FIGURE 2.

Model of sulfur metabolism and related pathways in T. dismutans. Enzyme abbreviations: Ttr, tetrathionate reductase; Tsr, thiosulfate reductase; Qmo/Hdr, electron transfer complex Qmo and heterodisulfide reductase; Dsr, dissimilatory sulfite reductase; Apr, adenosine-5′-phosphosulfate reductase; Sat, sulfate adenylyltransferase; PPase, pyrophosphatase; Fdh, formate dehydrogenase; Hyd, hydrogenase; Nap, nitrate reductase; Nrf, putative nitrite reductase; OR, oxidoreductase encoded by genes TDIS_0606-TDIS_0609; Otr, octaheme c-type cytochrome tetrathionate reductase; ATP, F₁F₀ ATP synthase; Nuo, membrane-linked complex comprising subunits NuoA, B, C, D, H, I, J, K, L, M and N of NADH-ubiquinone oxidoreductase. OM, outer membrane; CM, cytoplasmic membrane.