Which of the following is a larger propeptide that is broken down into smaller active opioids?
A) PZM21
B) Propoxyphene
C) Pro-opiomelanocortin (POMC)
D) Pro-endomorphin

Question

Quizplus · Accepted Answer

Pro-opiomelanocortin (POMC) is a larger propeptide that is broken down into smaller active opioids including beta-endorphin, which binds to mu-opioid receptors and produces analgesia. The other choices, PZM21 and Propoxyphene, are not opioids or propeptides for opioids. Pro-endomorphin is a peptide precursor, but it is smaller and not as well known as POMC.

Which of the Following Is a Larger Propeptide That Is