Reaction: tetrahydroxypteridine = xanthine-8-carboxylate
Systematic name: tetrahydroxypteridine lyase (isomerizing)
Links to other databases: BRENDA, EXPASY, GTD, KEGG, Metacyc, PDB, CAS registry number: 37318-54-0
References:
1. McNutt, W.S. and Damle, S.P. Tetraoxypteridine isomerase. J. Biol. Chem. 239 (1964) 4272-4279.