Figure 4From: The pyrroloquinoline quinone biosynthesis pathway revisited: A structural approachCrystal structure of PqqC. The two conformational states of PqqC (open: PDB ID 1otv; closed: PDB ID 1otw) shown in ribbon representation (grey). The moving parts are depicted as colored ribbons: open (orange) and closed (red) conformation. PQQ (orange) and putative hydrogenperoxide (red) are shown in sticks.Back to article page