7CG3

Staggered ring conformation of CtHsp104 (Hsp104 from Chaetomium Thermophilum)


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.10 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Split conformation of Chaetomium thermophilum Hsp104 disaggregase.

Inoue, Y.Hanazono, Y.Noi, K.Kawamoto, A.Kimatsuka, M.Harada, R.Takeda, K.Kita, R.Iwamasa, N.Shibata, K.Noguchi, K.Shigeta, Y.Namba, K.Ogura, T.Miki, K.Shinohara, K.Yohda, M.

(2021) Structure 29: 721-730.e6

  • DOI: 10.1016/j.str.2021.02.002
  • Primary Citation of Related Structures:  
    7CG3, 5ZUI

  • PubMed Abstract: 
  • Hsp104 and its bacterial homolog ClpB form hexameric ring structures and mediate protein disaggregation. The disaggregated polypeptide is thought to thread through the central channel of the ring. However, the dynamic behavior of Hsp104 during disaggregation remains unclear ...

    Hsp104 and its bacterial homolog ClpB form hexameric ring structures and mediate protein disaggregation. The disaggregated polypeptide is thought to thread through the central channel of the ring. However, the dynamic behavior of Hsp104 during disaggregation remains unclear. Here, we reported the stochastic conformational dynamics and a split conformation of Hsp104 disaggregase from Chaetomium thermophilum (CtHsp104) in the presence of ADP by X-ray crystallography, cryo-electron microscopy (EM), and high-speed atomic force microscopy (AFM). ADP-bound CtHsp104 assembles into a 6 5 left-handed spiral filament in the crystal structure at a resolution of 2.7 Å. The unit of the filament is a hexamer of the split spiral structure. In the cryo-EM images, staggered and split hexameric rings were observed. Further, high-speed AFM observations showed that a substrate addition enhanced the conformational change and increased the split structure's frequency. Our data suggest that split conformation is an off-pathway state of CtHsp104 during disaggregation.


    Organizational Affiliation

    Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Heat shock protein 104B [auth A], C [auth B], D [auth C], E [auth D], F [auth E], A [auth F]764Chaetomium thermophilum var. coprophilumMutation(s): 0 
Gene Names: hsp104
UniProt
Find proteins for A0A2Z6G185 (Chaetomium thermophilum var. coprophilum)
Explore A0A2Z6G185 
Go to UniProtKB:  A0A2Z6G185
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.10 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Japan Society for the Promotion of Science (JSPS)JapanP15J08261
Japan Society for the Promotion of Science (JSPS)JapanJP16H04572
Japan Society for the Promotion of Science (JSPS)JapanJP16H00753
Japan Society for the Promotion of Science (JSPS)Japan18H04690

Revision History  (Full details and data files)

  • Version 1.0: 2021-04-28
    Type: Initial release
  • Version 1.1: 2021-07-14
    Changes: Database references