OntologiesccoclassesGO:0004985   
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opioid receptor activityImported
http://purl.obolibrary.org/obo/GO_0004985

Combining with an opioid (any narcotic derived from or resembling opium), and transmitting the signal across the membrane by activating an associated G-protein.

Defined bygo
Also appears inchirogexoretorexooba