Correction to: Nature Cell Biology https://doi.org/10.1038/s41556-019-0347-9, published online 1 July 2019.

In the version of this article initially published, the first sentence of the final paragraph of the introduction incorrectly stated “…uncharged amino acids.” The correct text is “...uncharged tRNAs...”. The error has been corrected in the HTML and PDF versions of the article.