An enzyme that catalyzes the conversion of 4,5-dihydro-4-oxo-5-imidazolepropanoate
to urocanate and water. EC 4.2.1.49.
http://www.orpha.net/consor/cgi-bin/OC_Exp.php?Lng=FR&Expert=210128 2011 France scientific and technical information brain diseases urocanate hydratase