PBac{WH}Or35af02057 is inserted 283bp upstream of the Or35a translation start codon.
Electrophysiological recordings from Or35af02057 mutants reveal a population of coeloconic sensilla that give responses characteristic of ac3A but not ac3B sensilla. For example, the strong excitatory response to butanol recorded from ac3 sensilla in wild-type is not observed in Or35af02057 mutant sensilla.