Figure 2.

Genes involved in dissimilatory sulfur oxidation in S. novella. (A) Schematic representation of the two sox gene clusters encoded in the S. novella genome. soxAX, red; soxYZ, dark gray; soxB, light blue; soxC, light gray; soxD, orange; soxF, yellow; accessory genes (e.g., soxV,W,S etc.), blue gray; soxR, dark blue gray; orf1 membrane anchor protein (main sox cluster) and Xanthine Oxidase family Mo enzyme (second sox cluster), no fill. (B) Expression of sox genes in S. novella cultures grown in the presence of glucose, methanol, or thiosulfate/CO₂. Error bars represent the Standard Deviation of the mean, gene expression was normalized relative to the expression of the 16S RNA gene. A number “2” added to the gene name denotes that this gene is present in the second sox gene cluster.