1. Enzym OXH - K

- Dehydrogenase: Lactat dehydrogenase

- Oxydase: Cytocrom oxydase, Xanthin oxydase,...

- Reductase: Beta-cetoacyl-ACP reductase...

- Catalase

- Oxygenase: Cytocrom P-450

- Peroxidase

2. Enzym vận chuyển nhóm (transferase)

- Aminotranferase: Aspartat transferase, alanin tranferase...

- Transetolase và transldolase...

- Acyl-, metyl-, glycosyl- tranferase, phosphorylase: AcylCoA-cholesterol acyl transferase (ACAT), glycogen phosphorylase...

- Kinase: Hexokinase, nucesidase phospho kinase...

- Thiolase: Acyl-CoA cetyltransferase...

- Polymerase: DNA polymerase, RNA polymerase...

3. Enzym thủy phân

- Esterase: Triacylglycerol lipase

- Glucosidase

- Protease

- Phosphatase

- Phospholipase

- Amidase: Nucleosidase

- Deamidase: Adenosin deaminose, guanin deaminose..

- Nuclease

4. Enzym phân cắt (lyase)

- Decarbolxylase: Pyruvat decarbolxylase, glutamate decarbolxydase...

- Aldolase: Beta-hydroxyacyl-ACP dehydratase...

- Synthase: ATP synthase, citrat synthase, glycogen synthase...

5. Enzym đồng phân (isomerase)

- Racemase

- Epimerase: Ribose-5-phosphat epimerase

- Isomerase: Phosphopentose isomerase 

- Mutase

6. Enzzym tổng hợp

- Synthetase

- Carboxylase: Pyruvat carboxyase..

- Ligase: DNA ligase...