Isolation and characterization of Df(2L)BSC105
Jennifer Deal and Kevin Cook
Bloomington Stock Center
Indiana University
Df(2L)BSC105 was isolated as a FLP recombinase-induced recombination event involving PBac{WH}f06874 and P{XP}d05609. The deletion was isolated as a chromosome lacking miniwhite markers in progeny of P{hsFLP}1, y1 w1118; PBac{WH}f06874/P{XP}d05609 males crossed to w1118; P{w+mC=hs-hid}2, wgSp-1/CyO females. These 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}BSC105 from the segment of PBac{WH}f06874 to the left of its FRT site and the segment of P{XP}d05609 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 PBac{WH}f06874 to be at Release 3 genomic coordinate 20821521 on chromosome arm 2L and the insertion site of P{XP}d05609 to be at Release 3 genomic coordinate 20860125 on arm 2L. The Gene Disruption project determined the insertion site of PBac{WH}f06874 to be at Release 3 genomic coordinate 20821642 on arm 2L. The cytological breakpoints of Df(2L)BSC105 predicted from these coordinates are 38F2;38F4. It failed to P{SUPor-P}CG9339KG09864, Df(2L)Exel7080 and Df(2L)Exel7079.