UASt regulatory sequences drive expression of the Tag:SS(nec) secretory signal peptide followed by two tandem copies of the Aβ (amyloid β) monomer. Both copies of Aβ are the 42 amino acid residue form. The two copies are directly fused, with no linker sequence between them.
Flies expressing Hsap\APPTNL.Aβ42.Scer\UAS under the control of Scer\GAL4GMR.PF form significant quantities of large, SDS-insoluble deposits in the head. No detectable SDS-soluble oligomeric Aβ aggregates are present.
Flies expressing one copy of Hsap\APPTNL.Aβ42.Scer\UAS under the control of Scer\GAL4elav-C155 have a significantly shorter lifespan than wild-type controls.