Fig. 2: Proposed hydrogenotrophic and formatotrophic methanogenesis pathways in Methanobacterium Type I (A) and Type II (B) populations, respectively, from the Samail Ophiolite, Oman. | The ISME Journal

Fig. 2: Proposed hydrogenotrophic and formatotrophic methanogenesis pathways in Methanobacterium Type I (A) and Type II (B) populations, respectively, from the Samail Ophiolite, Oman.

From: Diversification of methanogens into hyperalkaline serpentinizing environments through adaptations to minimize oxidant limitation

Fig. 2

Enzymes that differed between the two MAGs are denoted in the figures. Eha Group 4d energy-converting [NiFe]-hydrogenase A, Ehb Group 4d energy-converting [NiFe]-hydrogenase B, Fd ferredoxin, Fdh formate dehydrogenase, Frh coenzyme F420-reducing (Group 3a) [NiFe]-hydrogenase, Hdr heterodisulfide reductase, MFR methanofuran, MPT methanopterin, Mrp-Mbh multiple resistance and pH adaptation module—membrane bound (Group 4) [NiFe]-hydrogenase protein complex, Mvh methyl viologen-reducing (Group 3c) [NiFe]-hydrogenase. Figure adapted from Boyd et al. [1].

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