Isolation and characterization of Df(3L)BSC574
Stacey Christensen, Kim Cook and Kevin Cook
Bloomington Stock Center
Indiana University
Df(3L)BSC574 was isolated as a FLP recombinase-induced recombination event involving PBac{WH}CG6931f00440 and P{XP}d03723. The deletion was isolated as a chromosome lacking miniwhite markers in progeny of w1118; P{hs-hid}3, Dr1/TM6C, Sb1 females crossed to P{hsFLP}1, y1 w1118; PBac{WH}CG6931f00440/P{XP}d03723 males. The males were heat shocked as larvae as described in Parks et al., Nature Genetics 36: 288-292, 2004 (FBrf0175003). This cross and crosses in preceding and succeeding generations maintained the original genetic background of the Exelixis insertion stocks (Thibault et al., Nature Genetics 36: 283-287, 2004; FBrf0175002). The recombination event generated the genetic element P+PBac{XP5.WH5}BSC574 from the segment of PBac{WH}CG6931f00440 to the left of its FRT site and the segment of P{XP}d03723 to the right of its FRT site. Its presence was verified using the PCR methods and primers described in Parks et al. Exelixis, Inc. determined the insertion site of P{XP}d03723 to be Release 3 genomic coordinate 12039353 on chromosome arm 3L. The Gene Disruption project determined the insertion site of P{XP}d03723 to be Release 3 genomic coordinate 12039369 on arm 3L. This corresponds to 68F2 on the Release 3 and Release 5 genome maps. The predicted position of PBac{WH}CG6931f00440 on the Release 5 map is 68F1. Consequently, the cytological breakpoints of Df(3L)BSC574 are predicted to be 68F1;68F2. Df(3L)BSC574 failed to complement rols08232 and Df(3L)BSC395.