5VJH

Closed State CryoEM Reconstruction of Hsp104:ATPyS and FITC casein


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4 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:  

  • 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

    Department of Biochemistry and Biophysics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA.,Department of Biological Chemistry, Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109, USA.,Chemistry Department of Brooklyn College and Ph.D. Programs in Chemistry, Biochemistry, and Biology, Graduate Center of the City University of New York, New York, NY 10016, USA.,Pharmacology Graduate Group, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA.,Graduate Program in Chemical Biology, Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109, USA.,Department of Biological Chemistry, Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109, USA. dsouth@umich.edu.,Biochemistry and Molecular Biophysics Graduate Group, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Heat shock protein 104
A, B, C, D, E, F
908Saccharomyces 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
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
FITC casein
P
26N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
AGS
Query on AGS

Download SDF File 
Download CCD File 
A, B, C, D, E, F
PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER
ATP-GAMMA-S; ADENOSINE 5'-(3-THIOTRIPHOSPHATE); ADENOSINE 5'-(GAMMA-THIOTRIPHOSPHATE); ADENOSINE-5'-DIPHOSPHATE MONOTHIOPHOSPHATE
C10 H16 N5 O12 P3 S
NLTUCYMLOPLUHL-KQYNXXCUSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
UNK
Query on UNK
P
L-PEPTIDE LINKINGC4 H9 N O2

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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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