1YG6

ClpP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.221 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The asymmetry in the mature amino-terminus of ClpP facilitates a local symmetry match in ClpAP and ClpXP complexes.

Bewley, M.C.Graziano, V.Griffin, K.Flanagan, J.M.

(2006) J.Struct.Biol. 153: 113-128

  • DOI: 10.1016/j.jsb.2005.09.011
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • ClpP is a self-compartmentalized proteolytic assembly comprised of two, stacked, heptameric rings that, when associated with its cognate hexameric ATPase (ClpA or ClpX), form the ClpAP and ClpXP ATP-dependent protease, respectively. The symmetry mism ...

    ClpP is a self-compartmentalized proteolytic assembly comprised of two, stacked, heptameric rings that, when associated with its cognate hexameric ATPase (ClpA or ClpX), form the ClpAP and ClpXP ATP-dependent protease, respectively. The symmetry mismatch is an absolute feature of this large energy-dependent protease and also of the proteasome, which shares a similar barrel-shaped architecture, but how it is accommodated within the complex has yet to be understood, despite recent structural investigations, due in part to the conformational lability of the N-termini. We present the structures of Escherichia coli ClpP to 1.9A and an inactive variant that provide some clues for how this might be achieved. In the wild type protein, the highly conserved N-terminal 20 residues can be grouped into two major structural classes. In the first, a loop formed by residues 10-15 protrudes out of the central access channel extending approximately 12-15A from the surface of the oligomer resulting in the closing of the access channel observed in one ring. Similar loops are implied to be exclusively observed in human ClpP and a variant of ClpP from Streptococcus pneumoniae. In the other ring, a second class of loop is visible in the structure of wt ClpP from E. coli that forms closer to residue 16 and faces toward the interior of the molecule creating an open conformation of the access channel. In both classes, residues 18-20 provide a conserved interaction surface. In the inactive variant, a third class of N-terminal conformation is observed, which arises from a conformational change in the position of F17. We have performed a detailed functional analysis on each of the first 20 amino acid residues of ClpP. Residues that extend beyond the plane of the molecule (10-15) have a lesser effect on ATPase interaction than those lining the pore (1-7 and 16-20). Based upon our structure-function analysis, we present a model to explain the widely disparate effects of individual residues on ClpP-ATPase complex formation and also a possible functional reason for this mismatch.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, The Milton S. Hershey Medical Center, Pennsylvania State University College of Medicine, P.O. Box 850, Hershey, PA 17033, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ATP-dependent Clp protease proteolytic subunit
A, B, C, D, E, F, G, H, I, J, K, L, M, N
193Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: clpP (lopP)
EC: 3.4.21.92
Find proteins for P0A6G7 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A6G7
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MPD
Query on MPD

Download SDF File 
Download CCD File 
A, B, C, D, E, F, G, H, I, J, K, L, M, N
(4S)-2-METHYL-2,4-PENTANEDIOL
C6 H14 O2
SVTBMSDMJJWYQN-YFKPBYRVSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.221 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 192.500α = 90.00
b = 103.300β = 98.40
c = 159.000γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
CNSphasing
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-04-04
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance