3V5I

The crystal structure of the mutant ClpP S98A (Staphylococcus aureus)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.216 
  • R-Value Observed: 0.217 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Insights into structural network responsible for oligomerization and activity of bacterial virulence regulator caseinolytic protease P (ClpP) protein.

Gersch, M.List, A.Groll, M.Sieber, S.A.

(2012) J Biol Chem 287: 9484-9494

  • DOI: 10.1074/jbc.M111.336222
  • Primary Citation of Related Structures:  
    3V5E, 3V5I

  • PubMed Abstract: 
  • The barrel-shaped caseinolytic protease P (ClpP) is a main virulence regulator in the bacterial pathogen Staphylococcus aureus (SaClpP). It consists of two heptameric rings forming a homotetradecamer with an inner chamber that houses the 14 active sites. We recently showed that SaClpP is able to adopt a compressed, inactive conformation ...

    The barrel-shaped caseinolytic protease P (ClpP) is a main virulence regulator in the bacterial pathogen Staphylococcus aureus (SaClpP). It consists of two heptameric rings forming a homotetradecamer with an inner chamber that houses the 14 active sites. We recently showed that SaClpP is able to adopt a compressed, inactive conformation. We present here the 2.3 Å resolution structure of SaClpP in its closed, active conformation as well as the structure of the S98A mutant. Comprehensive mutational analysis aiming at destabilizing one or the other or both conformations was able to pinpoint key residues involved in this catalytic switch and in the heptamer-heptamer interaction. By probing the active site serine with a covalently modifying β-lactone probe, we could show that the tetradecameric organization is essential for a proper formation of the active site. Structural data suggest that a highly conserved hydrogen-bonding network links oligomerization to activity. A comparison of ClpP structures from different organisms provides suggestive evidence for the presence of a universal mechanism regulating ClpP activity in which binding of one subunit to the corresponding subunit on the other ring interface is necessary for the functional assembly of the catalytic triad and thus for protease function. This mechanism ensures controlled access to the active sites of a highly unspecific protease.


    Organizational Affiliation

    Center for Integrated Protein Science Munich, Technische Universität München, Department of Chemistry, Garching, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ATP-dependent Clp protease proteolytic subunit
A, B, C, D, E, F, G, H
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z, AA [auth a], BA [auth b]
203Staphylococcus aureus subsp. aureus NCTC 8325Mutation(s): 1 
Gene Names: clpPSAOUHSC_00790
EC: 3.4.21.92
Find proteins for Q2G036 (Staphylococcus aureus (strain NCTC 8325 / PS 47))
Explore Q2G036 
Go to UniProtKB:  Q2G036
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.216 
  • R-Value Observed: 0.217 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 97.55α = 73.1
b = 109.73β = 78.68
c = 171.41γ = 71.46
Software Package:
Software NamePurpose
RemDAqdata collection
REFMACrefinement
XDSdata reduction
XSCALEdata scaling
REFMACphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-02-08
    Type: Initial release
  • Version 1.1: 2012-07-11
    Changes: Database references
  • Version 1.2: 2017-11-08
    Changes: Refinement description