The tripeptide Tyr-Gly-Gly (YGG) was established as an endogenous constituent in rat brain. Its origin from enkephalin neurons is suggested by its regional distribution paralleling that of (Met5)-enkephalin (YGGFM), its decrease following kainate-induced ablation of the striato-pallidal neurons and its enhanced formation following depolarization of pallidal slices. Enkephalinase (EC 220.127.116.11) is selectively responsible for endogenous YGG formation in vitro and in vivo.
Title and Abstract from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
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Last MEDLINE®/PubMed® update: 1st of December 2015