FIGURE A1.

Alignment of the sequences of Escherichia coli FNR (UniProtKB:P0A9E5) and the homolog found in the genome of Ideonella dechloratans (img: 2510552075). Regions of the E. coli sequence that have been found to have special functions are indicated as: *, for the cysteine residues involved in the formation of the iron–sulfur cluster; “AR1‐3,” for activating regions 1–3 that interact with RNAP and “DNA” for residues involved in binding to the FNR recognition sequence. Residues shown to be important for activation of class II promoters are indicated by ^