Genomic Analysis Unravels Reduced Inorganic Sulfur Compound Oxidation of Heterotrophic Acidophilic Acidicaldus sp. Strain DX-1

Figure 3

Genome-based model of RISC oxidation in Acidicaldus sp. strain DX-1. The figure was adapted from previous sulfur oxidation models [23, 38]. RISC oxidation involves various enzymes and a number of electron carriers. The solid lines denote the oxidation of RISC catalyzed by various enzymes, and the dashed lines denote the direction of electron transfer. SQR, sulfide quinone reductase; TQO, thiosulfate quinone oxidoreductase; TST, rhodanese; HdrABC, heterodisulfide reductase complex; SAT, sulfate adenylyltransferase; bd, terminal oxidase bd; bc₁, terminal oxidase bc₁ complex; NADH, NADH complex I; aa₃, cytochrome oxidase aa₃-type; QH₂, quinol pool; and CycA, cytochrome c.