6EM8

S.aureus ClpC resting state, C2 symmetrised


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.40 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

Regulatory coiled-coil domains promote head-to-head assemblies of AAA+ chaperones essential for tunable activity control.

Carroni, M.Franke, K.B.Maurer, M.Jager, J.Hantke, I.Gloge, F.Linder, D.Gremer, S.Turgay, K.Bukau, B.Mogk, A.

(2017) Elife 6

  • DOI: 10.7554/eLife.30120
  • Primary Citation of Related Structures:  
    6EM9, 6EM8, 6EMW

  • PubMed Abstract: 
  • Ring-forming AAA+ chaperones exert ATP-fueled substrate unfolding by threading through a central pore. This activity is potentially harmful requiring mechanisms for tight repression and substrate-specific activation. The AAA+ chaperone ClpC with the ...

    Ring-forming AAA+ chaperones exert ATP-fueled substrate unfolding by threading through a central pore. This activity is potentially harmful requiring mechanisms for tight repression and substrate-specific activation. The AAA+ chaperone ClpC with the peptidase ClpP forms a bacterial protease essential to virulence and stress resistance. The adaptor MecA activates ClpC by targeting substrates and stimulating ClpC ATPase activity. We show how ClpC is repressed in its ground state by determining ClpC cryo-EM structures with and without MecA. ClpC forms large two-helical assemblies that associate via head-to-head contacts between coiled-coil middle domains (MDs). MecA converts this resting state to an active planar ring structure by binding to MD interaction sites. Loss of ClpC repression in MD mutants causes constitutive activation and severe cellular toxicity. These findings unravel an unexpected regulatory concept executed by coiled-coil MDs to tightly control AAA+ chaperone activity.


    Organizational Affiliation

    DKFZ-ZMBH Alliance, Center for Molecular Biology of the University of Heidelberg (ZMBH) and German Cancer Research Center (DKFZ), Heidelberg, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ATP-dependent Clp protease ATP-binding subunit ClpCABCDEFGHIL818Staphylococcus aureusMutation(s): 0 
Gene Names: clpCBER48_000499CEJ93_12415ERS072738_00457ERS072840_00763ERS073583_01020ERS074020_00452HMPREF3211_01370
Find proteins for Q2G0P5 (Staphylococcus aureus (strain NCTC 8325 / PS 47))
Explore Q2G0P5 
Go to UniProtKB:  Q2G0P5
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data

  • Deposited Date: 2017-10-01 
  • Released Date: 2017-12-27 
  • Deposition Author(s): Carroni, M., Mogk, A.

Funding OrganizationLocationGrant Number
Germany--

Revision History 

  • Version 1.0: 2017-12-27
    Type: Initial release
  • Version 1.1: 2018-10-24
    Changes: Advisory, Data collection, Derived calculations
  • Version 1.2: 2019-12-11
    Changes: Other