5-脂氧合酶抗体

This gene encodes a member of the lipoxygenase gene family and plays a dual role in the synthesis of leukotrienes from arachidonic acid. The encoded protein, which is expressed specifically in bone marrow-derived cells, catalyzes the conversion of arachidonic acid to 5(S)-hydroperoxy-6-trans-8,11,14-cis-eicosatetraenoic acid, and further to the allylic epoxide 5(S)-trans-7,9-trans-11,14-cis-eicosatetrenoic acid (leukotriene A4). Leukotrienes are important mediators of a number of inflammatory and allergic conditions. Mutations in the promoter region of this gene lead to a diminished response to antileukotriene drugs used in the treatment of asthma and may also be associated with atherosclerosis and several cancers. Alternatively spliced transcript variants have been observed, but their full-length nature has not been determined.
Function : Catalyzes the first step in leukotriene biosynthesis, and thereby plays a role in inflammatory processes.
Subunit : Interacts with ALOX5AP and LTC4S.
Subcellular Location : Cytoplasm. Nucleus matrix. Nucleus membrane; Peripheral membrane protein.
Post-translational modifications : Serine phosphorylation by MAPKAPK2 is stimulated by arachidonic acid. Phosphorylation on Ser-523 by PKA has an inhibitory effect. Phosphorylation on Ser-272 prevents export from the nucleus.
Similarity : Belongs to the lipoxygenase family.
Contains 1 lipoxygenase domain.
Contains 1 PLAT domain.
Database links : UniProtKB/Swiss-Prot: P09917.2
合成与降解（Synthesis and Degradation）
5-脂氧合酶蛋白是花生四烯酸代谢途径中的一种关键酶，在恶性肿瘤的发生、发展过程中起了重要作用。抑制5-脂氧合酶及其产物的表达有可能预防和逆转恶性肿瘤的发生。