Transformation of LTA4 to LTB4

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Reaction

R15 LTA4 - LTB4.jpg

Chemical equation

 AA \rightleftharpoons PGH2

Rate equation

Parameters

Michaelis-Menten Constants
Value Units Species Notes Reference
5.80E-03 mM Human Wild Type, pH 8.0, at room temperature. [1]
2.70E-03 mM Human Leukocytes, pH 8.0 at room temperature. [2]
2.20E-02 mM Human 2°C, pH 8.0 [3]
2.30E-03 37°C, pH 8.0
Enzyme Turnover Numbers
Value Units Species Notes Reference
12.6 - 28.2 per minute Human Wild type enzyme, pH 7.4, 37 °C. [4]
51 per minute Human Wild Type, pH 8.0, at room temperature. [1]
90 per minute Human Leukocytes, pH 8.0 at room temperature. [2]
125 per minute Human Leukcyte pH 8.0, 37 °C [3]

Related Reactions

  1. 1.0 1.1 [www.ncbi.nlm.nih.gov/pubmed/8650196 Mueller M. , "Leukotriene A4 hydrolase: protection from mechanism-based inactivation by mutation of tyrosine-378. Proc Natl Acad Sci U S A. 1996 Jun 11;93(12):5931-5.]
  2. 2.0 2.1 [www.ncbi.nlm.nih.gov/pubmed/9744798 Stromberg F. , "Purification and characterization of leukotriene A4 hydrolase from Xenopus laevis oocytes. FEBS Lett. 1998 Aug 21;433(3):219-22.]
  3. 3.0 3.1 [www.ncbi.nlm.nih.gov/pubmed/6490615 Radmark O. , "Leukotriene A4 hydrolase in human leukocytes. Purification and properties J Biol Chem. 1984 Oct 25;259(20):12339-45.]
  4. [www.ncbi.nlm.nih.gov/pubmed/11675384 Rudberg P. , "Leukotriene A4 Hydrolase/Aminopeptidase The Journal of Biological Chemistry, 277, 1398-1404.]