Figure 5

Rnf is found in many prokaryotes that form propionate, succinate, and acetate during fermentation. (A) Alluvial graph showing percentage of prokaryotes with Rnf genes. Rnf genes are enriched in organisms that are fermentative and form propionate, succinate, and acetate. (B) Phylogenetic tree of prokaryotes, highlighting those with Rnf genes and that form propionate, succinate, and acetate during fermentation. (C) Habitats of prokaryotes with Rnf genes and observed to form propionate, succinate, and acetate during fermentation. Abbreviations: Ac, acetate; Suc, succinate; Pr, propionate. See Supplementary Tables S9 and S10 for more information.