Fig. 4

Metabolic reconstruction of the alphaproteobacterial population genomes MC1, HYP1 and USC1. Colours indicate the genome or combination of genomes (Venn diagram) in which the cycle or enzymes are found. Abbreviations: H₄F tetrahydrofolate pathway, H₄MPT tetrahydromethanopterin pathway, TCA tricarboxylic acid cycle, EMC ethylmalonyl-CoA pathway, EMP Embden–Meyerhof–Parnas pathway (glycolysis), CBB Calvin–Benson–Bassham cycle, PHB polyhydroxybutyrate pathway, LPS lipopolysaccharide, CODH carbon monoxide dehydrogenase, NiFe nickel iron hydrogenase, nitrogenase (NifHDK), pMMO particulate methane monooxygenase, pMMO2 particulate methane monooxygenase isozyme II, sMMO soluble methane monooxygenase, pXMO homologue of particulate methane monooxgyenase, CH₃OH methanol, I complex I NADH dehydrogenase, II complex II succinate dehydrogenase, III complex III cytochrome bc1, IV cytochrome c oxidase, IV cbb3 complex IV cytochrome cbb3 oxidase, cyd complex IV cytochrome bd oxidase, FDH formate dehydrogenase, EHR energy converting hydrogenase related (part of formate hydrogenlyase complex), SO₄²⁻ sulphate, MoO₄²⁻ molybdate, Zn zinc, PO₄³⁻ phosphate, CHOH formaldehyde, sulphate adenylyltransferase (SatAB), APS adenosine 5'-phosphosulphate, SO₃²⁻ sulphite, adenylylsulphate reductase (AprAB), dissimilatory sulphite reductase (DsrAB), H₂S hydrogen sulphide, dissimilatory sulphite reductase electron transport complex (DsrK representing the DsrKMJOP complex), SoxYZ/SoxAX/SoxB/SoxCD = sulphur oxidising proteins. See Supplementary Fig. 7 for detailed gene presence/absence and Supplementary Table 3 for the list of additional abbreviations