2V9H

Solution Structure of an Escherichia coli YaeT tandem POTRA domain


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 450 
  • Conformers Submitted: 20 
  • Selection Criteria: LEAST RESTRAINT VIOLATIONS 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Fold and Function of Polypeptide Transport-Associated Domains Responsible for Delivering Unfolded Proteins to Membranes.

Knowles, T.J.Jeeves, M.Bobat, S.Dancea, F.Mcclelland, D.M.Palmer, T.Overduin, M.Henderson, I.R.

(2008) Mol.Microbiol. 68: 1216

  • DOI: 10.1111/j.1365-2958.2008.06225.x

  • PubMed Abstract: 
  • Membranes of Gram-negative bacteria, mitochondria and chloroplasts receive and fold beta-barrel transmembrane proteins through the action of polypeptide transport-associated (POTRA) domains. In Escherichia coli, folding substrates are inserted into t ...

    Membranes of Gram-negative bacteria, mitochondria and chloroplasts receive and fold beta-barrel transmembrane proteins through the action of polypeptide transport-associated (POTRA) domains. In Escherichia coli, folding substrates are inserted into the outer membrane by the essential protein YaeT, a prototypic Omp85 protein. Here, the articulation between tandem POTRA domains in solution is defined by nuclear magnetic resonance (NMR) spectroscopy, indicating an unprecedented juxtaposition. The novel solution orientations of all five POTRA domains are revealed by small-angle X-ray scattering of the entire 46 kDa periplasmic region. NMR titration studies show that strands from YaeT's canonical folding substrate, PhoE, bind non-specifically along alternating sides of its mixed beta sheets, thus providing an ideal platform for helping to fold nascent outer-membrane proteins. Together, this provides the first structural model of how multiple POTRA domains recruit substrates from the periplasmic solution into the outer membrane.


    Organizational Affiliation

    Cancer Research UK Institute for Cancer Studies, School of Medicine, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
OUTER MEMBRANE PROTEIN ASSEMBLY FACTOR YAET
A
164Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: bamA (yaeT, yzzN, yzzY)
Membrane protein
mpstruc
Group: 
TRANSMEMBRANE PROTEINS: BETA-BARREL
Sub Group: 
Omp85-TpsB Outer Membrane Transporter Superfamily
Protein: 
BamA21-351 POTRA domains (periplasmic fragment, P212121)
Find proteins for P0A940 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A940
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 450 
  • Conformers Submitted: 20 
  • Selection Criteria: LEAST RESTRAINT VIOLATIONS 
  • Olderado: 2V9H Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-05-06
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance