KEGG Orthology (KO) [BR:ko00001] 09100 Metabolism 09106 Metabolism of other amino acids 00480 Glutathione metabolism [PATH:ko00480] K00682 GGCT; gamma-glutamylcyclotransferase [EC:4.3.2.9] Enzymes [BR:ko01000] 4. Lyases 4.3 Carbon-nitrogen lyases 4.3.2 Amidine-lyases 4.3.2.9 gamma-glutamylcyclotransferase K00682 GGCT; gamma-glutamylcyclotransferase [EC:4.3.2.9]