FEATURES

FAMILY

DESCRIPTION

Also known as OPRD_HUMAN, OPRD1, OPRD. G-protein coupled receptor that functions as receptor for endogenous enkephalins and for a subset of other opioids. Ligand binding causes a conformation change that triggers signaling via guanine nucleotide-binding proteins (G proteins) and modulates the activity of down-stream effectors, such as adenylate cyclase. Signaling leads to the inhibition of adenylate cyclase activity. Inhibits neurotransmitter release by reducing calcium ion currents and increasing potassium ion conductance. Plays a role in the perception of pain and in opiate-mediated analgesia. Plays a role in developing analgesic tolerance to morphine. May form homooligomers. Forms a heterodimer with OPRM1 (By similarity). Interacts with GPRASP1 (PubMed:12142540, PubMed:15086532). Interacts with RTP4; the interaction promotes cell surface localization of the OPRD1-OPRM1 heterodimer (By similarity).

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EXTERNAL LINKS

OPRD1

Delta-type opioid receptor

ligandability Mutations

OPRD1

Molecular Synopsis