The transgenic lines were created by use of the phiC31 integrase method, targeting the transgenes to the landing site ZH-attP-86Fb on chromosome 3R. This landing site was created with the construct pM{3xP3-RFPattP} that is marked by 3xP3-RFP. This attP landing site is located within cytological region 86F (genomic position: 7634080/7634081) in the 5' intron of the two longer isoforms of the gene chloride channel-a (ClC-a; CG31116). This site displays a relatively strong Gal4-dependent transgene expression. We have detected some basal expression at this site during early embryonic development, thus not all inserted transgenes resulted in homozygous stocks. The UAS-ORF-3xHA transgenes were inserted with the pGW-HA.attB vector, i.e. all the ORFs are C-terminal tagged with the 3xHA epitope. Note, all UAS-ORF-3xHA transgenes created with the pGW-HA.attB vector allow exchange of either the promoter or the epitope tag by crossing the UAS-ORF-3XHA line with either epitope tag or promoter 'swapping' lines (FLP/FRT-mediated in vivo exchange). Detailed information on all these issues can be found on the FlyORF website and in the referenced literature.