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A Brief Guide to Enzyme Classification and Nomenclature

What are the nomenclature and classification of enzymes?
According to the International Union of Biochemists (I U B), enzymes are divided into six functional classes and are classified based on the type of reaction in which they are used to catalyze.
The six kinds of enzymes are hydrolases, oxidoreductases, lyases, transferases, ligases and isomerases.
What are the 7 classes of enzymes?
Enzymes are actually classified into seven classes, namely oxidoreductases, transferases, hydrolases, lyases, isomerases, ligases, and translocases.
What are the rules in naming and classifying enzymes?
The second general principle is that enzymes are principally classified and named according to the reaction they catalyse.
The chemical reaction catalysed is the specific property that distinguishes one enzyme from another, and it is logical to use it as the basis for the classification and naming of enzymes.
Conventions of Naming – EC Numbers
EC 1.
Oxidoreductases.EC 2.
Transferases.EC 3.
Hydrolases.EC 4.
Lyases.EC 5.
Isomerases.EC 6.
Ligases.

Each enzyme is allocated a four-digit EC number, the first three digits of which define the reaction catalysed and the fourth of which is a unique identifier (serial number). Each enzyme is also assigned a systematic name that uniquely defines the reaction catalysed.

A Brief Guide to Enzyme Classification and Nomenclature

What are the nomenclature and classification of enzymes?

What are the 7 classes of enzymes?

What are the rules in naming and classifying enzymes?

Conventions of Naming – EC Numbers