Rhino defines H3K9me3-marked piRNA clusters
نویسندگان
چکیده
منابع مشابه
Rhino defines H3K9me3-marked piRNA clusters
piRNAs (PIWI-interacting RNAs), which are generally 24–32 nucleotides in length, are defined by their specific association to the PIWI subfamily of AGO/ PIWI family proteins. piRNAs are mainly made in animal gonads, and are essential to silence transposons during germline development [1]. In Drosophila, the genomic regions that transcribe piRNA precursors are named as piRNA clusters. The primar...
متن کاملThe Rhino-Deadlock-Cutoff Complex Licenses Noncanonical Transcription of Dual-Strand piRNA Clusters in Drosophila
Argonaute proteins of the PIWI clade are central to transposon silencing in animal gonads. Their target specificity is defined by 23-30 nt PIWI interacting RNAs (piRNAs), which mostly originate from discrete genomic loci termed piRNA clusters. Here, we show that a complex composed of Rhino, Deadlock, and Cutoff (RDC) defines dual-strand piRNA clusters genome-wide in Drosophila ovaries. The RDC ...
متن کاملTransgenerationally inherited piRNAs trigger piRNA biogenesis by changing the chromatin of piRNA clusters and inducing precursor processing.
Small noncoding RNAs that associate with Piwi proteins, called piRNAs, serve as guides for repression of diverse transposable elements in germ cells of metazoa. In Drosophila, the genomic regions that give rise to piRNAs, the so-called piRNA clusters, are transcribed to generate long precursor molecules that are processed into mature piRNAs. How genomic regions that give rise to piRNA precursor...
متن کاملThe Drosophila HP1 Homolog Rhino Is Required for Transposon Silencing and piRNA Production by Dual-Strand Clusters
Piwi-interacting RNAs (piRNAs) silence transposons and maintain genome integrity during germline development. In Drosophila, transposon-rich heterochromatic clusters encode piRNAs either on both genomic strands (dual-strand clusters) or predominantly one genomic strand (uni-strand clusters). Primary piRNAs derived from these clusters are proposed to drive a ping-pong amplification cycle catalyz...
متن کاملMisprocessed tRNA response targets piRNA clusters.
Germline PIWI-interacting RNA (piRNA) clusters have a characteristic transcriptional status; although they do not have their own promoters, both genomic strands are transcribed, while splicing and 30 processing signals are neglected. How this transcription is maintained remains unknown. Molla-Herman et al (2015) discovered that mutations in a tRNA processing factor cause the loss of transcripti...
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ژورنال
عنوان ژورنال: Oncotarget
سال: 2015
ISSN: 1949-2553
DOI: 10.18632/oncotarget.5178