Correction to: Nature Structural & Molecular Biology https://doi.org/10.1038/s41594-020-0508-3, published online 28 September 2020.

In the version of this article initially published online, the title of the Fig. 4 caption, “DNA loops extruded by condensing,” was incorrect. The correct title is “DNA loops extruded by condensin.” The error has been corrected in the print, PDF and HTML versions of the article.