Correction to: Nature Communications https://doi.org/10.1038/s41467-017-00698-y, published online 21 September 2017.

In the original version of this Article, the in-figure legend for Fig. 5d contained an error, in which the labels ‘B6/B6’ and ‘B6/L274G’ were inadvertently swapped. This has now been corrected in the PDF and HTML versions of the Article.