The flamenco gene controlling transpositions of the gypsy retrovirus is localized in the 20A1-3 region, in which eight open reading frames organized in a cluster were discovered: DIP1, three repeats of CG32500 and CG32819, and CG14476. Analysis of the genes composing the cluster indicates that their transcription in Drosophila melanogaster is a stage-specific process. Comparison of the expression of these genes in the strains OreR, SS, and MS having the flamenco phenotype and in the strain 413 having the flamenco+ phenotype revealed differences only for the DIP1 gene, transcription of this gene being altered only in the OreR strain. Thus, mutant flamenco alleles are differently expressed in different strains. The structural organization of the flamenco gene region was studied in different Drosophila species: D. sechellia, D. simulans, D. mauritiana, D. yakuba, D. erecta, D. virilis, D. ananassae, D. grimshawi, and D. pseudoobscura. The genes of the cluster were found to be highly conserved in genomes of different species, but in none of them, except D. sechellia, the structural organization of the region repeats the structure of the D. melanogaster cluster.
Russian Journal of Genetics – Springer Journals
Published: Oct 11, 2009
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