Predicted to enable tryptophan 5-monooxygenase activity. Involved in several processes, including cellular response to lithium ion; response to activity; and response to estrogen. Predicted to be active in neuron projection. Human ortholog(s) of this gene implicated in attention deficit hyperactivity disorder; autistic disorder; major depressive disorder; and panic disorder. Orthologous to human TPH2 (tryptophan hydroxylase 2). [provided by Alliance of Genome Resources, Apr 2022]