous histiocytoma. Orthologous to human MTAP (methylthioadenosine phosphorylase).