Description
Catalyzes the phosphorolytic breakdown of the N-glycosidic bond in the beta-(deoxy)ribonucleoside molecules, with the formation of the corresponding free purine bases and pentose-1-phosphate (PubMed: 9305964, PubMed: 23438750). Preferentially acts on 6-oxopurine nucleosides including inosine and guanosine (PubMed: 9305964)