2ZLE

Cryo-EM structure of DegP12/OMP

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 28 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history. 

Literature

Structural basis for the regulated protease and chaperone function of DegP

Krojer, T., Sawa, J., Saibil, H.R., Ehrmann, M., Clausen, T.

(2008) Nature 453: 885-890

  • DOI: 10.1038/nature07004
  • Primary Citation of Related Structures:  
  • Also Cited By: 4A8D, 3OU0

  • PubMed Abstract: 

    • All organisms have to monitor the folding state of cellular proteins precisely. The heat-shock protein DegP is a protein quality control factor in the bacterial envelope that is involved in eliminating misfolded proteins and in the biogenesis of oute ...

    All organisms have to monitor the folding state of cellular proteins precisely. The heat-shock protein DegP is a protein quality control factor in the bacterial envelope that is involved in eliminating misfolded proteins and in the biogenesis of outer-membrane proteins. Here we describe the molecular mechanisms underlying the regulated protease and chaperone function of DegP from Escherichia coli. We show that binding of misfolded proteins transforms hexameric DegP into large, catalytically active 12-meric and 24-meric multimers. A structural analysis of these particles revealed that DegP represents a protein packaging device whose central compartment is adaptable to the size and concentration of substrate. Moreover, the inner cavity serves antagonistic functions. Whereas the encapsulation of folded protomers of outer-membrane proteins is protective and might allow safe transit through the periplasm, misfolded proteins are eliminated in the molecular reaction chamber. Oligomer reassembly and concomitant activation on substrate binding may also be critical in regulating other HtrA proteases implicated in protein-folding diseases.

    Organizational Affiliation: 

    Research Institute for Molecular Pathology - IMP, Dr Bohrgasse 7, A-1030 Vienna, Austria.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Protease do
A, B, C, E, F, G, H, I, J, K, L, M
448Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: degP (htrA, ptd)
EC: 3.4.21.107
Find proteins for P0C0V0 (Escherichia coli (strain K12))
Go to UniProtKB:  P0C0V0
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Outer membrane protein C
D
346Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: ompC (meoA, par)
Find proteins for P06996 (Escherichia coli (strain K12))
Go to UniProtKB:  P06996
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 28 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-06-03
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-02-08
    Type: Other