Operons associated with a FNR ChIP-seq peak and lacking a FNR-dependent change in expression in GMM but are activated by FNR in the presence of NO3−, NO2−, NarL or NarP (Category 3) according to Constantinidou et al.[19].

aGenomic location within each FNR ChIP-seq peak with the highest read count (the summit of the peak).bFirst gene of the operon downstream of the FNR ChIP-seq peak, and operon designation was obtained from EcoCyc [70].cIdentification number (B-number) for the first gene in each operon, obtained from EcoCyc [70].dFunctional description of the products of the operons, obtained from EcoCyc [70].eGrowth conditions (presence of NO3−, NO2−, NarL or NarP) in which FNR activated the operon, according to [19].