Leu-enkephalin

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Leu-enkephalin
IUPAC name (2R)-2-[[(2R)-2-[[2-[[2-[[(2R)-2-amino-3-
(4-hydroxyphenyl)propanoyl]amino]acetyl]
amino]acetyl]amino]-3-phenylpropanoyl]
amino]-4-methylpentanoic acid
Identifiers
CAS number [58822-25-6]
PubChem 10415290
SMILES CC(C)C[C@H](C(=O)O)NC(=O)[C@@H](CC1=CC=CC=C1)
NC(=O)CNC(=O)CNC(=O)[C@@H](CC2=CC=C(C=C2)O)N
Properties
Molecular formula C28H37N5O7
Molar mass 555.62268 g/mol
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references

Leu-enkephalin is an endogenous opioid peptide neurotransmitter found naturally in the brains of many animals, including humans. It is one of the two forms of enkephalin; the other is met-enkephalin. The tyrosine residue at position 1 is thought to be analogous to the 3-hydroxyl group on morphine.