What Is a Beta-Endorphin?

-endorphin is a kind of endogenous morphine-like substance in the human body. It forms an opioid peptide family together with enkephalin and dynorphin. In 1976, a substance with strong morphine-like activity was discovered by Li Zhuohao and others isolated from the pituitary of camel. Found in 1977 from the human pituitary tissue. -endorphin is a polypeptide consisting of 31 amino acids with a relative molecular mass of 3400. The chemical composition of -endorphins in different species is basically similar. ^[1]