A class of enzymes that catalyzes the oxidation of unsaturated fatty acid s with O2 to yield hydroperoxides of the fatty acid s; 5-l. catalyzes the first step in leukotriene biosynthesis, acting on arachidonate. SYN: carotene oxidase, lipoxidase.
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li·pox·y·gen·ase li-'päk-sə-jə-.nās, lī-, -.nāz n a crystallizable enzyme that catalyzes the oxidation primarily of unsaturated fatty acids or unsaturated fats by oxygen and secondarily of carotenoids to colorless substances and that occurs esp. in soybeans and cereals
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li·poxy·ge·nase (lĭ-pokґsĭ-jən-ās) [EC 1.13.11.12] an enzyme of the oxidoreductase class that catalyzes the oxidation of linoleate and related polyunsaturated fatty acids to their hydroperoxide forms. Called also lipoxidase.Medical dictionary. 2011.