Question

Classify the enzymes based on the types of reactions they catalyse.

Answer 1

The enzymes are classified into 6 different classes based on the types of reactions they catalyse:

• Oxidoreductase/ dehydrogenase: Enzymes which catalyse oxidoreduction between two substrates.
• Transferases: Enzymes catalysing a transfer of a group between a pair of substrates.
• Hydrolases: Enzymes catalysing hydrolysis of ester, ether, peptide and halides.
• Lyases: Enzymes that catalyse removal of groups from substrates by mechanisms other than hydrolysis leaving double bonds.
• Isomerases: Include all enzymes catalysing inter conversion of optical, geometric or positional isomers.
• Ligases: Enzymes catalysing the linking together of 2 compounds.