cell receptor(redirected from Receptor (biochemistry))
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a protein located either on a cell's surface, in its cytoplasm, or in its nucleus that binds to a specific ligand (typically an ion or a molecule), initiating signal transduction and a change in cellular activity.
Any of the cell membrane proteins or intracellular proteins that react with chemicals, e.g., hormones, circulating in the cell's environment. The reaction triggers the cell's characteristic response to the hormone or other chemical.See: drug receptor
See also: receptor