ID 4.3.2.7 DE glutathione-specific gamma-glutamylcyclotransferase. AN gamma-glu-GCG. CA glutathione = 5-oxo-L-proline + L-cysteinylglycine. CC -!- The enzyme, found in bacteria, fungi and animals, is specific for CC glutathione (cf. EC 4.3.2.9). CC -!- The enzyme acts as a cyclotransferase, cleaving the amide bond via CC transamidation using the alpha-amine of the L-glutamyl residue, CC releasing it as the cyclic 5-oxo-L-proline. DR Q5SPB6, CHAC1_DANRE; Q9BUX1, CHAC1_HUMAN; Q8R3J5, CHAC1_MOUSE; DR B3STU3, CHAC1_RAT ; Q0IIH4, CHAC2_BOVIN; Q5ZI66, CHAC2_CHICK; DR Q4KMJ1, CHAC2_DANRE; Q8WUX2, CHAC2_HUMAN; Q9CQG1, CHAC2_MOUSE; DR Q641Z5, CHAC2_RAT ; Q5PPV4, CHAC2_XENLA; P39163, CHAC_ECOLI ; DR P87305, CHAC_SCHPO ; P32656, CHAC_YEAST ; //