title: The proenkephalin A fragment peptide E is metabolized centrally to a novel peptide with opioid activity.
mesh_terms: D000818:Animals; D001921:Brain / Q000378:metabolism*; D004745:Enkephalins / Q000378:metabolism*; D006168:Guinea Pigs; D066298:In Vitro Techniques; D008297:Male; D051379:Mice; D009119:Muscle Contraction / Q000187:drug effects; D009130:Muscle, Smooth / Q000187:drug effects; D009294:Narcotics / Q000378:metabolism*; D010446:Peptide Fragments / Q000378:metabolism*; D011498:Protein Precursors / Q000378:metabolism*
chemical_list: D004745:Enkephalins; D009294:Narcotics; D010446:Peptide Fragments; D011498:Protein Precursors; C029992:proenkephalin