2Y1Q

Crystal Structure of ClpC N-terminal Domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.170 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure and Mechanism of the Hexameric Meca-Clpc Molecular Machine.

Mei, Z.Qi, Y.Yan, C.Hu, Q.Wang, J.Shi, Y.Wang, F.

(2011) Nature 471: 331

  • DOI: 10.1038/nature09780
  • Primary Citation of Related Structures:  2Y1R, 3PXG, 3PXI

  • PubMed Abstract: 
  • Regulated proteolysis by ATP-dependent proteases is universal in all living cells. Bacterial ClpC, a member of the Clp/Hsp100 family of AAA+ proteins (ATPases associated with diverse cellular activities) with two nucleotide-binding domains (D1 and D2 ...

    Regulated proteolysis by ATP-dependent proteases is universal in all living cells. Bacterial ClpC, a member of the Clp/Hsp100 family of AAA+ proteins (ATPases associated with diverse cellular activities) with two nucleotide-binding domains (D1 and D2), requires the adaptor protein MecA for activation and substrate targeting. The activated, hexameric MecA-ClpC molecular machine harnesses the energy of ATP binding and hydrolysis to unfold specific substrate proteins and translocate the unfolded polypeptide to the ClpP protease for degradation. Here we report three related crystal structures: a heterodimer between MecA and the amino domain of ClpC, a heterododecamer between MecA and D2-deleted ClpC, and a hexameric complex between MecA and full-length ClpC. In conjunction with biochemical analyses, these structures reveal the organizational principles behind the hexameric MecA-ClpC complex, explain the molecular mechanisms for MecA-mediated ClpC activation and provide mechanistic insights into the function of the MecA-ClpC molecular machine. These findings have implications for related Clp/Hsp100 molecular machines.


    Organizational Affiliation

    Center for Structural Biology, School of Life Sciences and School of Medicine, Tsinghua University, Beijing 100084, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
NEGATIVE REGULATOR OF GENETIC COMPETENCE CLPC/MECB
A
150Bacillus subtilis (strain 168)Gene Names: clpC (mecB)
Find proteins for P37571 (Bacillus subtilis (strain 168))
Go to UniProtKB:  P37571
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.170 
  • Space Group: P 65
Unit Cell:
Length (Å)Angle (°)
a = 84.916α = 90.00
b = 84.916β = 90.00
c = 31.633γ = 120.00
Software Package:
Software NamePurpose
PHENIXrefinement
BRUKERdata scaling
HKL2MAPphasing
BRUKERdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-03-16
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance