Protein-disulfide reductase DsbD; Required to facilitate the formation of correct disulfide bonds in some periplasmic proteins and for the assembly of the periplasmic c-type cytochromes. Acts by transferring electrons from cytoplasmic thioredoxin to the periplasm. This transfer involves a cascade of disulfide bond formation and reduction steps. Belongs to the thioredoxin family. DsbD subfamily.

Thiol:disulfide interchange protein DsbA family.

Serine/threonine protein kinase RdoA; A protein kinase that phosphorylates Ser and Thr residues. Probably acts to suppress the effects of stress linked to accumulation of reactive oxygen species. Probably involved in the extracytoplasmic stress response.

Thiol:disulfide interchange protein DsbC; Required for disulfide bond formation in some periplasmic proteins. Acts by transferring its disulfide bond to other proteins and is reduced in the process; Belongs to the thioredoxin family. DsbC subfamily.

Disulfide bond formation protein DsbB family; Required for disulfide bond formation in some proteins. Part of a redox system composed of DsbI and DsbL that mediates formation of an essential disulfide bond in AssT (By similarity).

Cytochrome c synthetase subunit CcmH; Possible subunit of a heme lyase.

Beta barrel protein translocation component BamE; Part of the outer membrane protein assembly complex, which is involved in assembly and insertion of beta-barrel proteins into the outer membrane.

Outer membrane protein maturation factor peptidyl-prolyl cis-trans isomerase SurA; Chaperone involved in the correct folding and assembly of outer membrane proteins. Recognizes specific patterns of aromatic residues and the orientation of their side chains, which are found more frequently in integral outer membrane proteins. May act in both early periplasmic and late outer membrane-associated steps of protein maturation.

Lipopolysaccharide export porin LptD; Together with LptE, is involved in the assembly of lipopolysaccharide (LPS) at the surface of the outer membrane.