Octopamine receptor in mushroom bodies (OAMB) (OAMB)

The Varroa destructor Octopamine receptor in mushroom bodies (OAMB) is a G protein-coupled receptor (GPCR) that serves as a vital mediator of octopaminergic signaling in the parasitic mite Varroa destructor (UniProt: A0A0P0V6G1). Octopamine is the primary biogenic amine in invertebrates, functioning similarly to norepinephrine in vertebrates to regulate arousal, locomotion, and reproduction (Blenau et al., 2020, Journal of Insect Physiology). In Varroa mites, OAMB is specifically linked to the regulation of ovulation and the coordination of complex behaviors necessary for parasitizing honey bees (Apis mellifera). As a therapeutic target, OAMB is of high interest for the development of acaricides because octopamine receptors are not found in vertebrates, offering a window for selective toxicity (Gross et al., 2017, Pesticide Biochemistry and Physiology). However, the high degree of homology between Varroa OAMB and the honey bee's own OAMB receptor poses a significant challenge for achieving species-specific control without harming the host (Blenau et al., 2020). Existing acaricides like Amitraz are known to interact with octopamine receptors, and research into OAMB-specific ligands continues to be a priority in managing mite resistance.

Other names

VdOAMBOctopamine receptor alpha-1-likeOctopamine receptor type 1Varroa destructor octopamine receptorOctopamine receptor in mushroom bodies

Agonist or antagonist binding to the octopamine receptor disrupts downstream G protein signaling (typically Gq or Gs), leading to physiological impairment, reproductive failure, or paralysis in the parasite.