Isolation and characterization of Df(3L)BSC844
Stacey Christensen, Kim Cook and Kevin Cook
Bloomington Stock Center
Indiana University
Df(3L)BSC844 was isolated as a FLP recombinase-induced recombination event involving PBac{RB}CG6885e01335 and P{XP}d08572. The deletion was isolated as a chromosome lacking miniwhite markers in progeny of w1118; P{ hs-hid}3, Dr1/TM6C, Sb1 cu1 females crossed to P{hsFLP}1, y1 w1118; PBac{RB}CG6885e01335/P{XP}d08572 males. The males were heat shocked as larvae as described in Parks et al., Nature Genetics 36: 288-292, 2004 (FBrf0175003). The recombination event generated the genetic element P+PBac{XP5.RB3}BSC844 from the segment of PBac{RB}CG6885e01335 to the left of its FRT site and the segment of P{XP}d08572 to the right of its FRT site. Its presence was verified using the PCR methods and primers described in Parks et al. with the substitution of the primer 5'-GCTTCTAAACGCTTACGCATAAACGATG-3' for the RB3' plus or RB3' minus primer in the Hybrid PCR protocol in the Supplementary Methods. The breakpoints of Df(3L)BSC844 predicted from the Release 5 genomic coordinates of the transposable element insertion sites are  3L:18737336 ;18891426 and the cytological breakpoints predicted from these coordinates are 75D8;75E4. Df(3L)BSC844 failed to complement ftz-f103649.