Hypoxanthine PhosphoribosyltransferasePentosyltransferasesLesch-Nyhan SyndromePurine-Pyrimidine Metabolism, Inborn ErrorsHypoxanthineHypoxanthinesAdenine PhosphoribosyltransferaseXanthineXanthine OxidaseOrotate PhosphoribosyltransferaseXanthinesXanthine DehydrogenaseNicotinamide PhosphoribosyltransferaseGuaninePhosphoribosyl PyrophosphateATP PhosphoribosyltransferaseAzaguaninePurinesAnthranilate PhosphoribosyltransferaseGuanine NucleotidesAdenineInosineInosine MonophosphatePurine NucleotidesAllopurinolInosine NucleotidesThioguaninePentosephosphatesGuanosine MonophosphateUric AcidAcrylamidesGuanine Nucleotide Exchange FactorsNicotinamide MononucleotideKineticsAzaserinePurine-Nucleoside PhosphorylaseAmidophosphoribosyltransferaseOxypurinolMutationOrotidine-5'-Phosphate Decarboxylase