What Are Enzymes? Structure of Enzyme  Enzymes Classification Advertisements Historically, enzymes were given names based on their discoverer. With additional study, classification grew more exhaustive. The International Union of Biochemists (IUB) classifies enzymes into six functional classes based on the sort of reaction they catalyse. Hydrolases, oxidoreductases, lyases, transferases, ligases, and isomerases are the six … Read more