Disulfide bond isomerase protein N-terminal domain
This is the N-terminal domain of the disulfide bond isomerase DsbC. The whole molecule is V-shaped, where each arm is a DsbC monomer of two domains linked by a hinge; and the N-termini of each monomer join to form the dimer interface at the base of t ...
This is the N-terminal domain of the disulfide bond isomerase DsbC. The whole molecule is V-shaped, where each arm is a DsbC monomer of two domains linked by a hinge; and the N-termini of each monomer join to form the dimer interface at the base of the V, so are vital for dimerisation [1]. DsbC is required for disulfide bond formation and functions as a disulfide bond isomerase during oxidative protein-folding in bacterial periplasm. It also has chaperone activity [2].
This entry represents the thioredoxin domain, which is found in proteins from all the kingdoms of living organisms. It functions as a general protein disulphide oxidoreductase. It contains a cis-proline located in a loop preceding beta-strand 4, whic ...
This entry represents the thioredoxin domain, which is found in proteins from all the kingdoms of living organisms. It functions as a general protein disulphide oxidoreductase. It contains a cis-proline located in a loop preceding beta-strand 4, which makes contact with the active site cysteines, and is important for stability and function. It shows a beta-sheet sandwiched between alpha-helices [11-12].
The disulphide bond isomerase DsbC from E. coli is able to break up incorrectly formed disulphide bonds by transferring electrons to reduce the bond. It displays homology to the thioredoxase family of enzymes.
Defined by 4 residues: ASP:A-95CYS:A-98CYS:A-101ARG:A-125
