Arrow width corresponds to abundance of MAGs with that gene and dots show which CFP pathways were present in the MAGs that had that gene, with blue for WL, yellow for rTCA, and pink for CBB. Class names are listed from most to least abundant (top to bottom), and MAGs in the top 3 CFP-containing classes are in bold. Pink dashed box highlights sulfur-associated chemoautotrophic nitrogen reduction. Blue dashed box highlights hydrogenotrophic sulfur reduction. Gray dotted line with a question mark represents missing aprBA predictions for all sulfide-oxidizing MAGs.