Pro-opiomelanocortin preproprotein, also known as POMC, a polypeptide hormone precursor that undergoes extensive, tissue-specific, post-translational processing via cleavage by subtilisin-like enzymes known as prohormone convertases. It regulates the corticosteroid production in the adrenal cortex. Also, POMC is cleaved into ten hormone chains named NPP, γ-MSH, ACTH, α-MSH, CLIP, Lipotropin β, Lipotropin γ, β-MSH, β endorphin and Met-enkephalin.