title: Structural requirements for specific recognition of mu or delta opiate receptors.
mesh_terms: D000818:Animals; D001667:Binding, Competitive; D002490:Central Nervous System / Q000378:metabolism; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004743:Enkephalin, Leucine; D004744:Enkephalin, Methionine; D004745:Enkephalins / Q000378:metabolism / Q000494:pharmacology; D066298:In Vitro Techniques; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D051381:Rats; D011957:Receptors, Opioid / Q000378:metabolism*; D017465:Receptors, Opioid, delta; D017450:Receptors, Opioid, mu; D013329:Structure-Activity Relationship
chemical_list: D004745:Enkephalins; D011957:Receptors, Opioid; D017465:Receptors, Opioid, delta; D017450:Receptors, Opioid, mu; D004744:Enkephalin, Methionine; D004743:Enkephalin, Leucine