| Modification Notes |
TRH (thyrotrophin-releasing hormone), also known as TRF, Prothyroliberin or Thyroliberin, is a 242 amino acid secreted protein that belongs to the TRH family and is expressed in the hypothalamus in response to hypothyroidism. TRH is a hypothalamic tripeptide that stimulates the release of thyrotrophin (TSH) and prolactin through its receptor in the anterior pituitary gland. In addition to regulating the biosynthesis of TSH, TRH acts as a neurotransmitter and a neuromodulator in the central and peripheral nervous systems. An integral membrane ectopeptidase protein, PGP-II (pyroglutamyl peptidase II), cleaves and inactivates TRH in neural and hormonal transmissions. TRH may function as a melanoma autocrine growth factor in melanomas and dysplastic nevi. |