Galactonate dehydratase

This enzyme belongs to the family of lyases, specifically the hydro-lyases, which cleave carbon-oxygen bonds. The systematic name of this enzyme class is D-galactonate hydro-lyase (2-dehydro-3-deoxy-D-galactonate-forming). Other names in common use include D-galactonate dehydrase, D-galactonate dehydratase, and D-galactonate hydro-lyase. This enzyme participates in galactose metabolism.

References

DE LEY J, DOUDOROFF M (1957). "The metabolism of D-galactose in Pseudomonas saccharophila". J. Biol. Chem. 227 (2): 745–57. PMID 13462997.

Carbon-oxygen lyases (EC 4.2) (primarily dehydratases)

4.2.1: Hydro-Lyases	Carbonic anhydrase Fumarase Aconitase Enolase Alpha Enolase 2 Enoyl-CoA hydratase/3-Hydroxyacyl ACP dehydrase Methylglutaconyl-CoA hydratase Tryptophan synthase Cystathionine beta synthase Porphobilinogen synthase 3-Isopropylmalate dehydratase Urocanase Uroporphyrinogen III synthase Nitrile hydratase

4.2.2: Acting on polysaccharides	Hyaluronate lyase

4.2.3: Acting on phosphates	Threonine synthase

4.2.99: Other	Carboxymethyloxysuccinate lyase

Enzymes

Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Catalytically perfect enzyme Coenzyme Cofactor Enzyme catalysis Enzyme kinetics Lineweaver–Burk plot Michaelis–Menten kinetics

Regulation	Allosteric regulation Cooperativity Enzyme inhibitor

Classification	EC number Enzyme superfamily Enzyme family List of enzymes

Types	EC1 Oxidoreductases(list) EC2 Transferases(list) EC3 Hydrolases(list) EC4 Lyases(list) EC5 Isomerases(list) EC6 Ligases(list)

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