A P{lacW} element is inserted upstream of nucleotides 352-375, which correspond to the Walker A motif residues 118-125 in the expressed product. There are stop codons in all reading frames at the 5' end of the insertion, meaning that a 122-residue truncated protein could be produced.
Insertion of a P{lacW} element.
lethal (with Df(2L)glu-17C)
mitosis & nuclear chromosome (with gluk06821a)
mitotic domain & mitotic anaphase
gluk08819 mutant embryos have a lower ratio of mitosis to apoptosis compared to wild-type embryos. This ratio decreases further with age.
About 9/10 of prophases or metaphases show abnormal condensation. About 4/5 of gluk06821a/gluk08819 anaphase or telophase figures show chromatin bridges, those bridges that persist to telophase also show abnormal decondensation. Mutant brains are smaller and show higher levels of apoptosis than wild-type. 2.5% of cells in gluk06821a/gluk08819 brains are apoptotic (compared to 0.5% in wild-type). Mean chromosome length in gluk06821a/gluk08819 brains that have been incubated in colchicine does not differ from wild-type.
Embryos show anaphase bridges in mitotic domains.
Ventral and lateral PNS of homozygous embryos exhibit subtle organisation defects resulting in irregularly shaped clusters.
glu[+]/gluk08819 is an enhancer of male semi-fertile phenotype of Cap-H2Z3-5163/Cap-H2Z3-0019
gluk08819, pros17 has abnormal mitotic cell cycle phenotype
Cap-H2Z3-0019, glu[+]/gluk08819 has polytene chromosome phenotype, enhanceable by slmb[+]/slmbUU11
Cap-H2Z3-0019, glu[+]/gluk08819 has nurse cell phenotype, enhanceable by slmb[+]/slmbUU11
Cap-H2Z3-0019, glu[+]/gluk08819 has polytene chromosome phenotype, enhanceable by slmb3A1/slmb[+]
Cap-H2Z3-0019, glu[+]/gluk08819 has nurse cell phenotype, enhanceable by slmb3A1/slmb[+]
Cap-H2Z3-0019, glu[+]/gluk08819 has nurse cell phenotype
Cap-H2Z3-0019, glu[+]/gluk08819 has polytene chromosome phenotype
Cap-H2Z3-0019, glu[+]/gluk08819 has polytene chromosome & nurse cell phenotype
gluk08819/+ ; Cap-H2Z3-0019/+ double heterozygotes show some unpairing of polytene chromosomes in nurse cells. Unpairing is significantly increased if the animals are also heterozygous for either slmbUU11 or slmb3A1.
A gluk08819 heterozygous background lead to a substantial decrease in fertility for Cap-H2Z3-5163/Cap-H2Z3-0019 mutants.
77.3 +/- 9.1% of the nurse cells in stage 10 egg chambers of gluk08819/+ ; Cap-H2Z3-0019/+ double heterozygous females show persistence of polyteny, with the chromosomes having a loosened, but clear, polytene morphology.
I. Kiss.
After six generations of outcrossing the lethality continued to segragate with the P{lacW} insertion.
Complements: Cask03902. Complements: Mhck10423. Complements: l(2)k13905k13905. Complements: l(2)k15102k15102. Complements: l(2)k16215k16215.
Lethality not revertible with excision of the P{lacW} insert, but lethality over Df(2L)H20 suggests the insertion may be the cause of the phenotype.