Reaction catalyzed by linoleate 11-lipoxygenase (1.13.11.45)

		+			=			+
	gamma-linolenic acid	+		O2	=		(6Z,9Z,11E)-(13)-hydroperoxyoctadecatrienoic acid	+		(6Z,9Z,12Z)-(11)-hydroperoxyoctadecatrienoic acid