Wikipedia
Beta-Endorphin
β-Endorphin is an endogenous opioid neuropeptide found in the neurons of both the central and peripheral nervous system. It is one of five endorphins found in humans, the others of which include α-endorphin, γ-endorphin, α-neoendorphin, and β-neoendorphin.
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.
Usage examples of "beta-endorphin".
High cortisol, no alpha or beta-endorphins, traces of carnosine, amiglycine, and theta-asparcine.