Correction to: Nature Structural & Molecular Biology https://doi.org/10.1038/s41594-024-01322-6, published online 29 May 2024

During the final steps of figure preparation, a conversion error was introduced in Fig. 4 and Extended Data Fig. 8, changing the units of the experimentally used concentration from μM to mM. This has now been corrected in the HTML and PDF versions of the article.