ORN_VM4 [FBbt_00110018]

ORN_VM4

ID: FBbt_00110018

Adult olfactory receptor neuron that expresses the ionotropic receptor (Ir) 76a and the co-receptors Ir76b and Ir25a and has its dendrite in antennal coeloconic sensillum ac4 (Benton et al., 2025). It responds to phenylethylamine, ethylamine and ammonia (Benton et al., 2009; Benton et al., 2025). Its axon innervates antennal lobe glomerulus VM4 bilaterally (Silbering et al., 2011; Benton et al., 2025). It develops from an Nba precursor (Benton et al., 2025). There are approximately 30 of these cells per side in females and 24 in males (Grabe et al., 2016; Benton et al., 2025).

Note that some Or35a cells (which innervate ac3) also express Ir76a (Benton et al., 2025).