1HQY

Nucleotide-Dependent Conformational Changes in a Protease-Associated ATPase HslU


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.333 
  • R-Value Work: 0.287 
  • R-Value Observed: 0.287 

wwPDB Validation   3D Report Full Report


This is version 1.5 of the entry. See complete history


Literature

Nucleotide-dependent conformational changes in a protease-associated ATPase HsIU.

Wang, J.Song, J.J.Seong, I.S.Franklin, M.C.Kamtekar, S.Eom, S.H.Chung, C.H.

(2001) Structure 9: 1107-1116

  • DOI: https://doi.org/10.1016/s0969-2126(01)00670-0
  • Primary Citation of Related Structures:  
    1HQY, 1HT1, 1HT2

  • PubMed Abstract: 

    The bacterial heat shock locus ATPase HslU is an AAA(+) protein that has structures known in many nucleotide-free and -bound states. Nucleotide is required for the formation of the biologically active HslU hexameric assembly. The hexameric HslU ATPase binds the dodecameric HslV peptidase and forms an ATP-dependent HslVU protease. We have characterized four distinct HslU conformational states, going sequentially from open to closed: the empty, SO(4), ATP, and ADP states. The nucleotide binds at a cleft formed by an alpha/beta domain and an alpha-helical domain in HslU. The four HslU states differ by a rotation of the alpha-helical domain. This classification leads to a correction of nucleotide identity in one structure and reveals the ATP hydrolysis-dependent structural changes in the HslVU complex, including a ring rotation and a conformational change of the HslU C terminus. This leads to an amended protein unfolding-coupled translocation mechanism. The observed nucleotide-dependent conformational changes in HslU and their governing principles provide a framework for the mechanistic understanding of other AAA(+) proteins.


  • Organizational Affiliation

    Department of Molecular Biophysics and Biochemistry, Yale University, 266 Whitney Avenue, New Haven, CT 06520, USA. wang@mail.csb.yale.edu


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
HEAT SHOCK LOCUS HSLV
A, B, C, D
175Escherichia coli BL21(DE3)Mutation(s): 0 
UniProt
Find proteins for P0A7B8 (Escherichia coli (strain K12))
Explore P0A7B8 
Go to UniProtKB:  P0A7B8
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0A7B8
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
HEAT SHOCK LOCUS HSLU
E, F
449Escherichia coli BL21(DE3)Mutation(s): 0 
UniProt
Find proteins for P0A6H5 (Escherichia coli (strain K12))
Explore P0A6H5 
Go to UniProtKB:  P0A6H5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0A6H5
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP

Download Ideal Coordinates CCD File 
G [auth E],
H [auth F]
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.333 
  • R-Value Work: 0.287 
  • R-Value Observed: 0.287 
  • Space Group: P 63 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 172.022α = 90
b = 172.022β = 90
c = 276.569γ = 120
Software Package:
Software NamePurpose
CNSrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2001-11-14
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Source and taxonomy, Version format compliance
  • Version 1.3: 2013-09-25
    Changes: Derived calculations
  • Version 1.4: 2018-05-30
    Changes: Data collection, Derived calculations
  • Version 1.5: 2024-02-07
    Changes: Data collection, Database references, Derived calculations