enkephalins(redirected from leuenkephalin)
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Pentapeptide endorphins, found in many parts of the brain, that bind to specific receptor sites, some of which may be pain-related opiate receptors; hypothesized as endogenous neurotransmitters and nonaddicting analgesics. Metenkephalin is Tyr-Gly-Gly-Phe-Met; leuenkephalin has Leu in place of Met; proenkephalin has Pro in place of Met.
n.pl either of the two pentapeptides produced in the body that bind neuroreceptors in brain to alleviate pain.
Pentapeptide endorphins, found in many parts of the brain.