Reported enzyme(s):
1.17.1.4 xanthine dehydrogenase
1.17.3.2 xanthine oxidase

Possible enzyme(s):

Reported enzyme(s):
2.4.2.1 purine-nucleoside phosphorylase
2.4.2.15 guanosine phosphorylase
2.4.2.4 thymidine phosphorylase
2.4.2.8 hypoxanthine phosphoribosyltransferase
3.2.2.1 purine nucleosidase
3.2.2.12 inosinate nucleosidase
3.2.2.2 inosine nucleosidase
3.2.2.8 ribosylpyrimidine nucleosidase

Possible enzyme(s):

Reported enzyme(s):
3.5.4.2 adenine deaminase

Possible enzyme(s):