Erratum

After publication of the original article [1], it came to the authors’ attention that a funding source received by B. Henrissat had been accidently omitted from the Acknowledgements. The following sentence should have been included in the original article:

This work was supported in part by a grant to BH: European Union’s Seventh Framework Program (FP/2007/2013)/European Research Council (ERC) Grant Agreement 322820.