Fig. 1From: Methanogens: biochemical background and biotechnological applications(Adapted from (Thauer et al. 2008; Welte and Deppenmeier 2014; Welander and Metcalf, 2005))Schematic overview of hydrogenotrophic (a), aceticlastic (b) and methylotrophic (c) methanogenesis. Hydrogenotrophic methanogenesis for Ech-containing methanogens is shown. The methylotrophic methanogenesis from methanol is displayed. Abbreviations are mentioned in the textBack to article page