ID   4.3.2.9
DE   gamma-glutamylcyclotransferase.
AN   GGCT.
CA   an alpha-(gamma-L-glutamyl)-L-amino acid = 5-oxo-L-proline + an L-alpha-
CA   amino acid.
CC   -!- The enzyme, found in animals and plants, acts on derivatives of
CC       L-glutamate, L-2-aminobutanoate, L-alanine and glycine.
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.
CC   -!- Formerly EC 2.3.2.4.
DR   Q2UPC2, ACLK_ASPOR ;  Q8GY54, GCT21_ARATH;  Q84MC1, GCT22_ARATH;
DR   Q84QC1, GCT23_ARATH;  Q32LE4, GGCT_BOVIN ;  O75223, GGCT_HUMAN ;
DR   Q9D7X8, GGCT_MOUSE ;  E9R9Y3, GLIK_ASPFU ;  M1W855, TCPK_CLAP2 ;
DR   A0A1U9YI11, VERK_CLORO ;
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