| Function | G-protein coupled receptor for 5-hydroxytryptamine (serotonin). Also functions as a receptor for various drugs and psychoactive substances. Ligand binding causes a conformation change that triggers signaling via guanine nucleotide-binding proteins (G proteins) and modulates the activity of downstream effectors, such as adenylate cyclase. HTR1A is coupled to G(i)/G(o) G alpha proteins and mediates inhibitory neurotransmission: signaling inhibits adenylate cyclase activity and activates a phosphatidylinositol-calcium second messenger system that regulates the release of Ca(2+) ions from intracellular stores. Beta-arrestin family members regulate signaling by mediating both receptor desensitization and resensitization processes. Plays a role in the regulation of 5-hydroxytryptamine release and in the regulation of dopamine and 5-hydroxytryptamine metabolism. Plays a role in the regulation of dopamine and 5-hydroxytryptamine levels in the brain, and thereby affects neural activity, mood and behavior. Plays a role in the response to anxiogenic stimuli. |
| Protein Name | 5-Hydroxytryptamine Receptor 1a5-Ht-1a5-Ht1aG-21Serotonin Receptor 1a |
| Database Links | Reactome: R-HSA-390666 |
| Cellular Localisation | Cell MembraneMulti-Pass Membrane ProteinCell ProjectionDendrite |
| Alternative Protein Names | 5-Hydroxytryptamine Receptor 1a protein5-Ht-1a protein5-Ht1a proteinG-21 proteinSerotonin Receptor 1a proteinHTR1A proteinADRB2RL1 proteinADRBRL1 protein |
Information sourced from Uniprot.org
