Extracellular transfer by Candidatus Methanoperedens nitroreducens

Anaerobic methanotrophic archaea are crucial in mitigating the atmospheric release of methane. Genomic evidence has indicated that cytochromes may facilitate the extracellular electron transfer of ANME to different electron sinks. However, the physiologically relevant mechanisms and specificity of these cytochromes in ANMEs EET are not well understood. Here we examine cytochrome mediated EET by Candidatus Methanoperedens nitroreducens for the reduction of metals and electrodes in bioreactor enrichment batches.