In chemistry, a hydration reaction is a chemical reaction in which a substance combines with water. In organic chemistry, water is added to an unsaturated...

Aconitase (aconitate hydratase; EC 4.2.1.3) is an enzyme that catalyses the stereo-specific isomerization of citrate to isocitrate via cis-aconitate in...

Fumarase (or fumarate hydratase) is an enzyme (EC 4.2.1.2) that catalyzes the reversible hydration/dehydration of fumarate to malate. Fumarase comes in...

The enzyme kievitone hydratase (EC 4.2.1.95) catalyzes the chemical reaction kievitone hydrate ⇌ {\displaystyle \rightleftharpoons } kievitone + H2O This...

fumarate hydratase EC 4.2.1.3: aconitate hydratase EC 4.2.1.4: Now known to be a partial reaction catalysed by EC 4.2.1.3, aconitate hydratase EC 4.2.1...

Nitrile hydratases (NHases; EC 4.2.1.84) are mononuclear iron or non-corrinoid cobalt enzymes that catalyse the hydration of diverse nitriles to their...

Enoyl-CoA hydratase (ECH) or crotonase is an enzyme EC 4.2.1.17 that hydrates the double bond between the second and third carbons on 2-trans/cis-enoyl-CoA:...

Acetylene hydratase (EC 4.2.1.112, AH) is a bacterial enzyme, originally discovered in the anaerobic microorganism Pelobactor acetylenicus, that catalyzes...

Phosphopyruvate hydratase, usually known as enolase, is a metalloenzyme (EC 4.2.1.11) that catalyses the conversion of 2-phosphoglycerate (2-PG) to phosphoenolpyruvate...

Carotenoid 1,2-hydratase (EC 4.2.1.131, CrtC) is an enzyme with systematic name lycopene hydro-lyase (1-hydroxy-1,2-dihydrolycopene-forming). This enzyme...