2K0R

Solution structure of the C103S mutant of the N-terminal Domain of DsbD from Neisseria meningitidis

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 1500 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

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Literature

Solution structure and backbone dynamics of the cysteine 103 to serine mutant of the N-terminal domain of DsbD from Neisseria meningitidis.

Quinternet, M., Tsan, P., Selme, L., Beaufils, C., Jacob, C., Boschi-Muller, S., Averlant-Petit, M.C., Branlant, G., Cung, M.T.

(2008) Biochemistry 47: 12710-12720

  • DOI: 10.1021/bi801343c

  • PubMed Abstract: 

    • The DsbD protein is essential for electron transfer from the cytoplasm to the periplasm of Gram-negative bacteria. Its N-terminal domain dispatches electrons coming from cytoplasmic thioredoxin (Trx), via its central transmembrane and C-terminal doma ...

    The DsbD protein is essential for electron transfer from the cytoplasm to the periplasm of Gram-negative bacteria. Its N-terminal domain dispatches electrons coming from cytoplasmic thioredoxin (Trx), via its central transmembrane and C-terminal domains, to its periplasmic partners: DsbC, DsbE/CcmG, and DsbG. Previous structural studies described the latter proteins as Trx-like folds possessing a characteristic C-X-X-C motif able to generate a disulfide bond upon oxidation. The Escherichia coli nDsbD displays an immunoglobulin-like fold in which two cysteine residues (Cys103 and Cys109) allow a disulfide bond exchange with its biological partners.We have determined the structure in solution and the backbone dynamics of the C103S mutant of the N-terminal domain of DsbD from Neisseria meningitidis. Our results highlight significant structural changes concerning the beta-sheets and the local topology of the active site compared with the oxidized form of the E. coli nDsbD. The structure reveals a "cap loop" covering the active site, similar to the oxidized E. coli nDsbD X-ray structure. However, regions featuring enhanced mobility were observed both near to and distant from the active site, revealing a capacity of structural adjustments in the active site and in putative interaction areas with nDsbD biological partners. Results are discussed in terms of functional consequences.

    Organizational Affiliation: 

    Laboratoire de Chimie Physique Macromoleculaire, UMR 7568 CNRS-INPL, Nancy Universite, 1 rue Grandville, B.P. 20451, 54001 Nancy cedex, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Thiol:disulfide interchange protein dsbD
A
128Neisseria meningitidis serogroup B (strain MC58)Mutation(s): 2 
Gene Names: dsbD
EC: 1.8.1.8
Find proteins for Q9JYM0 (Neisseria meningitidis serogroup B (strain MC58))
Go to UniProtKB:  Q9JYM0
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 1500 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 
  • Olderado: 2K0R Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-11-11
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance