ROS-Mediated Signalling in Bacteria: Zinc-Containing Cys-X-X-Cys Redox Centres and Iron-Based Oxidative Stress

Figure 4

An image showing the arrangement of the internal EXXE motif between two subunits (red and turquoise chain, respectively) in the octameric HbpS (PDB: 3FPV). The amino acids Tyr77 (Y77), Glu78 (E78), Glu81 (E81), and Arg82 (R82) are indicated.