3CS0

Crystal structure of DegP24


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.212 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural basis for the regulated protease and chaperone function of DegP

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

(2008) Nature 453: 885-890

  • DOI: 10.1038/nature07004
  • Primary Citation of Related Structures:  2ZLE
  • Also Cited By: 3OU0, 4A8D

  • 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
448Escherichia coli (strain K12)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
pentapeptide
B
5N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
UNK
Query on UNK
B
L-PEPTIDE LINKINGC4 H9 N O2

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MSE
Query on MSE
A
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.212 
  • Space Group: F 4 3 2
Unit Cell:
Length (Å)Angle (°)
a = 253.929α = 90.00
b = 253.929β = 90.00
c = 253.929γ = 90.00
Software Package:
Software NamePurpose
XSCALEdata scaling
XDSdata reduction
DNAdata collection
CNSrefinement
SHARPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-05-27
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance