5KNE

CryoEM Reconstruction of Hsp104 Hexamer


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.64 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Spiral architecture of the Hsp104 disaggregase reveals the basis for polypeptide translocation.

Yokom, A.L.Gates, S.N.Jackrel, M.E.Mack, K.L.Su, M.Shorter, J.Southworth, D.R.

(2016) Nat.Struct.Mol.Biol. 23: 830-837

  • DOI: 10.1038/nsmb.3277

  • PubMed Abstract: 
  • Hsp104, a conserved AAA+ protein disaggregase, promotes survival during cellular stress. Hsp104 remodels amyloids, thereby supporting prion propagation, and disassembles toxic oligomers associated with neurodegenerative diseases. However, a definitiv ...

    Hsp104, a conserved AAA+ protein disaggregase, promotes survival during cellular stress. Hsp104 remodels amyloids, thereby supporting prion propagation, and disassembles toxic oligomers associated with neurodegenerative diseases. However, a definitive structural mechanism for its disaggregase activity has remained elusive. We determined the cryo-EM structure of wild-type Saccharomyces cerevisiae Hsp104 in the ATP state, revealing a near-helical hexamer architecture that coordinates the mechanical power of the 12 AAA+ domains for disaggregation. An unprecedented heteromeric AAA+ interaction defines an asymmetric seam in an apparent catalytic arrangement that aligns the domains in a two-turn spiral. N-terminal domains form a broad channel entrance for substrate engagement and Hsp70 interaction. Middle-domain helices bridge adjacent protomers across the nucleotide pocket, thus explaining roles in ATP hydrolysis and protein disaggregation. Remarkably, substrate-binding pore loops line the channel in a spiral arrangement optimized for substrate transfer across the AAA+ domains, thereby establishing a continuous path for polypeptide translocation.


    Organizational Affiliation

    Department of Biological Chemistry, Life Sciences Institute, University of Michigan, Ann Arbor, Michigan, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Heat shock protein 104
A, B, C, D, E, F
852Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: HSP104
Find proteins for P31539 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P31539
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ANP
Query on ANP

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

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.64 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical SciencesUnited StatesR01GM099836
American Heart AssociationUnited States15PRE25090089
National Science Foundation (United States)United StatesDGE-1321851
Muscular Dystrophy AssociationUnited StatesMDA277268

Revision History 

  • Version 1.0: 2016-07-27
    Type: Initial release
  • Version 1.1: 2016-08-03
    Type: Database references
  • Version 1.2: 2016-08-17
    Type: Database references
  • Version 1.3: 2016-09-21
    Type: Database references
  • Version 1.4: 2017-09-13
    Type: Author supporting evidence, Data collection