Receptor Definition

A receptor is a specialized protein molecule found on the surface of or within cells that serves as a binding site for specific substances, such as hormones, neurotransmitters, or drugs. When these substances, known as ligands, bind to the receptor, they trigger a series of biochemical events within the cell, leading to a physiological response. Receptors play a critical role in cellular communication, allowing cells to respond to changes in their environment. They are integral to various bodily functions, including the regulation of metabolism, immune responses, and sensory perception. Understanding the structure and function of receptors is essential in the development of targeted therapies for numerous medical conditions, as they provide precise intervention points for drugs to modulate specific biological pathways.

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