Arachidonate 8S-lipoxygenase (Alox8)

Non-heme iron-containing dioxygenase that catalyzes the stereo-specific peroxidation of free and esterified polyunsaturated fatty acids generating a spectrum of bioactive lipid mediators. From arachidonate mainly produces (8S)-HPETE and in addition, minor products derived from (8S)-HPETE itself that may consist of leukotriene A4 and 8,15-diHPETE.

With arachidonate as substrate, has no detectable 15S-lipoxygenase activity and only displays a 8S-lipoxygenase activity. However, it may have a 15S-lipoxygenase activity with (8S)-HPETE to produce (8S,15S)-diHPETE.