ser-4 encodes an ortholog of mammalian 5-HT1 metabotropic serotoninreceptors; SER-4 is required for normal inhibition of movement by 5-HT,with ser-4 mutants being hyperactive; SER-4 is partly required for maletail curling, with ser-4 mutants showing reduced curling in exogenous5-HT; SER-4 is dispensable for the stimulation of egg-laying by 5-HT andby the uptake inhibitor fluoxetine; SER-4 may actually inhibitegg-laying, since egg-laying ser-4 mutants are moderately hypersensitiveto 5-HT, and mutant ser-4 hermaphrodites are partly depleted of eggs,suggesting that their egg-laying is weakly constitutive; however, SER-4is required for stimulation of egg-laying by the tricyclicantidepressant imipramine, suggesting that imipramine drives HSNs tosecrete some non-5-HT neurotransmitter which then activates SER-4; SER-4is expressed in neurons (RIB and RIS, other head, pharyngeal,sublateral, retrovesicular ganglion, PVT, and either DVA or DVC); SER-4has a low affinity for serotonin (5-HT), and overall pharmacologicalsimilarities to mammalian 5-HT1 receptors; SER-4 is probably antagonizedby mianserin; heterologously expressed SER-4, when challenged with 5-HT,diminishes intracellular adenylate cyclase activity; LIM-6 is requiredfor normal expression of SER-4 in RIS interneurons.
Enables G protein-coupled serotonin receptor activity. Involved in regulation of locomotion and serotonin receptor signaling pathway. Predicted to be located in dendrite. Expressed in neurons; vm2; and vulval cell. Human ortholog(s) of this gene implicated in several diseases, including Alzheimer's disease; attention deficit hyperactivity disorder; conduct disorder; and panic disorder. Is an ortholog of human HTR1A (5-hydroxytryptamine receptor 1A).
Map position created from combination of previous interpolated map position (based on known location of sequence) and allele information. Therefore this is not a genetic map position based on recombination frequencies or genetic experiments. This was done on advice of the CGC.