Cluster 2 genes.

1Regulation of genes known to be induced by an increase in osmolarity: (a) genes described in [53], (b) genes described in [52], (c) gene belongs to an operon known to be regulated by osmotic stress; genes known to respond to acid stress: (d) EvgA overexpression, (e) YdeO overexpression, (f) GadX overexpression, (g) gadX mutant [56], (h) genes responding to acid stress independently of GadX and genes controlled by FNR: (FR) FNR-repressed and (FA) FNR-activated [63].