KEGG Orthology (KO) [BR:hsa00001] 09100 Metabolism 09104 Nucleotide metabolism 00230 Purine metabolism [PATH:hsa00230] 2766 GMPR; guanosine monophosphate reductase K00364 guaC; GMP reductase [EC:1.7.1.7] Enzymes [BR:hsa01000] 1. Oxidoreductases 1.7 Acting on other nitrogenous compounds as donors 1.7.1 With NAD+ or NADP+ as acceptor 1.7.1.7 GMP reductase 2766 GMPR; guanosine monophosphate reductase K00364 guaC; GMP reductase [EC:1.7.1.7]