G to A transition at the splice acceptor site of the second intron.
Nucleotide substitution: G?A. Mutation at the splice acceptor site of the second intron.
G2991279A
G?A
Mutation at the splice acceptor site of the second intron of okr.
metaphase & condensed nuclear chromosome | conditional qualifier
The survival of okr17-11/Df(2L)JS17 males carrying a source of transposase (P\TΔ2-3) and a P-element that can be mobilised (P{}whd80617) is reduced to 22% compared to controls lacking a source of transposase, indicating that okr is required for the repair of P-element induced double-strand breaks in males. The survival of okr17-11/Df(2L)JS17 females carrying a source of transposase (P\TΔ2-3) and a P-element that can be mobilised (P{}whd80617) is reduced to 68% compared to controls lacking a source of transposase.
Irradiated mutants regulate both S and M phases and undergo cell death as well as wild-type. However, pupariation is delayed, eye discs degenerate and mutant eye discs are unable to maintain organised cell proliferation. In metaphase chromosomes from larval neuroblasts broken chromosomes are seen in approximately 37% of metaphase cells 3hr after irradiation (compared to about 6% in wild-type).
Hemizygous okr17-11/Df(2L)JS17 males larvae in which P-element excision is induced do not survive, and only 10% of females survive. The frequency of reversion of the whd80k17 allele (using walter as a template) in these flies is reduced fivefold compared to control flies. Hemizygous okr17-11/Df(2L)JS17 larvae are more sensitive to mitomycin C (MMC) and cis-diamminedichloroplatinum (cisDDP) than control heterozygous larvae. Somatic recombination induced by X rays does not occur in hemizygous flies. Somatic recombination induced by MMC, cisDDP or methyl methanesulfonate is reduced compared to control flies. okrA19-10/Df(2L)JS17 and okrA19-10/okr17-11 mutants have the same methyl methanesulfonate and X ray hypersensitivity as okrA19-10/Df(2L)JS17 mutants.
Early egg development is normal but the eggs do not hatch. The larvae of mutant flies are highly sensitive to X rays and methyl methanesulfonate. The mutants exhibit a defect in induced mitotic recombination after exposure to X-rays.
okr17-11 has radiation sensitive | embryonic stage phenotype, enhanceable by DNAlig457
okrA19-10/okr17-11 has radiation sensitive phenotype, enhanceable by BlmD3/BlmD2
okr17-11/okr17-11 is an enhancer of radiation sensitive | embryonic stage phenotype of DNAlig457
okrA19-10/okr17-11 is an enhancer of radiation sensitive phenotype of BlmD3/BlmD2
okr17-11/okrA19-10 mus309D2/mus309D3 double mutants show a synergistic effect on sensitivity to X rays; the sensitivity is increased 40 fold compared to wild-type in double mutants. okr17-11/okrA19-10 mus309D2/mus309D3 double mutants do not show a synergistic effect on sensitivity to methyl methanesulfonate.