Reaction catalyzed by gamma-glutamyltransferase (2.3.2.2)

		+			=			+
	D-gamma-glutamyl-S-([4-[(4-aminophenyl)methyl]phenyl]carbamoyl)-L-cysteinylglycine	+		glycylglycine	=		S-([4-[(4-aminophenyl)methyl]phenyl]carbamoyl)-L-cysteinylglycine	+		L-Glu-Gly-Gly