Structural highlights
Function
[MSRAB_NEIMA] Has an important function as a repair enzyme for proteins that have been inactivated by oxidation (By similarity). Catalyzes the reversible oxidation-reduction of methionine sulfoxide in proteins to methionine. [DSBD_NEIMB] 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 (By similarity).
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
DsbD transmembrane protein dispatches electrons to periplasmic Trx/DsbE-like partners via specific interactions with its N-terminal domain, nDsbD. In the present study, PilB N-terminal domain (NterPilB) is shown to efficiently accept electrons coming from nDsbD from Neisseria meningitidis. Using an NMR-driven docking approach, we have modeled the structure of a mixed disulfide complex between NterPilB and nDsbD. We show the needed opening of nDsbD cap-loop whereas NterPilB FLHE loop does not seem essential in the formation and stabilization of the complex. Relaxation analysis performed on backbone amide groups highlights a kind of dynamics transfer from nDsbD cap-loop on NterPilB alpha1 helix, suggesting that a mobility contribution is required not only for the formation of the mixed disulfide complex, but also for its disruption. Taking into account previous X-ray data on covalent complexes involving nDsbD, a cartoon of interactions between Trx-like partners and nDsbD is proposed that illustrates the adaptability of nDsbD.
Formation of the complex between DsbD and PilB N-terminal domains from Neisseria meningitidis necessitates an adaptability of nDsbD.,Quinternet M, Tsan P, Selme-Roussel L, Jacob C, Boschi-Muller S, Branlant G, Cung MT Structure. 2009 Jul 15;17(7):1024-33. PMID:19604482[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Quinternet M, Tsan P, Selme-Roussel L, Jacob C, Boschi-Muller S, Branlant G, Cung MT. Formation of the complex between DsbD and PilB N-terminal domains from Neisseria meningitidis necessitates an adaptability of nDsbD. Structure. 2009 Jul 15;17(7):1024-33. PMID:19604482 doi:10.1016/j.str.2009.05.011
