UASt regulatory sequences drive expression of amino acids 1-104 of brk, fused to a WRPW minimal repressor motif, a nuclear localisation signal (Tag:NLS(SV40-largeT)) and two copies of Tag:HA.
Adults expressing brkNLSW.Scer\UAS.T:Ivir\HA1,T:SV40\nls2 under the control of Scer\GAL4en-e16E are recovered at 25-30oC. They show loss of wing tissue or a fusion of veins IV and V and loss of the posterior crossvein. Expression of brkNLSW.Scer\UAS.T:Ivir\HA1,T:SV40\nls2 under the control of Scer\GAL4C-765 at 30oC results in wings that are slightly smaller than normal and that have vein defects, including extra crossveins.