Correction to: Nature Chemical Biology https://doi.org/10.1038/s41589-018-0184-3, published online 10 December 2018.

In the version of this article originally published, the references were incorrectly re-ordered during production. The hyphen in “N6-methyladenosine” in the title was also superscript. The errors have been corrected in the HTML and PDF versions of the paper.