<unk>  or β-Endorphin is an<unk> ogenous opioid neuropeptide and peptide hormone that is produced in certain neurons within the central nervous system and peripheral nervous system. It is one of three<unk> orphins that are produced in humans, the others of which include α-endorphin and γ-endorphin. The amino acid sequence is: Tyr-Gly-Gly-Phe-Met-Thr-Ser-Glu-Lys-Ser-Gln-Thr-Pro-Leu-Val-Thr-Leu-Phe-Lys-Asn-Ala-Ile-Ile-Lys-Asn-Ala-Tyr-Lys-Lys-Gly-Glu (31 amino acids). The first 16 amino acids are identical to α-endorphin. β-Endorphin is considered to be a part of the<unk> ogenous opioid and<unk> orphin classes of neuropeptides; all of the established<unk> ogenous opioid peptides contain the same N-terminal amino acid sequence, Tyr-Gly-Gly-Phe, followed by either or . Function of β-endorphin has been known to be associated with hunger, thrill, pain, maternal care, sexual behavior, and reward cognition. In the broadest sense, β-endorphin is primarily utilized in the body to reduce stress and maintain homeostasis. In behavioral research, studies have shown that β-endorphin is released via volume transmission into the ventricular system in response to a variety of stimuli, and novel stimuli in particular.
Beta-Endorphin
Somatostatin
Gluten exorphin
Dynorphin
N-Acetylserotonin
Neuropil
Histrelin
Delta-sleep-inducing peptide