UASt regulates expression of the cDNA LD02314 with a C-terminal Tag:HA-tag (including two additional amino acids) just N-terminal to the GPI attachment site, and in which the GPI attachment site is replaced with the transmembrane domain from mCD8 (Tag:M(mCd8a)) and an EGFP tag.
udtTM.UAS.Tag:HA,Tag:M(mCd8a),EGFP/Scer\GAL4repo partially rescues udtf03018
Scer\GAL4en-e16E/udtTM.UAS.Tag:HA,Tag:M(mCd8a),EGFP partially rescues udtf03018
The expression of udtTM.UAS.Tag:HA,Tag:M(mCd8a),EGFP under the control of Scer\GAL4da.G32 rescues both the viability and blood-brain and trachea barrier defects observed in udtf03018 homozygotes. Expression under the control of Scer\GAL4repo only rescues the blood-brain barrier defect, as it does not rescue viability and the trachea is still leaky. Expression under the control of Scer\GAL4en-e16E fails to rescue viability as well as the blood-brain barrier and trachea barrier defects; this expression, however, rescues the mislocalization of the septate junction protein NrxIV in the stage 17 embryo epidermis and hindgut, but not in the trachea.