metabotropic receptor: meaning, definition, pronunciation and examples

Metabotropic receptors act indirectly via intracellular signaling cascades (often G-proteins), resulting in slower, longer-lasting effects. Ionotropic receptors are ligand-gated ion channels that directly open upon neurotransmitter binding, producing rapid, short-lived electrical signals.

In the broadest sense, yes. In neuroscience and pharmacology, 'metabotropic receptor' specifically refers to GPCRs for neurotransmitters (e.g., glutamate, GABA, dopamine). The term highlights their role in modulating synaptic function, whereas 'GPCR' is a broader structural term used across all biology.

They are key targets because their modulatory actions influence long-term neural processes like mood, memory, and motivation. Drugs acting on them (e.g., antipsychotics, some antidepressants) can fine-tune brain activity rather than just blocking or exciting it, offering potential for more nuanced treatments.

Yes. Glutamate is a prime example: it activates fast AMPA and NMDA (ionotropic) receptors and slower mGluR (metabotropic) receptors. This allows for precise temporal control over synaptic communication, combining immediate excitation with longer-term modulation.

A type of cell membrane receptor that initiates intracellular biochemical signaling cascades (typically via G-proteins) in response to neurotransmitter binding, leading to slower, longer-lasting cellular changes.

Metabotropic receptor is usually academic, scientific, medical, technical (neuroscience, pharmacology, biochemistry) in register.

Metabotropic receptor: in British English it is pronounced /ˌmɛtəbə(ʊ)ˈtrɒpɪk rɪˈsɛptə/, and in American English it is pronounced /ˌmɛtəboʊˈtroʊpɪk rəˈsɛptər/. Tap the audio buttons above to hear it.