Reaction catalyzed by gamma-glutamyltransferase (2.3.2.2)

		+		glucana	=			+
	5-L-glutamyl 3-carboxy-4-nitroanilide	+		glucana	=		5-amino-2-nitrobenzoic acid	+		N-(3-carboxy-4-nitrophenyl)-L-glutaminyl-L-glutamic acid