Histidyl-proline diketopiperazine is a cyclic dipeptide otherwise known as cyclo (HisPro) or CHP. CHP is a cyclic structure formed from the amino acids histidine and proline, and is a major metabolite of thyrotropinreleasing hormone (TRH). In addition to being a metabolite of TRH, it appears that CHP may be derived […]
CHP
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