Bauer, Moritz, 1987-Payer, BernhardFilion, Guillaume2022-10-252022-10-252022Bauer M, Payer B, Filion GJ. Causality in transcription and genome folding: Insights from X inactivation. Bioessays. 2022 Oct;44(10):e2200105. DOI: 10.1002/bies.2022001050265-9247http://hdl.handle.net/10230/54562The spatial organization of genomes is becoming increasingly understood. In mammals, where it is most investigated, this organization ties in with transcription, so an important research objective is to understand whether gene activity is a cause or a consequence of genome folding in space. In this regard, the phenomena of X-chromosome inactivation and reactivation open a unique window of investigation because of the singularities of the inactive X chromosome. Here we focus on the cause-consequence nexus between genome conformation and transcription and explain how recent results about the structural changes associated with inactivation and reactivation of the X chromosome shed light on this problem.application/pdfeng© 2022 The Authors. BioEssays published by Wiley Periodicals LLC. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.info:eu-repo/semantics/articlehttp://dx.doi.org/10.1002/bies.202200105X-inactivationX-reactivationChromatinGenome organizationTranscriptioninfo:eu-repo/semantics/openAccess