Gustatory and pheromone receptor 33a; Gustatory receptor which mediates acceptance or avoidance behavior, depending on its substrates. Required for sensing all nonvolatile repulsive chemicals, including tastants, pheromones, and especially N,N-Diethyl-meta-toluamide (DEET), the most widely used insect repellent worldwide. Functions also as a pheromone receptor for a male inhibitory pheromone leading to male-male courtship suppression. Belongs to the insect chemoreceptor superfamily. Gustatory receptor (GR) family. Gr66a subfamily.

Gustatory receptor for bitter taste 66a; Gustatory receptor required for response to the bitter in taste neurons. Gr66a cells respond to bitter compounds such as caffeine, theophylline, threonine or valine. Flies avoid bitter substances, suggesting that Gr66a neuron activity is sufficient to mediate avoidance behavior. Required for sensing and avoiding N,N- Diethyl-meta-toluamide (DEET), the most widely used insect repellent worldwide, as well as to L-canavanine, a plant-derived insecticide. Gr66a neurons are also involved in the sex-specific perception of molecules inducing male avoid [...]

Ionotropic receptor 76b (Ir76b) encodes a member of the Ionotropic Receptor (IR) family of variant ionotropic glutamate receptors. It functions in chemosensory detection of various amines and salt, as a probable co-receptor subunit.

Ionotropic receptor 25a; Integral part of various neural sensory systems in the antenna that provide the neural basis for the response to environmental changes in temperature (thermosensation), humidity (hygrosensation) and odor detection. Required for odor-evoked electrophysiological responses in multiple neuron classes in the antenna and is likely to function as part of an olfactory receptor complex with Ir76a and Ir76b. Together with Ir21a and Ir93a, mediates the response of the larval dorsal organ cool cells, a trio of cool-responsive neurons, to cooling and is required for cool av [...]

Pickpocket 17, isoform A; Sodium channel activity. It is involved in the biological process described with: sodium ion transport; Belongs to the amiloride-sensitive sodium channel (TC 1.A.6) family.

Gustatory receptor 5a for trehalose; Gustatory receptor required for response to the sugar trehalose in taste neurons. Gr5a neurons selectively respond to sugars, in contrast to Gr66a cells which respond to bitter compounds. Flies are attracted to sugars and avoid bitter substances, suggesting that Gr5a neuron activity is sufficient to mediate acceptance behavior. Sugar signal transduction occurs through coupling with G-proteins such as Galpha49B and G-salpha60A.

Odorant receptor 67d; Plays a role in detection and sensitivity to pheromones and signal transduction of the fatty-acid-derived male pheromone 11-cis vaccenyl acetate (cVA). Acts in concert with Snmp and lush to capture cVA molecules on the surface of Or67d expressing olfactory dendrites and facilitate their transfer to the odorant-receptor Orco complex. Necessary to mediate behavioral responses to cVA by regulating both male and female mating behavior. Activation of Or67d neurons by cVA inhibits courtship of other males, whereas in females their activation promotes receptivity to othe [...]

Gustatory receptor 68a; Dsx-dependent essential component of pheromone-driven courtship behavior. Recognizes a female pheromone involved in the second step (tapping step) of the courtship display which is essential for efficient execution of the entire courtship sequence and timely mating. Required for detection of the male sex pheromone CH503 which is transferred from males to females during mating and inhibits courtship behavior by other males. Gr68a-expressing neurons in the male foreleg relay signals to the suboesophageal zone (SEZ) and courtship suppression is mediated by the rele [...]

Gustatory and pheromone receptor 39a, isoform C; Gustatory receptor which mediates acceptance or avoidance behavior, depending on its substrates. Plays a role in sustaining courtship behavior in males, possibly through the reception of a stimulating arrestant pheromone.