Function
Autoreceptor for octopamine, which is a neurotransmitter, neurohormone, and neuromodulator in invertebrates (PubMed:15816867, PubMed:22553037). Negatively regulates synaptic growth by activating the inhibitory G protein Galphao and limiting cAMP production (PubMed:22553037). Antagonizes the action of Octbeta2R which stimulates synaptic growth (PubMed:22553037).
Sequence
MTLLQRLQAMSATTTRTILEGSISSFGGGTNEPLASKIPVLEESASHARYLKFIADGLIDEGLGSAVGSGSSIAVSVEDVVAGQAQDIQASEGSTDDADGSSHLALVFVKCFIIGFIILAAILGNMLVIVSVMRHRKLRIITNYFVVSLAVADMLVALCAMTFNASVMISGKWMFGSVMCDMWNSFDVYFSTASIMHLCCISVDRYYAIVQPLDYPLIMTQRRVFIMLLMVWLSPALLSFLPICSGWYTTTENYKYLKSNPHICEFKVNKAYAIVSSSMSFWIPGIVMLSMYYRIYQEADRQERLVYRSKVAALLLEKHLQISQIPKPRPSIQVEQSTISTMRRERKAARTLGIIMSAFLICWLPFFLWYIVSSLCDSCITPRLLVGILFWIGYFNSALNPIIYAYFNRDFRAAFKKTLKSLFPYAFYFCRRGRGRDDDRDLEFGGPSRRGTNGAQRTGSGSAEMANCVNSTASSEIHMSVMRARQYAVNVTPTTDAQMQQLHPLYTN