5VJH

Closed State CryoEM Reconstruction of Hsp104:ATPyS and FITC casein


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.00 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 2.1 of the entry. See complete history


Literature

Ratchet-like polypeptide translocation mechanism of the AAA+ disaggregase Hsp104.

Gates, S.N.Yokom, A.L.Lin, J.Jackrel, M.E.Rizo, A.N.Kendsersky, N.M.Buell, C.E.Sweeny, E.A.Mack, K.L.Chuang, E.Torrente, M.P.Su, M.Shorter, J.Southworth, D.R.

(2017) Science 357: 273-279

  • DOI: 10.1126/science.aan1052
  • Primary Citation of Related Structures:  
    5VJH, 5VYA, 5VY9, 5VY8

  • PubMed Abstract: 
  • Hsp100 polypeptide translocases are conserved members of the AAA+ family (adenosine triphosphatases associated with diverse cellular activities) that maintain proteostasis by unfolding aberrant and toxic proteins for refolding or proteolytic degradat ...

    Hsp100 polypeptide translocases are conserved members of the AAA+ family (adenosine triphosphatases associated with diverse cellular activities) that maintain proteostasis by unfolding aberrant and toxic proteins for refolding or proteolytic degradation. The Hsp104 disaggregase from Saccharomyces cerevisiae solubilizes stress-induced amorphous aggregates and amyloids. The structural basis for substrate recognition and translocation is unknown. Using a model substrate (casein), we report cryo-electron microscopy structures at near-atomic resolution of Hsp104 in different translocation states. Substrate interactions are mediated by conserved, pore-loop tyrosines that contact an 80-angstrom-long unfolded polypeptide along the axial channel. Two protomers undergo a ratchet-like conformational change that advances pore loop-substrate interactions by two amino acids. These changes are coupled to activation of specific nucleotide hydrolysis sites and, when transmitted around the hexamer, reveal a processive rotary translocation mechanism and substrate-responsive flexibility during Hsp104-catalyzed disaggregation.


    Organizational Affiliation

    Graduate Program in Chemical Biology, Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Heat shock protein 104ABCDEF908Saccharomyces cerevisiae S288CMutation(s): 0 
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
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
FITC caseinP26Bos taurusMutation(s): 0 
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 
A, B, 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: 4.00 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-07-05
    Type: Initial release
  • Version 2.0: 2017-07-19
    Changes: Advisory, Atomic model, Data collection, Derived calculations
  • Version 2.1: 2017-08-02
    Changes: Database references