1E94

HslV-HslU from E.coli


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.254 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Mutational Studies on Hslu and its Docking Mode with Hslv

Song, H.K.Hartmann, C.Ravishankar, R.Bochtler, M.Behrendt, R.Moroder, L.Huber, R.

(2000) Proc.Natl.Acad.Sci.USA 97: 14103

  • DOI: 10.1073/pnas.250491797

  • PubMed Abstract: 
  • HslVU is an ATP-dependent prokaryotic protease complex. Despite detailed crystal and molecular structure determinations of free HslV and HslU, the mechanism of ATP-dependent peptide and protein hydrolysis remained unclear, mainly because the producti ...

    HslVU is an ATP-dependent prokaryotic protease complex. Despite detailed crystal and molecular structure determinations of free HslV and HslU, the mechanism of ATP-dependent peptide and protein hydrolysis remained unclear, mainly because the productive complex of HslV and HslU could not be unambiguously identified from the crystal data. In the crystalline complex, the I domains of HslU interact with HslV. Observations based on electron microscopy data were interpreted in the light of the crystal structure to indicate an alternative mode of association with the intermediate domains away from HslV. By generation and analysis of two dozen HslU mutants, we find that the amidolytic and caseinolytic activities of HslVU are quite robust to mutations on both alternative docking surfaces on HslU. In contrast, HslVU activity against the maltose-binding protein-SulA fusion protein depends on the presence of the I domain and is also sensitive to mutations in the N-terminal and C-terminal domains of HslU. Mutational studies around the hexameric pore of HslU seem to show that it is involved in the recognition/translocation of maltose-binding protein-SulA but not of chromogenic small substrates and casein. ATP-binding site mutations, among other things, confirm the essential role of the "sensor arginine" (R393) and the "arginine finger" (R325) in the ATPase action of HslU and demonstrate an important role for E321. Additionally, we report a better refined structure of the HslVU complex crystallized along with resorufin-labeled casein.


    Related Citations: 
    • Hslv-Hslu: A Novel ATP-Dependent Protease Complex in Escherichia Coli Related to the Eukaryotic Proteasome
      Rohrwild, M.,Coux, O.,Huang, H.C.,Moerschell, R.P.,Yoo, S.J.,Seol, J.H.,Chung, C.H.,Goldberg, A.L.
      (1996) Proc.Natl.Acad.Sci.USA 93: 5808
    • Crystal Structure of Heat Shock Locus V (Hslv) from Escherichia Coli
      Bochtler, M.,Ditzel, L.,Groll, M.,Huber, R.
      (1997) Proc.Natl.Acad.Sci.USA 94: 6070
    • The Structures of Hslu and the ATP-Dependent Protease Hslu-Hslv
      Bochtler, M.,Hartmann, C.,Song, H.K.,Bourenkov, G.P.,Bartunik, H.D.,Huber, R.
      (2000) Nature 403: 800
    • Sequence Analysis of Four New Heat-Shock Genes Constituting the Hslts/Ibpab and Hslvu Operons in Escherichia Coli
      Chuang, S.E.,Burland, V.,Plunkett III, G.,Daniels, D.L.,Blattner, F.R.
      (1993) Gene 134: 1


    Organizational Affiliation

    Abteilung Strukturforschung, Max-Planck-Institut für Biochemie, Am Klopferspitz 18a, D-82152 Planegg-Martinsried, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HEAT SHOCK PROTEIN HSLV
A, B, C, D
175Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: hslV (htpO, yiiC)
EC: 3.4.25.2
Find proteins for P0A7B8 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7B8
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
HEAT SHOCK PROTEIN HSLU
E, F
449Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: hslU (htpI)
Find proteins for P0A6H5 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A6H5
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ANP
Query on ANP

Download SDF File 
Download CCD File 
E, F
PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
C10 H17 N6 O12 P3
PVKSNHVPLWYQGJ-KQYNXXCUSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.254 
  • Space Group: P 63 2 2
Unit Cell:
Length (Å)Angle (°)
a = 172.022α = 90.00
b = 172.022β = 90.00
c = 276.569γ = 120.00
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-11-17
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance