ID 3.3.2.9 DE microsomal epoxide hydrolase. AN arene-oxide hydratase. AN aryl epoxide hydrase. AN benzo[a]pyrene-4,5-oxide hydratase. AN cis-epoxide hydrolase. AN epoxide hydrase. AN epoxide hydratase. AN mEH. AN microsomal epoxide hydrase. AN microsomal epoxide hydratase. AN microsomal oxirane/oxetane hydrolase. CA (1) cis-stilbene oxide + H2O = (1R,2R)-hydrobenzoin. CA (2) 1-(4-methoxyphenyl)-N-methyl-N-[(3-methyloxetan-3- CA yl)methyl]methanamine + H2O = 2-{[(4-methoxybenzyl)(methyl)amino]methyl}- CA 2-methylpropane-1,3-diol. CC -!- This is a key hepatic enzyme that catalyzes the hydrolytic ring CC opening of oxiranes (epoxides) and oxetanes to give the corresponding CC diols. CC -!- The enzyme is involved in the metabolism of numerous substrates CC including the stereoselective hydrolytic ring opening of CC 7-oxabicyclo[4.1.0]hepta-2,4-dienes (arene oxides) to the CC corresponding trans-dihydrodiols. CC -!- The reaction proceeds via a triad mechanism and involves the CC formation of an hydroxyalkyl-enzyme intermediate. CC -!- Five epoxide-hydrolase enzymes have been identified in vertebrates to CC date: EC 3.3.2.6, EC 3.3.2.7, EC 3.3.2.9, EC 3.3.2.10 and CC EC 3.3.2.11. CC -!- Formerly EC 3.3.2.3, EC 4.2.1.63 and EC 4.2.1.64. DR Q8MZR6, HYEP1_CTEFE; Q8MZR5, HYEP2_CTEFE; Q6U6J0, HYEP_BOMMO ; DR P07099, HYEP_HUMAN ; Q25489, HYEP_MANSE ; Q9D379, HYEP_MOUSE ; DR P79381, HYEP_PIG ; P04068, HYEP_RABIT ; P07687, HYEP_RAT ; //