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3.3.2.10: soluble epoxide hydrolase

This is an abbreviated version!
For detailed information about soluble epoxide hydrolase, go to the full flat file.

Word Map on EC 3.3.2.10

Reaction

an epoxide
+
H2O
=
a glycol

Synonyms

AnEH, BNSEH1, CEH, Cterm-EH, Cytosolic epoxide hydrolase, EC 3.1.3.76, EC 3.3.2.3, EC 4.2.1.63, EC 4.2.1.64, EET-metabolizing enzyme, EH, EH3, EPHX2, EPHX3, epoxide hydrolase 1, epoxide hydrolase 2, epoxide hydrolase-3, epoxyeicosatrienonic acid-metabolizing enzyme, EPXH1, EPXH2, EPXH2B, hepoxilin hydrolase, hsEH, mEH, More, PNSO hydrolase, PsEH, s-EH, SEH, soluble epoxide hydrolase, soluble-type epoxide hydrolase, SPEH1, SPEH2, TESO hydrolase, TSO hydrolase

ECTree

     3 Hydrolases
         3.3 Acting on ether bonds
             3.3.2 Ether hydrolases
                3.3.2.10 soluble epoxide hydrolase

Systematic Name

Systematic Name on EC 3.3.2.10 - soluble epoxide hydrolase

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SYSTEMATIC NAME
IUBMB Comments
epoxide hydrolase
Catalyses the hydrolysis of trans-substituted epoxides, such as trans-stilbene oxide, as well as various aliphatic epoxides derived from fatty-acid metabolism [7]. It is involved in the metabolism of arachidonic epoxides (epoxyicosatrienoic acids; EETs) and linoleic acid epoxides. The EETs, which are endogenous chemical mediators, act at the vascular, renal and cardiac levels to regulate blood pressure [4,5]. The enzyme from mammals is a bifunctional enzyme: the C-terminal domain exhibits epoxide-hydrolase activity and the N-terminal domain has the activity of EC 3.1.3.76, lipid-phosphate phosphatase [1,2]. Like EC 3.3.2.9, microsomal epoxide hydrolase, it is probable that the reaction involves the formation of an hydroxyalkyl---enzyme intermediate [4,6]. The enzyme can also use leukotriene A4, the substrate of EC 3.3.2.6, leukotriene-A4 hydrolase, but it forms 5,6-dihydroxy-7,9,11,14-icosatetraenoic acid rather than leukotriene B4 as the product [9,10]. In vertebrates, five epoxide-hydrolase enzymes have been identified to date: EC 3.3.2.6 (leukotriene-A4 hydrolase), EC 3.3.2.7 (hepoxilin-epoxide hydrolase), EC 3.3.2.9 (microsomal epoxide hydrolase), EC 3.3.2.10 (soluble epoxide hydrolase) and EC 3.3.2.11 (cholesterol 5,6-oxide hydrolase) [7].