acetylenecarboxylate hydratase EC#: 4.2.1.27; ChemWhat Code: 1382277

Product Name acetylenecarboxylate hydratase
Example Structure Example Structure of acetylenecarboxylate hydratase EC#: 4.2.1.27
Synonyms acetylenemonocarboxylic acid hydrase, dehydratase, malonate semialdehyde, EC 4.2.1.71, malonate semialdehyde dehydratase, malonate semialdehyde dehydratase, malonate semialdehyde, malonate-semialdehyde dehydratase
EC Number 4.2.1.27
CAS Registry Number 9024-26-4
Comments The reaction is effectively irreversible, favouring oxopropanoate (malonic semialdehyde) and its tautomers. Also acts on 3-butynoate forming acetoacetate. The mechanism appears to involve hydration of the acetylene to 3-hydroxypropenoate, which will spontaneously tautomerize to 3-oxopropanoate. It is thus analogous to EC?4.1.1.78, acetylenedicarboxylate decarboxylase, in its mechanism.
Cofactor
History
Reactions 3-oxopropanoate = propynoate + H(2)O.

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