1KDL

Solution structure of the amphipathic domain of YopD from Yersinia


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 150 
  • Conformers Submitted: 
  • Selection Criteria: structures with acceptable covalent geometry, structures with the least restraint violations, structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Conformational analysis by CD and NMR spectroscopy of a peptide encompassing the amphipathic domain of YopD from Yersinia.

Tengel, T.Sethson, I.Francis, M.S.

(2002) Eur.J.Biochem. 269: 3659-3668


  • PubMed Abstract: 
  • To establish an infection, Yersinia pseudotuberculosis utilizes a plasmid-encoded type III secretion machine that permits the translocation of several anti-host factors into the cytosol of target eukaryotic cells. Secreted YopD is essential for this ...

    To establish an infection, Yersinia pseudotuberculosis utilizes a plasmid-encoded type III secretion machine that permits the translocation of several anti-host factors into the cytosol of target eukaryotic cells. Secreted YopD is essential for this process. Pre-secretory stabilization of YopD is mediated by an interaction with its cognate chaperone, LcrH. YopD possesses LcrH binding domains located in the N-terminus and in a predicted amphipathic domain located near the C-terminus. This latter domain is also critical for Yersinia virulence. In this study, we designed synthetic peptides encompassing the C-terminal amphipathic domain of YopD. A solution structure of YopD278-300, a peptide that strongly interacted with LcrH, was obtained by NMR methods. The structure is composed of a well-defined amphipathic alpha helix ranging from Phe280 to Tyr291, followed by a type I beta turn between residues Val292 and His295. The C-terminal truncated peptides, YopD278-292 and YopD271-292, lacked helical structure, implicating the beta turn in helix stability. An interaction between YopD278-300 and its cognate chaperone, LcrH, was observed by NMR through line-broadening effects and chemical shift differences between the free peptide and the peptide-LcrH complex. These effects were not observed for the unstructured peptide, YopD278-292, which confirms that the alpha helical structure of the YopD amphipathic domain is a critical binding region of LcrH.


    Organizational Affiliation

    Department of Organic Chemistry, Umeå University, Umeå, Sweden.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
YOPD protein
A
23Yersinia pseudotuberculosis serotype I (strain IP32953)Mutation(s): 0 
Gene Names: yopD
Find proteins for Q06131 (Yersinia pseudotuberculosis serotype I (strain IP32953))
Go to UniProtKB:  Q06131
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 150 
  • Conformers Submitted: 
  • Selection Criteria: structures with acceptable covalent geometry, structures with the least restraint violations, structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-08-21
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-11-29
    Type: Derived calculations