EOG8QC3NZ GO:0016021 2/4 integral component of membrane cellular_component "The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane." [GOC:dos, GOC:go_curators] EOG8QC3NZ GO:0004930 1/4 G-protein coupled receptor activity molecular_function "Combining with an extracellular signal and transmitting the signal across the membrane by activating an associated G-protein; promotes the exchange of GDP for GTP on the alpha subunit of a heterotrimeric G-protein complex." [GOC:bf, http://www.iuphar-db.org, Wikipedia:GPCR] EOG8QC3NZ GO:0018149 1/4 peptide cross-linking biological_process "The formation of a covalent cross-link between or within protein chains." [GOC:jsg] EOG8QC3NZ GO:0005737 1/4 cytoplasm cellular_component "All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures." [ISBN:0198547684] EOG8QC3NZ GO:0004989 1/4 octopamine receptor activity molecular_function "Combining with the biogenic amine octopamine to initiate a change in cell activity. Octopamine is found in both vertebrates and invertebrates and can have properties both of a hormone and a neurotransmitter and acts as an adrenergic agonist." [CHEBI:17134, GOC:ai]