Isolation and characterization of Df(2R)BSC888
Kim Cook and Kevin Cook
Bloomington Stock Center
Indiana University
Df(2R)BSC888 was isolated as a FLP recombinase-induced recombination event involving PBac{WH}CG8389f03200 and P{XP}CG4398d00549. The deletion was isolated as a chromosome carrying two copies of the miniwhite marker in progeny of P{hsFLP}1, y1 w1118; PBac{WH}CG8389f03200/P{XP}CG4398d00549 males crossed to w1118; P{hs-hid}2, wgSp-1/SM6a 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{XP3.WH3}BSC888 from the segment of PBac{WH}CG8389f03200 to the left of its FRT site and the segment of P{XP}CG4398d00549 to the right of its FRT site. The breakpoints of Df(2R)BSC888 predicted from the Release 5 genomic coordinates of the transposable element insertion sites are  2R:11898369 ;12319393 and the cytological breakpoints predicted from these coordinates are 52D13;53C4. Df(2R)BSC888 failed to complement Khc8 and Df(2R)BSC434.