The Drosophila Genomics Resource Center cell line group have generated a set of Sg4 cell lines which contain phiC31 docking sites for use in targeted integration. These are clonal lines made from the S2 isolate Sg4 by the insertion of a phiC31 docking site consisting of a P transposon which carries an GFP reporter driven by an act5C promoter, flanked by phiC31 attP sites, identical to the docking site found in the Kc167-PP series. Each line contains a single copy of the transposon, inserted at the genomic positions listed below: Sg4-PP-3A: X: 2439616 Sg4-PP-27F: 2L: 7423926 Sg4-PP-49B: 2R: 8477447 Sg4-PP-57B: 2R: 16848568 Sg4-PP-70F: 3L: 14751088 Sg4-PP-84E: 3R: 3931905