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Cell membrane proteins that bind opioids and trigger intracellular changes which influence the behavior of cells. The endogenous ligands for opioid receptors in mammals include three families of peptides, the enkephalins, endorphins, and dynorphins. The receptor classes include mu, delta, and kappa receptors. Sigma receptors bind several psychoactive substances, including certain opioids, but their endogenous ligands are not known.
Entry Version
RECEPT OPIOID
Entry Term(s)
Endorphin Receptor
Endorphin Receptors
Enkephalin Receptor
Enkephalin Receptors
Narcotic Receptors
Normorphine Receptors
Opiate Receptor
Opiate Receptors
Opioid Receptor
Opioid Receptors
Receptors, Endorphin
Receptors, Enkephalin
Receptors, Narcotic
Receptors, Normorphine
Receptors, Opiate
Receptors, beta-Endorphin
beta-Endorphin Receptor
Registry Numbers
0
Previous Indexing
Narcotics (1966-1976)
Receptors, Drug (1966-1976)
Public MeSH Note
94; was RECEPTORS, ENDORPHIN 1980-93; was RECEPTORS, NARCOTIC 1977-79
Online Note
use RECEPTORS, OPIOID to search RECEPTORS, ENDORPHIN 1980-93 & RECEPTORS, NARCOTIC 1977-79
History Note
94; was RECEPTORS, ENDORPHIN 1980-93; was RECEPTORS, NARCOTIC 1977-79
Cell membrane proteins that bind opioids and trigger intracellular changes which influence the behavior of cells. The endogenous ligands for opioid receptors in mammals include three families of peptides, the enkephalins, endorphins, and dynorphins. The receptor classes include mu, delta, and kappa receptors. Sigma receptors bind several psychoactive substances, including certain opioids, but their endogenous ligands are not known.