A set of UAS-ORF transgenic constructs that are designed for use in a bimolecular fluorescence complementation (BiFC) assay. Each transgenic construct carries an ORF of interest tagged with a C-terminal N-m9Venus split fluorescent protein fragment and preceded by UASt regulatory sequences. The ORF is flanked by a pair of incompatible FRT sites (FRT5 and FRT2), which allows for future in vivo exchange of either the promoter or the C-terminal tag sequence. All constructs also carry the w+mC mini-white marker. Controlled expression of the ORFs can be effected by introduction of GAL4 drivers.
Generated by an in vivo FLP recombinase-mediated swapping procedure; in each case, the C-terminal 3xTag:HA tag of an appropriate construct from the FlyORF-3 collection has been replaced with a N-m9Venus tag, together with a shortening of the linker sequence between the upstream FRT2 site and the tag.
The FlyORF-VN and FlyORF-VNshort collections differ in the length of the linker that separates the FRT2 site from the C-terminal N-m9Venus tag; the linker is 24 residues in the FlyORF-VN collection and 12 residues in the FlyORF-VNshort collection.