3W1Z

Heat shock protein 16.0 from Schizosaccharomyces pombe


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.401 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.246 

wwPDB Validation 3D Report Full Report


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Literature

Nonequivalence Observed for the 16-Meric Structure of a Small Heat Shock Protein, SpHsp16.0, from Schizosaccharomyces pombe

Hanazono, Y.Takeda, K.Oka, T.Abe, T.Tomonari, T.Akiyama, N.Aikawa, Y.Yohda, M.Miki, K.

(2013) Structure 21: 220-228

  • DOI: 10.1016/j.str.2012.11.015

  • PubMed Abstract: 
  • Small heat shock proteins (sHsps) play a role in preventing the fatal aggregation of denatured proteins in the presence of stresses. The sHsps exist as monodisperse oligomers in their resting state. Because the¬†hydrophobic N-terminal regions of sHsps ...

    Small heat shock proteins (sHsps) play a role in preventing the fatal aggregation of denatured proteins in the presence of stresses. The sHsps exist as monodisperse oligomers in their resting state. Because the hydrophobic N-terminal regions of sHsps are possible interaction sites for denatured proteins, the manner of assembly of the oligomer is critical for the activation and inactivation mechanisms. Here, we report the oligomer architecture of SpHsp16.0 from Schizosaccharomyces pombe determined with X-ray crystallography and small angle X-ray scattering. Both results indicate that eight dimers of SpHsp16.0 form an elongated sphere with 422 symmetry. The monomers show nonequivalence in the interaction with neighboring monomers and conformations of the N- and C-terminal regions. Variants for the N-terminal phenylalanine residues indicate that the oligomer formation ability is highly correlated with chaperone activity. Structural and biophysical results are discussed in terms of their possible relevance to the activation mechanism of SpHsp16.0.


    Organizational Affiliation

    Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Heat shock protein 16
A, B, C, D
143Schizosaccharomyces pombe (strain 972 / ATCC 24843)Mutation(s): 0 
Gene Names: hsp16
Find proteins for O14368 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
Go to UniProtKB:  O14368
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.401 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.246 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 78.296α = 90.00
b = 121.078β = 90.00
c = 122.592γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
MOLREPphasing
HKL-2000data collection
PHENIXrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-03-13
    Type: Initial release