Carbon monoxide metabolism in freshwater anaerobic methanotrophic archaea

Anaerobic methanotrophic archaea mitigate methane emissions in anoxic environments as key members of the biological methane filter. Despite their ecological significance, physiology of anaerobic methanotrophs remains poorly understood. Here, we demonstrate that the freshwater methanotroph 'Candidatus Methanoperedens BLZ2' prefers carbon monoxide (CO) over methane as an electron donor. This study contains a metagenome of used inoculum and multiple metatranscriptomes of tested conditions.