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Β-endorphin

β-Endorphin
Beta-endorphin.png
Names
IUPAC name
L-Tyrosylglycylglycyl-L-phenylalanyl-L-methionyl-L-threonyl-L-seryl-L-glutaminyl-L-lysyl-L-seryl-L-glutaminyl-L-threonyl-L-prolyl-L-leucyl-L-valyl-L-threonyl-L-leucyl-L-phenylalanyl-L-lysyl-L-asparaginyl-L-alanyl-L-isoleucyl-L-isoleucyl-L-lysyl-L-asparaginyl-L-alanyl-L-tyrosyl-L-lysyl-L-lysylglycyl-L-glutamine
Identifiers
3D model (Jmol)
ChEBI
ChemSpider
ECHA InfoCard 100.056.646
PubChem CID
Properties
C158H251N39O46S
Molar mass 3,465.03 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
YesY  (what is YesYN ?)
Infobox references

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.

β-Endorphin is a peptide, 31 amino acids long, resulting from processing of the precursor proopiomelanocortin (POMC). (Note, POMC also gives rise to other peptide hormones, including adrenocorticotropic hormone (ACTH), as well α- and γ-melanocyte-stimulating hormone (MSH), resulting from intracellular processing by internal enzymes known as prohormone convertases.)


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