6AHF

CryoEM Reconstruction of Hsp104 N728A Hexamer


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.78 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Heat shock protein 104 (HSP104) chaperones soluble Tau via a mechanism distinct from its disaggregase activity.

Zhang, X.Zhang, S.Zhang, L.Lu, J.Zhao, C.Luo, F.Li, D.Li, X.Liu, C.

(2019) J Biol Chem 294: 4956-4965

  • DOI: 10.1074/jbc.RA118.005980
  • Primary Citation of Related Structures:  
    6AHF

  • PubMed Abstract: 
  • Heat shock protein 104 (HSP104) is a conserved AAA+ protein disaggregase, can disassemble the toxic aggregates formed by different amyloid proteins, and is protective in various animal models associated with amyloid-related diseases. Extensive studie ...

    Heat shock protein 104 (HSP104) is a conserved AAA+ protein disaggregase, can disassemble the toxic aggregates formed by different amyloid proteins, and is protective in various animal models associated with amyloid-related diseases. Extensive studies have attempted to elucidate how HSP104 disassembles the aggregated form of clients. Here, we found that HSP104 exhibits a potent holdase activity that does not require energy, prevents the soluble form of amyloid clients from aggregating, and differs from HSP104's disaggregase activity. Using cryo-EM, NMR, and additional biophysical approaches, we found that HSP104 utilizes its small subdomain of nucleotide-binding domain 2 (ssNBD2) to capture the soluble amyloid client (K19 of Tau) independent of its ATP hydrolysis activity. Our results indicate that HSP104 utilizes two fundamental distinct mechanisms to chaperone different forms of amyloid client and highlight the important yet previously unappreciated function of ssNBD2 in chaperoning amyloid client and thereby preventing pathological aggregation.


    Organizational Affiliation

    From the Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 201210, China, liulab@sioc.ac.cn.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Heat shock protein 104ABCDEF908Saccharomyces cerevisiae S288CMutation(s): 1 
Gene Names: HSP104YLL026WL0948
Find proteins for P31539 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P31539 
Go to UniProtKB:  P31539
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
AGS
Query on AGS

Download CCD File 
C, D, E, F
PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER
C10 H16 N5 O12 P3 S
NLTUCYMLOPLUHL-KQYNXXCUSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.78 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Natural Science Foundation of ChinaChina31470748

Revision History 

  • Version 1.0: 2019-02-13
    Type: Initial release
  • Version 1.1: 2019-02-20
    Changes: Data collection, Database references
  • Version 1.2: 2019-04-10
    Changes: Data collection, Database references