UAS regulatory sequences drive expression of Toll-6 in which two conserved residues critical for the function of the TIR domain have been mutated (mutations are E1136R in the BB loop and R1148E in the αA helix). The protein is tagged at the C-terminal end with a tag cassette composed of Tag:FLAG, 3xTag:HA, and 10xHIS.
Expression of Toll-6TIR-dead.Scer\UAS.T:Zzzz\FLAG,T:Ivir\HA1,T:Zzzz\His6 under the control of Scer\GAL4Mz19 rescues the mistargeting phenotypes seen in the Scer\GAL4Mz19-positive projection neuron dendrites and VA1d olfactory receptor axons of Toll-6ex13 animals.