Multiple opiate receptors. Enkephalins and morphine bind to receptors of different specificity.
D000818:Animals; D001667:Binding, Competitive; D001921:Brain / Q000378:metabolism*; D002462:Cell Membrane / Q000378:metabolism; D004723:Endorphins / Q000378:metabolism*; D004745:Enkephalins / Q000378:metabolism*; D007700:Kinetics; D009020:Morphine / Q000378:metabolism*; D051381:Rats; D011957:Receptors, Opioid / Q000378:metabolism*; D013379:Substrate Specificity
D004723:Endorphins; D004745:Enkephalins; D011957:Receptors, Opioid; D009020:Morphine