FIGURE 4.

Highlights of metabolic potential found in the three enriched microorganisms after ~2.5 years of bioreactor operation. MAG name and taxonomy are indicated below each cartoon. Red arrows indicate the protein was not clearly identified or subunits are missing. SDH, succinate dehydrogenase. Ack, acetate kinase; ACS, acetyl‐CoA synthetase; Cyc2, iron oxidase; NADH DH, NADH dehydrogenase; Nap, periplasmic nitrate reductase; Nar, nitrate reductase; Nir, nitric oxide‐forming nitrite reductase; Nor, nitric oxide reductase; Nos, nitrous oxide reductase; Nrf, ammonia‐forming nitrite reductase; OmcS, outer membrane c‐type cytochrome; PFOR, pyruvate:ferredoxin oxidoreductase; Pta, phosphotransacetylase; Q, quinone; TCA, tricarboxylic acid cycle