Correction to: Nature Communications https://doi.org/10.1038/s41467-018-03291-z; published online 02 March 2018

The originally published version of this article contained an error in the subheading ‘Heme is required for CO-dependent channel activation’, which was incorrectly given as ‘Hame is required for CO-dependent channel activation’. This has now been corrected in both the PDF and HTML versions of the Article.