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EC 1: Oxidoreductases
EC 2: Transferases
EC 3: Hydrolases
EC 4: Lyases
EC 5: Isomerases
EC 6: Ligases
Enzymes in industry
EC 4 Lyase, Nomenclature
Lyase definition and nomenclatureAccording to the NC-IUBMB (Nomenclature Committee of the International Union of Biochemistry and Molecular Biology) classification, EC 4 lyases are enzymes that catalyse Carbon-Carbon (C-C), Carbon-Oxygen (C-O), Carbon-Nitrogen (C-N) and other bond cleavage not via hydrolysis or oxidation. The nomenclature for systematic names is based on the standard scheme: substrate group-lyase. In common names an additional suffix -lase is used. If lyase remove water molecule, then the common name can be dehydratase. Because of all lyases can work as synthases, the classification is based on the most important direction of reaction and the name synthase can be used instead of lyase.
EC 4 number classification of LyasesThis classification is based on the chemical bond cleaved by enzymes.
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