3O2O

Structure of E. coli ClpS ring complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.173 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Re-refinement Note

This entry reflects an alternative modeling of the original data in: 

  • 2WA9 - determined by Schuenemann, V.J., Kralik, S.M., Albrecht, R., Spall, S.K., Truscott, K.N., Dougan, D.A., Zeth, K.  

Literature

The ClpS adaptor mediates staged delivery of N-end rule substrates to the AAA+ ClpAP protease.

Roman-Hernandez, G.Hou, J.Y.Grant, R.A.Sauer, R.T.Baker, T.A.

(2011) Mol.Cell 43: 217-228

  • DOI: 10.1016/j.molcel.2011.06.009
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The ClpS adaptor delivers N-end rule substrates to ClpAP, an energy-dependent AAA+ protease, for degradation. How ClpS binds specific N-end residues is known in atomic detail and clarified here, but the delivery mechanism is poorly understood. We sho ...

    The ClpS adaptor delivers N-end rule substrates to ClpAP, an energy-dependent AAA+ protease, for degradation. How ClpS binds specific N-end residues is known in atomic detail and clarified here, but the delivery mechanism is poorly understood. We show that substrate binding is enhanced when ClpS binds hexameric ClpA. Reciprocally, N-end rule substrates increase ClpS affinity for ClpA(6). Enhanced binding requires the N-end residue and a peptide bond of the substrate, as well as multiple aspects of ClpS, including a side chain that contacts the substrate α-amino group and the flexible N-terminal extension (NTE). Finally, enhancement also needs the N domain and AAA+ rings of ClpA, connected by a long linker. The NTE can be engaged by the ClpA translocation pore, but ClpS resists unfolding/degradation. We propose a staged-delivery model that illustrates how intimate contacts between the substrate, adaptor, and protease reprogram specificity and coordinate handoff from the adaptor to the protease.


    Related Citations: 
    • Structural basis of N-end rule substrate recognition in Escherichia coli by the ClpAP adaptor protein ClpS.
      Schuenemann, V.J.,Kralik, S.M.,Albrecht, R.,Spall, S.K.,Truscott, K.N.,Dougan, D.A.,Zeth, K.
      (2009) Embo Rep. 10: 508


    Organizational Affiliation

    Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ATP-dependent Clp protease adaptor protein ClpS
A, B, C, D, E, F, G, H
85Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: clpS (yljA)
Find proteins for P0A8Q6 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A8Q6
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.173 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 171.910α = 90.00
b = 155.870β = 114.64
c = 71.230γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
PDB_EXTRACTdata extraction
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-12-14
    Type: Initial release