Receptors, Enzymes

The term "Receptors, Enzymes" represents a broad classification of biological macromolecules that serve as the primary sites of action for the vast majority of pharmaceutical interventions. Receptors are specialized proteins, often located on the cell surface, that recognize and bind specific ligands to trigger intracellular signaling pathways, such as G protein-coupled receptors (StatPearls, 2023). Enzymes are catalytic proteins that facilitate essential biochemical reactions, such as the phosphorylation of proteins by kinases or the breakdown of substrates by proteases (NIH, 2022). While these categories are fundamental to pharmacology, the term itself is a high-level grouping rather than a specific therapeutic target. Drug discovery efforts are directed at specific individual members within these groups to modulate physiological processes and treat conditions such as cancer, autoimmune disorders, and infectious diseases. Consequently, this entry is considered incorrect as a single target because it encompasses thousands of distinct proteins with diverse functions.

Other names

Biological targetsDrug targetsProteins

Drugs targeting receptors typically act as agonists, antagonists, or inverse agonists, while those targeting enzymes act as inhibitors or activators (PubChem, 2023).