UASt regulatory sequences drive expression of VR1(E600K).
Flies expressing Mmmm\VR1E600K.Scer\UAS under the control of either Scer\GAL4E49 or Scer\GAL4Gr5a.8.5 show robust extension of the rostrum in response to heat delivered by a heated probe brought within a few millimetres of the fly.
Flies expressing Mmmm\VR1E600K.Scer\UAS under the control of Scer\GAL4E409 are attracted to 10μM and 100μM capsaicin (wild-type flies are neutral to this compound at these concentrations).
Flies expressing Mmmm\VR1E600K.Scer\UAS under the control of Scer\GAL4Tre.8.5.cCa are attracted to 10μM and 100μM capsaicin, while flies expressing Mmmm\VR1E600K.Scer\UAS under the control of Scer\GAL4Gr66a.3.153 show an avoidance response to 10μM and 100μM capsaicin (wild-type flies are neutral to this compound at these concentrations).