Abstract
Drosophila melanogaster is a common genetic object for research of RNA-interference pathways and mobile elements regulation. Nowadays taking a part in control of retrotransposon expression the system of piRNA-interfecence well studied in ovary tissues. It is strongly believed that D. melanogaster piRNA-interference is used for retrotransposon suppression only in gonads, and two distinct pathways of piRNA biogenesis exist. Both mechanisms use transcripts of piRNA-clusters (accumulations of truncated and defect mobile elements copies): from unstrand clusters in the first case and from dualstrand clusters in the second, transcribed with one or both DNA chains correspondingly. It is well-known that proper dualstrand clusters function depends on the gene rhino, while unistrand clusters are transcribed rhino-independent and transcripts are spliced. In this paper we show that rhino participates in unistrand flamenco transcripts splicing and the piRNA-interference significance for regulation of several retrotransposons not only in gonads, but in other organs.
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