How the activity of transposable elements is regulated is not well understood. A new study now shows that the Microprocessor complex, which is required for microRNA biogenesis, also recognizes and binds RNAs derived from human LINE-1, Alu and SVA retrotransposons and that it acts as a post-transcriptional repressor of mammalian retrotransposons in vivo.
- Sara R Heras
- Sara Macias
- Javier F Cáceres