From: Kevin Cook <kcook@XXXX> To: flybase-updates@XXXX Cc: Stacey Christensen <sjchristXXXX>, Kim Cook <ruacookXXXX>, kaufman@XXXX Subject: Isolation and characterization of Df(2R)BSC550 Date: Wed, 11 Jun 2008 14:30:27 -0400 ( 19:30 BST) Isolation and characterization of Df(2R)BSC550 Stacey Christensen, Kim Cook and Kevin Cook Bloomington Stock Center Indiana University Df(2R)BSC550 was isolated as a FLP recombinase-induced recombination event involving P{XP}Hmgs[d08415] and PBac{WH}f05117. The deletion was isolated as a chromosome lacking miniwhite markers in progeny of P{hsFLP}1, y[1] w[1118]; P{XP}Hmgs[d08415]/PBac{WH}f05117 males crossed to w[1118]; P{hs-hid}2, wg[Sp-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}BSC550 from the segment of P{XP}Hmgs[d08415] to the left of its FRT site and the segment of PBac{WH}f05117 to the right of its FRT site. Its presence was verified using the PCR methods and primers described in Parks et al. The cytological breakpoints of Df(2R)BSC550 predicted from the Release 5 genomic coordinates of the transposable element insertions sites are 53C1;53C6. Df(2R)BSC550 failed to complement l(2)k07824[k07824]. __________________________________________________________ Kevin Cook, Ph.D. Bloomington Drosophila Stock Center Department of Biology http://flystocks.bio.indiana.edu Jordan Hall 142 Indiana University 812-856-1213 1001 E. Third St. 812-855-2577 (fax) Bloomington, IN 47405-7005 kcook@XXXX