| GO | Name |
| GO:0004930 | G protein-coupled receptor activity |
| GO:0004985 | G protein-coupled opioid receptor activity |
| GO:0005654 | nucleoplasm |
| GO:0005829 | cytosol |
| GO:0005886 | plasma membrane |
| GO:0005887 | integral component of plasma membrane |
| GO:0006955 | immune response |
| GO:0007186 | G protein-coupled receptor signaling pathway |
| GO:0007193 | adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway |
| GO:0007200 | phospholipase C-activating G protein-coupled receptor signaling pathway |
| GO:0007218 | neuropeptide signaling pathway |
| GO:0007268 | chemical synaptic transmission |
| GO:0007600 | sensory perception |
| GO:0007626 | locomotory behavior |
| GO:0016021 | integral component of membrane |
| GO:0019233 | sensory perception of pain |
| GO:0031635 | adenylate cyclase-inhibiting opioid receptor signaling pathway |
| GO:0038003 | G protein-coupled opioid receptor signaling pathway |
| GO:0038048 | dynorphin receptor activity |
| GO:0042277 | peptide binding |
| GO:0042923 | neuropeptide binding |
| GO:0043005 | neuron projection |
| GO:0045202 | synapse |
| GO:0046877 | regulation of saliva secretion |
| GO:0051607 | defense response to virus |