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Receptors
Macromolecules that bind a signal molecule with high specificity to trigger intracellular events.
Cell-surface or intracellular proteins that detect ligands (hormones, neurotransmitters, nutrients) and initiate signaling cascades or gene-expression changes.
How one textbook covers it
Advanced Nutrition and Human Metabolism, 8th ed. (Gropper) — Glossary
Cell-surface or intracellular proteins that detect ligands (hormones, neurotransmitters, nutrients) and initiate signaling cascades or gene-expression changes.
Related terms
Heterodimers, Ligands, Signal transduction