Abstract
Leukotrienes are considered as important mediators in a variety of allergic and inflammatory disorders. As discussed elsewhere in this volume, these lipid mediators exert a wide range of biological effects, for example activation of leukocytes and contraction of smooth muscles, particularly in the airways, and microcirculation. In the biosynthesis of leukotrienes, free arachidonic acid is converted by 5-lipoxygenase into 5(S)-trans-5,6-oxido-7,9-trans-11,14-cis-eicosatetraenoic acid, termed leukotriene A4 (LTA4). This highly unstable epoxide intermediate may subsequently be hydrolyzed into 5(S),12(R)-dihydroxy-6,14-cis-8,10-trans-eicosatetraenoic acid (LTB4), a reaction catalyzed by LTA4 hydrolase. Alternatively, LTA4 may be conjugated with glutathione, by LTC4 synthase, to produce 5(S)-hydroxy-6(R)-S-glutathionyl-7,9-trans-11,14-cis-eicosatetraenoic acid (LTC4). This review will focus on the biochemistry and molecular biology of LTA4 hydrolase, the enzyme catalyzing the final step in the biosynthesis of the potent chemotaxin LTB4, an important mediator of inflammation.
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Haeggström, J.Z., Wetterholm, A. (1999). Leukotriene A4 hydrolase: A key enzyme in chemotactic leukotriene formation. In: Folco, G., Samuelsson, B., Murphy, R.C. (eds) Novel Inhibitors of Leukotrienes. Progress in Inflammation Research. Birkhäuser, Basel. https://doi.org/10.1007/978-3-0348-8703-8_3
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DOI: https://doi.org/10.1007/978-3-0348-8703-8_3
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