DegrAAAded into silence.
basic_science · Level V
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Abstract
In fission yeast, RNA interference (RNAi)-dependent heterochromatin formation silences transgenes inserted at centromeres. In this issue, Bühler et al. (2007) demonstrate that the RNAi machinery directly targets transgene transcripts. Furthermore, they link transgene silencing to a protein complex resembling the TRAMP complex of budding yeast, which promotes transcript degradation via the exosome. Thus, RNAi-independent transcript degradation may also contribute to heterochromatin gene silencing.
Medical subject headings
- Fungal Proteins
- RNA Interference
- Schizosaccharomyces
- Transcription, Genetic
- Transgenes