Compound as reactive (5)
xanthine + 2-oxoglutarate + oxygen → urate + succinate + CO2
xanthine + H2O + oxygen → hydrogen peroxide + urate
diphosphate + XMP ← 5-phospho-α-D-ribose 1-diphosphate + xanthine
xanthine + S-adenosyl-L-methionine → S-adenosyl-L-homocysteine + 3-methylxanthine + H+
xanthine + H2O → H+ + 5-ureidoimidazole-4-carboxylate
Compound as product (8)
H2O + NAD+ + hypoxanthine → xanthine + NADH + H+
NAD(P)H + 1-methylxanthine + H+ + oxygen → xanthine + H2O + NAD(P)+ + formaldehyde
H2O + hypoxanthine → 2 H+ + xanthine
3-methylxanthine + NADH + H+ + oxygen → xanthine + H2O + formaldehyde + NAD+
NAD(P)H + 3-methylxanthine + H+ + oxygen → xanthine + H2O + NAD(P)+ + formaldehyde
7-methylxanthine + NAD(P)H + H+ + oxygen → xanthine + H2O + NAD(P)+ + formaldehyde
H2O + H+ + isoguanine → xanthine + ammonium
H2O + H+ + guanine → xanthine + ammonium
Reversible reaction (2)
xanthosine + phosphate ↔ xanthine + α-D-ribose-1-phosphate
xanthine + H2O + NAD+ ↔ NADH + urate + H+