Recent History of Drug Discovery: Enzymes/Receptors as Drug Targets
Developments in biochemistry also facilitated drug discovery, since many enzymes and receptor molecules discovered through the tools of biochemistry and cell biology later proved to be good drug targets. It ahs been shown that out of more than 500 molecular drug targets that are known, 45% are receptors and 28% are enzymes. The discovery and subsequent use of receptors and enzymes as drug targets will be discussed separately for receptors and enzymes
Relative Proportion of the Different Classes of Molecular Targets of Drug Therapy
| 1. | Receptors (45%) | 2. | Enzymes (28%)` |
| 3. | Hormones and growth factors (11%) | 4. | DNA (2%) |
| 5. | Nuclear receptors (2%) | 6. | Ion channels (5%) |
| 7. | Unknown (7%) |


