XACT is a primate-specific TE-derived lncRNA that coats active X chromosomes in pluripotent cells and may contribute to species-specific regulation of X chromosome inactivation. Here, the authors investigate TEs associated with the XACT locus and identify a critical enhancer for its regulation, which evolved from an ancestral group of mammalian endogenous retroviruses, prior to the emergence of XACT.
- Miguel Casanova
- Madeleine Moscatelli
- Claire Rougeulle
