Function
Autoreceptor for octopamine (OA), which is a neurotransmitter, neurohormone, and neuromodulator in invertebrates (PubMed:15998303, PubMed:21186359). Essential for ovulation and fertilization (PubMed:25099506, PubMed:25353988). During ovulation it mediates the OA-induced relaxation of the oviduct visceral muscles, by increasing cAMP levels and activating effectors such as calmodulin-dependent kinase II (CaMKII) and cAMP-dependent protein kinase A (PKA) pathways (PubMed:25353988). Positively regulates synaptic growth; an action that is antagonized by Octbeta1R (PubMed:21186359, PubMed:22553037).
Sequence
MLLCDGLGPEPPRQRHRNRTSAARIRKRPKCCCGDGGSGNQAEQPGGIVSNPISYGQSLTTLARVTAAALTTAAMLHTTNALAATGSSSASNSSTGGIALPLGTATPATHELNATQPFGGSGLNFNESGAGLSDHHHHQQHNPDEDWLDNIVWVFKAFVMLLIIIAAICGNLLVIISVMRVRKLRVITNYFVVSLAMADIMVAIMAMTFNFSVQVTGRWNFSPFLCDLWNSLDVYFSTASILHLCCISVDRYYAIVKPLKYPISMTKRVVGIMLLNTWISPALLSFLPIFIGWYTTPQHQQFVIQNPTQCSFVVNKYYAVISSSISFWIPCTIMIFTYLAIFREANRQEKQLMMRHGNAMLMHRPSMQPSGEALSGSGSSKTLTLHEVEQEHTPTKDKHLIKMKREHKAARTLGIIMGTFILCWLPFFLWYTLSMTCEECQVPDIVVSILFWIGYFNSTLNPLIYAYFNRDFREAFRNTLLCLFCNWWKDRHLPLDIDIRRSSLRYDQRAKSVYSESYLNSTTPSHRRQSQMVDNL