FIG 2.

Reconstructed metabolic pathway of “Ca. Aenigmarchaeota.” Key genes involved in glycolysis, gluconeogenesis, pentose phosphate pathway, pyruvate metabolism, fermentation, AMP metabolism, protein biosynthesis and exportation, transporters, and flagellum are shown. Solid circles indicate that certain genes are present in more than or equal to 50% of the genomes, while hollow circles are genes presented in less than 50% of the genomes. Abbreviations: TCA, tricarboxylic acid; ETC, electron transport chain; PRPP, phosphoribosyl pyrophosphate.