Receptor proteins

Receptor proteins are specialized molecules located on the surface or inside cells that detect and respond to specific signals, such as hormones, neurotransmitters, or other molecules. When a signal binds to a receptor, it triggers a change inside the cell, activating certain processes. Think of receptor proteins as lock-and-key systems—they recognize and bind to specific substances, allowing the cell to respond appropriately. This communication is essential for functions like growth, immune response, and maintaining balance within the body.