Correction to: Nature https://doi.org/10.1038/s41586-018-0832-5, published online 02 January 2019.

In Fig. 5b and 5d of this Article, the arrows showing transmembrane domain rotations were inadvertently pointing anticlockwise instead of clockwise. Similarly, ‘anticlockwise’ should have been ‘clockwise’ in the sentence ‘This conformational change of the ECD triggers a clockwise rotation of the TMD.’ In addition, in Extended Data Table 1, the units of the column ‘Model resolution’ should have been Å instead of Å2. The original Article has been corrected online.