Correction to: Nature Cell Biology https://doi.org/10.1038/s41556-018-0146-8, published online 30 July 2018.

In the version of this Letter originally published, the name of co-author Safa Lucken-Ardjomande Häsler was coded wrongly, resulting in it being incorrect when exported to citation databases. This has been corrected, though no visible changes will be apparent.