Major Subtypes
There are four major subtypes of opioid receptors:
Receptor | Subtypes | Location | Function |
---|---|---|---|
delta (δ) DOP OP1 (I) |
δ1, δ2 |
|
|
kappa (κ) KOP OP2 (I) |
κ1, κ2, κ3 |
|
|
mu (μ) MOP OP3 (I) |
μ1, μ2, μ3 |
|
μ1:
μ2:
μ3:
|
Nociceptin receptor NOP OP4 |
ORL1 |
|
|
Read more about this topic: Opioid Receptor
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