2C8T

The 3.0 A Resolution Structure of Caseinolytic Clp Protease 1 from Mycobacterium tuberculosis


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.214 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Insights Into the Inter-Ring Plasticity of Caseinolytic Proteases from the X-Ray Structure of Mycobacterium Tuberculosis Clpp1.

Ingvarsson, H.Mate, M.J.Hogbom, M.Portnoi, D.Benaroudj, N.Alzari, P.M.Ortiz-Lombardia, M.Unge, T.

(2007) Acta Crystallogr D Biol Crystallogr 63: 249

  • DOI: 10.1107/S0907444906050530
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Mycobacterium tuberculosis caseinolytic protease ClpP1 (Mt ClpP1) is a self-compartmentalized protease consisting of two heptameric rings stacked on top of each other, thus enclosing a catalytic chamber. Within the chamber, which can be reached throu ...

    Mycobacterium tuberculosis caseinolytic protease ClpP1 (Mt ClpP1) is a self-compartmentalized protease consisting of two heptameric rings stacked on top of each other, thus enclosing a catalytic chamber. Within the chamber, which can be reached through two axial pores, each of the 14 identical monomers possesses a serine protease active site. The unfolding and translocation of substrates into the chamber are mediated by associated hexameric ATPases covering the axial pores. Three crystal structures of Mt ClpP1, determined by molecular replacement, are presented in this study. Two of the models were refined to a resolution of 2.6 A and the third to 3.0 A. It was found that disorder in the handle domain affects the formation and configuration of the tetradecamer and results in condensed structures with larger equatorial pores when compared with ClpPs from other species. Additionally, this disorder accompanies conformational changes of the residues in the catalytic triad. The models also reveal structural differences within the N-terminal hairpin-loop domain, which possibly reflect the significant differences in amino-acid sequence between Mt ClpP1 and other ClpP homologues in this region.


    Organizational Affiliation

    Department of Cell and Molecular Biology, Uppsala University, Biomedical Center, Box 596, SE-751 24 Uppsala, Sweden.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ATP-DEPENDENT CLP PROTEASE PROTEOLYTIC SUBUNIT 1A, B, C, D, E, F, G, H, I, J, K, L, M, N206Mycobacterium tuberculosis H37RvMutation(s): 0 
Gene Names: clpP1clpPRv2461cMTV008.17c
EC: 3.4.21.92
Find proteins for P9WPC5 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Explore P9WPC5 
Go to UniProtKB:  P9WPC5
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.214 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 96.719α = 90
b = 168.218β = 114.6
c = 103.761γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
MOLREPphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-02-06
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Refinement description, Version format compliance