Reaction catalyzed by arachidonate 12-lipoxygenase (1.13.11.31), arachidonate 15-lipoxygenase (1.13.11.33), arachidonate 5-lipoxygenase (1.13.11.34)

		+			=
	1-linoleoyl lysophosphatidylcholine	+		O2	=		(S)-hydroperoxy 1-linoleoyl lysophosphatidylcholine