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...

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...

The enzyme acetylenecarboxylate hydratase (EC 4.2.1.27) catalyzes the chemical reaction 3-oxopropanoate ⇌ {\displaystyle \rightleftharpoons } propynoate...

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

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:...

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...

Enoyl-CoA hydratase 2 (2-enoyl-CoA hydratase 2, AtECH2, ECH2, MaoC, MFE-2, PhaJAc, D-3-hydroxyacyl-CoA hydro-lyase, D-specific 2-trans-enoyl-CoA hydratase) is...

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

The enzyme maleate hydratase (EC 4.2.1.31) catalyzes the chemical reaction (R)-malate ⇌ {\displaystyle \rightleftharpoons } maleate + H2O This enzyme...