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Definition of Receptor site

Receptor site Definition from Science & Technology Dictionaries & Glossaries
General Chemistry Glossary
A molecule or surface in a cell that recognizes and binds to a specific messenger molecule, leading to a biological response.
Receptor site Definition from Encyclopedia Dictionaries & Glossaries
Wikipedia English - The Free Encyclopedia
In biochemistry and pharmacology, a receptor is a protein molecule usually found inside or on the surface of a cell, that receives chemical signals from outside the cell. When such chemical signals bind to a receptor, they cause some form of cellular/tissue response, e.g. change in the electrical activity of the cell. In this sense, a receptor is a protein molecule that recognises and responds to endogenous chemical signals, e.g. the acetylcholine receptor recognised and responds to its endogenous ligand, acetylcholine. However sometimes in pharmacology, the term is also used to include other proteins that are drug targets, such as enzymes, transporters and ion channels.

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Receptor site Definition from Medicine Dictionaries & Glossaries
Hepatitis Central (TM) Liver Disease Medical Glossary
Structure of protein on the outside of the cell membrane - receptor sites allow cells to identify each other and serve as attachment points for biological substances that produce a alterations in cell function. Viruses use receptor sites to identify a host cell and attach to it