9-hpode

(±)9-HpODE is a racemic mixture of the fatty acid hydroperoxide product (9(S)-HpODE) formed from lipoxygenase action on linoleic acid. It shows antimicrobial activity against various fungal and bacterial pathogens and thus may play a role in plant defense. In mammalian species, monocyte-induced oxidization of LDL generates significant amounts of esterified 9-HpODE, which is rapidly reduced to 9-HODE.

9(S)-HpODE is produced by the action of arachidonate 5-LO on linoleic acid. It can be further metabolized by potato hydroperoxide dehydratase to colneleic acid.

12-oxo-13-HOME is an oxylipin derived from linoleic acid .1It is formedviaa 13-HpODE intermediate that is produced by lipoxygenase-mediated metabolism of linoleic acid.2,3,112-oxo-13-HOME has been found in corn and sunflower seedlings.4 1.Ogorodnikova, A.V., Gorina, S.S., Mukhtarova, L.S., et al.Stereospecific biosynthesis of (9S,13S)-10-oxo-phytoenoic acid in young maize rootsBiochim. Biophys. Acta1851(9)1262-1270(2015) 2.Veldink, G.A., and Vliegenthart, J.F.G.The enzymic conversions of 13-hydroperoxy-cis-9-trans-11-octadecadienoic acid into 13-hydroxy-12-oxo-cis-9-octadecenoic acidBiochem. J.110(4)58P(1968) 3.Gardner, H.W.Sequential enzymes of linoleic acid oxidation in corn germ: Lipoxygenase and linoleate hydroperoxide isomeraseJ. Lipid Res.11(4)311-321(1970) 4.Vick, B.A., and Zimmerman, D.C.Levels of oxygenated fatty acids in young corn and sunflower plantsPlant Physiol.69(5)1103-1108(1982)