A collection of stocks of UAS-ORF transgenic recombinants that carry the ORF of interest marked by a C-terminal HA epitope tag and preceded by Scer\UAS sequences, Hsp70 promoter sequences and a Kozak consensus sequence for efficient translation. All constructs also carry the w+mC mini-white marker, and all have been introduced by recombination into a site at 86F on the third chromosome. Controlled expression of the ORFs can be effected by introduction of Scer\GAL4 drivers.