IUBMB Enzyme Nomenclature


Accepted name: leukotriene-B4 20-monooxygenase

Reaction: (6Z,8E,10E,14Z)-(5S,12R)-5,12-dihydroxyicosa-6,8,10,14-tetraenoate + NADPH + H+ + O2 = (6Z,8E,10E,14Z)-(5S,12R)-5,12,20-trihydroxyicosa-6,8,10,14-tetraenoate + NADP+ + H2O

Other name(s): leukotriene-B4 20-hydroxylase; leucotriene-B4 ω-hydroxylase; LTB4 20-hydroxylase; LTB4 ω-hydroxylase

Systematic name: (6Z,8E,10E,14Z)-(5S,12R)-5,12-dihydroxyicosa-6,8,10,14-tetraenoate,NADPH:oxygen oxidoreductase (20-hydroxylating)

Comments: A heme-thiolate protein (P-450). Not identical with, leukotriene-E4 20-monooxygenase.

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number: 90119-11-2


1. Romano, M.C., Eckardt, R.D., Bender, P.E., Leonard, T.B., Straub, K.M. and Newton, J.F. Biochemical characterization of hepatic microsomal leukotriene B4 hydroxylases. J. Biol. Chem. 262 (1987) 1590-1595. [PMID: 3027095]

2. Shak, S. and Goldstein, I.M. Leukotriene B4 ω-hydroxylase in human polymorphonuclear leukocytes. Partial purification and identification as a cytochrome P-450. J. Clin. Invest. 76 (1985) 1218-1228. [PMID: 4044832]

3. Soberman, R.J., Harper, T.W., Murphy, R.C. and Austen, K.F. Identification and functional characterization of leukotriene B4 20-hydroxylase of human polymorphonuclear leukocytes. Proc. Natl. Acad. Sci. USA 82 (1985) 2292-2295. [PMID: 2986111]

[EC created 1989]

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