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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. Mainly converts arachidonic acid to (12R)-hydroperoxyeicosatetraenoic acid/(12R)-HPETE and minor stereoisomers. In the skin, acts upstream of ALOXE3 on the lineolate moiety of esterified omega-hydroxyacyl-sphingosine (EOS) ceramides to produce an epoxy-ketone derivative, a crucial step in the conjugation of omega-hydroxyceramide to membrane proteins. Therefore plays a crucial role in the synthesis of corneocytes lipid envelope and the establishment of the skin barrier to water loss. May also play a role in the regulation of the expression of airway mucins.
Gene Name: | Arachidonate 12-lipoxygenase, 12R Type |
Family/Subfamily: | Lipoxygenase |
Synonyms: | ALOX12B, 12R-LOX, 12R-lipoxygenase, Epidermis-type lipoxygenase 12 |
Target Sequences: | NM_001139 NP_001130.1 O75342 |
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