The N-terminal 233 out of 403 amino acids have been deleted from Gr98b.
Gr98b1 mutant flies do not show significant changes in the expected avoidance response to food laced with acetic acid (5%), as compared to controls.
Gr98b1 mutant flies show reduced L-canavanine avoidance in a two-way choice behavioral assay compared with wild type flies. L-canavanine-induced action potentials are also abolished. Gr98b1 mutant flies display robust aversion and electrophysiological responses to papaverine, strychnine, denatonium, berberine, lobeline, caffeine, N,N-diethyl-m-toluamide (DEET) and quinine.
Gr98b1 is rescued by Scer\GAL4Gr66a.PD/Gr98bUAS.cSa
Gr98b1 is rescued by Scer\GAL4Gr8a.0.7/Gr98bUAS.cSa
Gr98b1 is rescued by Gr98bUAS.cSa/Scer\GAL4Gr98b.8.9
Expression of Gr98bScer\UAS.cSa under the control of any of Scer\GAL4Gr66a.PD, Scer\GAL4Gr8a.0.7 or Scer\GAL4Gr98b.8.9 rescues the L-canavanine avoidance defects seen in Gr98b1 mutant flies. The loss of L-canavanine-induced action potentials is rescued when Gr98bScer\UAS.cSa is expressed under the control of Scer\GAL4Gr66a.PD.