UASp regulatory sequences drive expression of BicD. The protein is tagged with both Tag:FLAG and Tag:polyHis at the 3' end.
The expression of BicDScer\UAS.P\T.T:Zzzz\FLAG.T:Zzzz\His6 results in no obvious dendrite morphology defects in third instar larval class I ddaD and ddaE (under the control of Scer\GAL4221) or class IV ddaC (under the control of Scer\GAL4ppk.PG) abdominal dorsal multidendritic neurons, as compared to controls.
Expression of BicDScer\UAS.P\T.T:Zzzz\FLAG.T:Zzzz\His6 under the control of Scer\GAL4nos.UTR.T:Hsim\VP16 prevents basal redistribution of lipid droplets in the blastoderm embryo, leading to an opaque cytoplasm.
Scer\GAL4VGlut1-OK371/BicDUASp.Tag:FLAG.Tag:polyHis partially rescues BicDr5
Scer\GAL4how-24B/BicDUASp.Tag:FLAG.Tag:polyHis fails to rescue BicDr5
Ubiquitous expression of BicDScer\UAS.P\T.T:Zzzz\FLAG.T:Zzzz\His6 under the control of Scer\GAL41032.hx rescues the larval locomotion phenotype and lethality of BicDr5/Df(2L)TW119 mutants.
Pan-neuronal expression of BicDScer\UAS.P\T.T:Zzzz\FLAG.T:Zzzz\His6 under the control of Scer\GAL4elav-C155 rescues the larval locomotion phenotype and lethality of BicDr5/Df(2L)TW119 mutants.
Expression of BicDScer\UAS.P\T.T:Zzzz\FLAG.T:Zzzz\His6 in muscles under the control of Scer\GAL4how-24B fails to rescue the larval locomotion phenotype and lethality of BicDr5/Df(2L)TW119 mutants.
Locomotion of BicDr5/Df(2L)TW119 mutants is significantly improved by driving expression of BicDScer\UAS.P\T.T:Zzzz\FLAG.T:Zzzz\His6 with the motor-neuronal driver Scer\GAL4VGlut-OK371. The synapse size and muscle size phenotypes of BicDr5/Df(2L)TW119 mutants are also rescued by Scer\GAL4VGlut-OK371-driven expression of BicDScer\UAS.P\T.T:Zzzz\FLAG.T:Zzzz\His6. However, this is not sufficient to fully restore locomotion or eclosion.
The dye-release defect in BicDr5/Df(2L)TW119 mutants is fully rescued by expressing BicDScer\UAS.P\T.T:Zzzz\FLAG.T:Zzzz\His6 using the Scer\GAL4VGlut-OK371 driver.