Atpα protein expression levels are reduced in heterozygotes.
AtpαDTS2R1 has a legion that removes part of exon 4, 5 and 6.
Homozygous embryos cannot form paracellular barriers, show elongated dorsal trunks and show gaps in the ganglionic branches.
Mutants have tracheal defects, including dorsal trunks that are longer than normal and have diameter defects. Lumens are missing in the ganglionic branches. In contrast to wild type, the barrier function has also been lost in the trachea, allowing a dye to penetrate and accumulate in the tracheal lumen.
Unlike wild-type, post stage 15 trachea in AtpαDTS1R2 homozygotes are unable to exclude from their lumens, a fluorescently labelled 10kDa dextran injected into the body cavity. This is consistent with these trachea lacking a functioning septate junction barrier.
AtpαDTS1R2 has tracheal dorsal trunk primordium phenotype, suppressible by Scer\GAL4da.G32/Rnor\Atp1a1UAS.GFP
AtpαDTS1R2 has septate junction & embryonic tracheal system phenotype, suppressible by Scer\GAL4da.G32/Rnor\Atp1a1UAS.GFP
AtpαDTS1R2 has ganglionic tracheal branch primordium phenotype, suppressible by Scer\GAL4da.G32/Rnor\Atp1a1UAS.GFP
AtpαDTS1R2 is rescued by AtpαLongA.UAS/Scer\GAL4da.G32
AtpαDTS1R2 is rescued by Scer\GAL4da.G32/AtpαLongB.UAS
AtpαDTS1R2 is rescued by AtpαLongC.UAS/Scer\GAL4da.G32
AtpαDTS1R2 is rescued by AtpαD394N.LongC.UAS/Scer\GAL4da.G32
AtpαDTS1R2 is partially rescued by Scer\GAL4da.G32/AtpαShortA.UAS
AtpαDTS1R2 is partially rescued by AtpαShortB.UAS/Scer\GAL4da.G32
AtpαDTS1R2 is partially rescued by Scer\GAL4da.G32/AtpαShortC.UAS
AtpαDTS1R2 is partially rescued by Scer\GAL4da.G32/AtpαShortD.UAS
AtpαDTS1R2 is partially rescued by Scer\GAL4da.G32/AtpαD355N.ShortC.UAS
AtpαDTS1R2 is partially rescued by AtpαD394N.LongB.UAS/Scer\GAL4da.G32
Palladino
Revertant.