Correction to: Nature Communications https://doi.org/10.1038/s41467-018-08246-y, published online 28 January 2019

The original version of this Article contained errors in Fig. 4. In panel a, the labels ‘F420-reducing NiFe hydrogenase (group 3a)’ and ‘Group 2 NiFe hydrogenase’ were misplaced. These errors have been corrected in both the PDF and HTML versions of the Article.