Nature 546, 254–258 (2017); doi:10.1038/nature22800

In the Supplementary Information of this Article, on pages 3, 8 and 11, we refer to “UK Patent Application No. 1522431.4”, which pertains to the discovery of the truncated peptide analogues we used1, and specifically to the use of the modified N terminus or ‘Cap’. This patent application mentions another patent, which we cite here2. The original Article has not been corrected.