+Open data
-Basic information
Entry | Database: PDB / ID: 5vy9 | ||||||
---|---|---|---|---|---|---|---|
Title | S. cerevisiae Hsp104:casein complex, Middle Domain Conformation | ||||||
Components |
| ||||||
Keywords | CHAPERONE / Hsp104 / cryoem / AAA+ | ||||||
Function / homology | Function and homology information trehalose metabolism in response to heat stress / TRC complex / cellular heat acclimation / protein folding in endoplasmic reticulum / post-translational protein targeting to endoplasmic reticulum membrane / stress granule disassembly / chaperone cofactor-dependent protein refolding / protein unfolding / nuclear periphery / ADP binding ...trehalose metabolism in response to heat stress / TRC complex / cellular heat acclimation / protein folding in endoplasmic reticulum / post-translational protein targeting to endoplasmic reticulum membrane / stress granule disassembly / chaperone cofactor-dependent protein refolding / protein unfolding / nuclear periphery / ADP binding / unfolded protein binding / protein-folding chaperone binding / cellular response to heat / protein refolding / ATP hydrolysis activity / ATP binding / identical protein binding / nucleus / cytosol / cytoplasm Similarity search - Function | ||||||
Biological species | Saccharomyces cerevisiae (brewer's yeast) Bos taurus (cattle) | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 6.7 Å | ||||||
Authors | Gates, S.N. / Yokom, A.L. / Lin, J.-B. / Jackrel, M.E. / Rizo, A.N. / Kendsersky, N.M. / Buell, C.E. / Sweeny, E.A. / Chuang, E. / Torrente, M.P. ...Gates, S.N. / Yokom, A.L. / Lin, J.-B. / Jackrel, M.E. / Rizo, A.N. / Kendsersky, N.M. / Buell, C.E. / Sweeny, E.A. / Chuang, E. / Torrente, M.P. / Mack, K.L. / Su, M. / Shorter, J. / Southworth, D.R. | ||||||
Citation | Journal: Science / Year: 2017 Title: Ratchet-like polypeptide translocation mechanism of the AAA+ disaggregase Hsp104. Authors: Stephanie N Gates / Adam L Yokom / JiaBei Lin / Meredith E Jackrel / Alexandrea N Rizo / Nathan M Kendsersky / Courtney E Buell / Elizabeth A Sweeny / Korrie L Mack / Edward Chuang / Mariana ...Authors: Stephanie N Gates / Adam L Yokom / JiaBei Lin / Meredith E Jackrel / Alexandrea N Rizo / Nathan M Kendsersky / Courtney E Buell / Elizabeth A Sweeny / Korrie L Mack / Edward Chuang / Mariana P Torrente / Min Su / James Shorter / Daniel R Southworth / 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 ...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 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. | ||||||
History |
|
-Structure visualization
Movie |
Movie viewer |
---|---|
Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 5vy9.cif.gz | 826.5 KB | Display | PDBx/mmCIF format |
---|---|---|---|---|
PDB format | pdb5vy9.ent.gz | 654.8 KB | Display | PDB format |
PDBx/mmJSON format | 5vy9.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 5vy9_validation.pdf.gz | 1.7 MB | Display | wwPDB validaton report |
---|---|---|---|---|
Full document | 5vy9_full_validation.pdf.gz | 1.6 MB | Display | |
Data in XML | 5vy9_validation.xml.gz | 126 KB | Display | |
Data in CIF | 5vy9_validation.cif.gz | 190.5 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/vy/5vy9 ftp://data.pdbj.org/pub/pdb/validation_reports/vy/5vy9 | HTTPS FTP |
-Related structure data
Related structure data | 8745MC 8697C 8744C 8746C 5vjhC 5vy8C 5vyaC C: citing same article (ref.) M: map data used to model this data |
---|---|
Similar structure data |
-Links
-Assembly
Deposited unit |
|
---|---|
1 |
|
-Components
#1: Protein | Mass: 102173.961 Da / Num. of mol.: 6 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (yeast) Strain: ATCC 204508 / S288c / Gene: HSP104, YLL026W, L0948 / Production host: Escherichia coli (E. coli) / References: UniProt: P31539 #2: Protein/peptide | | Mass: 2400.951 Da / Num. of mol.: 1 / Source method: isolated from a natural source Details: protein was purchased from Sigma-Aldrich. purified from bovine milk Source: (natural) Bos taurus (cattle) #3: Chemical | ChemComp-AGS / |
---|
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
---|---|
EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-Sample preparation
Component |
| ||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Molecular weight | Experimental value: NO | ||||||||||||||||||||||||
Source (natural) |
| ||||||||||||||||||||||||
Source (recombinant) | Organism: Escherichia coli K-12 (bacteria) / Strain: K-12 | ||||||||||||||||||||||||
Buffer solution | pH: 7.5 | ||||||||||||||||||||||||
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||
Vitrification | Cryogen name: ETHANE |
-Electron microscopy imaging
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
---|---|
Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 50000 X |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Electron dose: 0.8 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
-Processing
Image processing | Details: Removed first 2 frames from movie before drift correction |
---|---|
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
3D reconstruction | Resolution: 6.7 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 146463 / Symmetry type: POINT |