Yu, Y., Gu, J., Jin, Y., Luo, Y., Preall, J. B., Ma, J., Czech, B., Hannon, G. J. (October 2015) Panoramix enforces piRNA-dependent cotranscriptional silencing. Science, 350 (6258). pp. 339-42. ISSN 1095-9203 (Electronic)0036-8075 (Linking)
Abstract
The Piwi-interacting RNA (piRNA) pathway is a small RNA-based innate immune system that defends germ cell genomes against transposons. In Drosophila ovaries, the nuclear Piwi protein is required for transcriptional silencing of transposons, though the precise mechanisms by which this occurs are unknown. Here we show that the CG9754 protein is a component of Piwi complexes that functions downstream of Piwi and its binding partner, Asterix, in transcriptional silencing. Enforced tethering of CG9754 to nascent messenger RNA transcripts causes cotranscriptional silencing of the source locus and the deposition of repressive chromatin marks. We have named CG9754 "Panoramix," and we propose that this protein could act as an adaptor, scaffolding interactions between the piRNA pathway and the general silencing machinery that it recruits to enforce transcriptional repression.
| Item Type: | Paper |
|---|---|
| Subjects: | bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > transcription bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > genes, structure and function > gene silencing bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > piRNA |
| CSHL Authors: | |
| Communities: | CSHL Cancer Center Program > Cancer Genetics and Genomics Program CSHL Cancer Center Program > Gene Regulation and Inheritance Program CSHL labs > Hannon lab School of Biological Sciences > Publications |
| Depositing User: | Matt Covey |
| Date: | 16 October 2015 |
| Date Deposited: | 27 Oct 2015 19:40 |
| Last Modified: | 08 Jun 2021 13:13 |
| PMCID: | PMC4722808 |
| Related URLs: | |
| URI: | https://repository.cshl.edu/id/eprint/31961 |
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