Structural requirements for specific recognition of mu or delta opiate receptors.

Animals Binding, Competitive Central Nervous System/metabolism Chemical Phenomena Chemistry, Physical Enkephalin, Leucine Enkephalin, Methionine Enkephalins/metabolism,pharmacology In Vitro Techniques Magnetic Resonance Spectroscopy Molecular Conformation Rats Receptors, Opioid/metabolism Receptors, Opioid, delta Receptors, Opioid, mu Structure-Activity Relationship

Enkephalins Receptors, Opioid Receptors, Opioid, delta Receptors, Opioid, mu Enkephalin, Methionine Enkephalin, Leucine