Fig 3. Protein function classify of bacterial major metabolisms and archaea methane metabolism in different stages of the CHMP-AF.

(A) Bar graph showing the proportion of identified bacterial proteins involved into the carbohydrate, energy, lipid, amino acid, and other metabolisms. (B) Bar graph showing the proportion of identified archaea proteins involved into the methane metabolism by acetic acid pathway, carbon dioxide pathway, methyl nutrient pathway and methyl-coenzyme M reductase, respectively.