Description_x000D_ General description_x000D_ The tryptophan hydroxylase 1 (TPH1) gene spanning 29kbp with 11 exons is mapped to human chromosome 11p15.3-p14. TPH1, is a 444 amino acid protein expressed in the gut, spleen, thymus and also in the pineal gland and the pituitary._x000D_ Immunogen_x000D_ recombinant rabbit tryptophan hydroxylase, isolated as inclusion bodies from E. coli and purified by preparative SDS-PAGE._x000D_ Physical form_x000D_ Solution in 150 mM NaCl, 10 mM HEPES, pH 7.5, 100 μg per mL BSA, and 50% glycerol._x000D_ Disclaimer_x000D_ Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals._x000D_ Biochem/physiol Actions_x000D_ The tryptophan hydroxylase 1 gene (TPH1) catalyzes the synthesis of 5-hydroxytryptophan, which is a precursor to the neurotransmitter serotonin. Variation in the gene expression affects prefrontal cortex activation during response inhibition. Mutation in the TPH1 gene leads to schizophrenia, irritable bowel syndrome (IBS) in women, suicidal behavior and depressive disorders. The encoded protein plays a vital role in regulation of cardiovascular function.