An intracellular opiate receptor.
D000313:Adrenal Medulla / Q000378:metabolism*; D000818:Animals; D002395:Catecholamines / Q000378:metabolism*; D002837:Chromaffin Granules / Q000378:metabolism*; D002838:Chromaffin System / Q000378:metabolism*; D003917:Dextrorphan / Q000494:pharmacology; D005260:Female; D008691:Methadone / Q000494:pharmacology; D009270:Naloxone / Q000494:pharmacology; D051381:Rats; D011957:Receptors, Opioid / Q000378:metabolism*
D002395:Catecholamines; D011957:Receptors, Opioid; D003917:Dextrorphan; D009270:Naloxone; D008691:Methadone