Isolation and characterization of Df(3R)BSC678
Stacey Christensen, Kim Cook and Kevin Cook
Bloomington Stock Center
Indiana University
Df(3R)BSC678 was isolated as a FLP recombinase-induced recombination event involving PBac{WH}lblf02857 and P{XP}d07598. The deletion was isolated as a chromosome carrying two copies of the miniwhite marker in progeny of w1118; P{hs-hid}3, Dr1/TM6C, Sb1 cu1 females crossed to P{hsFLP}1, y1 w1118; PBac{WH}lblf02857/P{XP}d07598 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{XP3.WH3}BSC678 from the segment of PBac{WH}lblf02857 to the left of its FRT site and the segment of P{XP}d07598 to the right of its FRT site. Exelixis, Inc. determined the insertion site of PBac{WH}lblf02857 to be Release 3 genomic coordinate 17235248 on chromosome arm 3R. This corresponds to 93E1 on the Release 3 and Release 5 genome maps. The predicted position of P{XP}d07598 on the Release 5 map is 93F14. Consequently, the cytological breakpoints of Df(3R)BSC678 are predicted to be 93E1;93F14. Df(3R)BSC678 failed to complement tsl00617 and InR05545.