tph-1 encodes tryptophan hydroxylase, the enzyme that catalyzes the rate-limiting first step in serotonin biosynthesis; in vivo, tph-1 activity is required for serotonin biosynthesis, and well-fed animals mutant for tph-1 exhibit changes in behavioral and metabolic processes similar to those caused by starvation: slower rates of egg laying and pharyngeal pumping, dauer larval arrest, increased fat storage, and an extended reproductive lifespan; genetic studies indicate that, in regulating feeding and metabolism, tph-1 interacts with the daf-7/TGF-beta and daf-2/insulin-like signaling pathways; a TPH-1::GFP reporter is expressed in the serotonergic neurons: NSM, ADF, HSN (hermaphrodite-specific), CP (male-specific), and also rarely in the AIM and RIH neurons.
Predicted to enable tryptophan 5-monooxygenase activity. Involved in several processes, including determination of adult lifespan; locomotory exploration behavior; and positive regulation of transforming growth factor beta receptor signaling pathway. Located in cytosol and neuron projection. Expressed in CP neuron; nerve ring; and pharynx. Used to study alcohol use disorder and cocaine abuse. Human ortholog(s) of this gene implicated in several diseases, including Alzheimer's disease; alcohol use disorder; attention deficit hyperactivity disorder; and autistic disorder. Is an ortholog of human TPH1 (tryptophan hydroxylase 1) and TPH2 (tryptophan hydroxylase 2).
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.