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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-8267 | |||||||||||||||
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Title | CryoEM Reconstruction of Hsp104 Hexamer | |||||||||||||||
![]() | Hexamer Reconstruction | |||||||||||||||
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![]() | Hsp104 / AAA+ protein / CHAPERONE | |||||||||||||||
Function / homology | ![]() 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 | ![]() ![]() | |||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 5.64 Å | |||||||||||||||
![]() | Yokom AL / Gates SN | |||||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Spiral architecture of the Hsp104 disaggregase reveals the basis for polypeptide translocation. Authors: Adam L Yokom / Stephanie N Gates / Meredith E Jackrel / Korrie L Mack / Min Su / James Shorter / Daniel R Southworth / ![]() Abstract: Hsp104, a conserved AAA+ protein disaggregase, promotes survival during cellular stress. Hsp104 remodels amyloids, thereby supporting prion propagation, and disassembles toxic oligomers associated ...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. | |||||||||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 10.7 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 13 KB 13 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 5.2 KB | Display | ![]() |
Images | ![]() | 89.2 KB | ||
Filedesc metadata | ![]() | 6.2 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 5kneMC M: atomic model generated by this map C: citing same article ( |
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Similar structure data |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Annotation | Hexamer Reconstruction | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 2 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
-Entire : Hexamer Complex of Hsp104
Entire | Name: Hexamer Complex of Hsp104 |
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Components |
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-Supramolecule #1: Hexamer Complex of Hsp104
Supramolecule | Name: Hexamer Complex of Hsp104 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1 |
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Source (natural) | Organism: ![]() ![]() |
-Macromolecule #1: Heat shock protein 104
Macromolecule | Name: Heat shock protein 104 / type: protein_or_peptide / ID: 1 / Number of copies: 6 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 95.967398 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: QFTERALTIL TLAQKLASDH QHPQLQPIHI LAAFIETPED GSVPYLQNLI EKGRYDYDLF KKVVNRNLVR IPQQQPAPAE ITPSYALGK VLQDAAKIQK QQKDSFIAQD HILFALFNDS SIQQIFKEAQ VDIEAIKQQA LELRGNTRID SRGADTNTPL E YLSKYAID ...String: QFTERALTIL TLAQKLASDH QHPQLQPIHI LAAFIETPED GSVPYLQNLI EKGRYDYDLF KKVVNRNLVR IPQQQPAPAE ITPSYALGK VLQDAAKIQK QQKDSFIAQD HILFALFNDS SIQQIFKEAQ VDIEAIKQQA LELRGNTRID SRGADTNTPL E YLSKYAID MTEQARQGKL DPVIGREEEI RSTIRVLARR IKSNPCLIGE PGIGKTAIIE GVAQRIIDDD VPTILQGAKL FS LDLAALT AGAKYKGDFE ERFKGVLKEI EESKTLIVLF IDEIHMLMGN GKDDAANILK PALSRGQLKV IGATTNNEYR SIV EKDGAF ERRFQKIEVA EPSVRQTVAI LRGLQPKYEI HHGVRILDSA LVTAAQLAKR YLPYRRLPDS ALDLVDISCA GVAV ARDSK PEELDSKERQ LQLIQVEIKA LERDEDADST TKDRLKLARQ KEASLQEELE PLRQRYNEEK HGHEELTQAK KKLDE LENK ALDAERRYDT ATAADLRYFA IPDIKKQIEK LEDQVAEEER RAGANSMIQN VVDSDTISET AARLTGIPVK KLSESE NEK LIHMERDLSS EVVGQMDAIK AVSNAVRLSR SGLANPRQPA SFLFLGLSGS GKTELAKKVA GFLFNDEDMM IRVDCSE LS EKYAVSKLLG TTAGYVGYDE GGFLTNQLQY KPYSVLLFDE VEKAHPDVLT VMLQMLDDGR ITSGQGKTID CSNCIVIM T SNLGAEFINS QQGSKIQEST KNLVMGAVRQ HFRPEFLNRI SSIVIFNKLS RKAIHKIVDI RLKEIEERFE QNDKHYKLN LTQEAKDFLA KYGYSDDMGA RPLNRLIQNE ILNKLALRIL KNEIKDKETV NV UniProtKB: Heat shock protein 104 |
-Macromolecule #2: PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
Macromolecule | Name: PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER / type: ligand / ID: 2 / Number of copies: 11 / Formula: ANP |
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Molecular weight | Theoretical: 506.196 Da |
Chemical component information | ![]() ChemComp-ANP: |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 0.7 mg/mL |
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Buffer | pH: 7.5 |
Grid | Model: C-flat / Material: COPPER / Mesh: 200 / Support film - Material: CARBON / Support film - topology: HOLEY / Support film - Film thickness: 2 / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 30 sec. |
Vitrification | Cryogen name: ETHANE / Instrument: FEI VITROBOT MARK IV Details: Plunged into liquid ethane (FEI VITROBOT MARK IV). |
Details | Clean protein sample incubated with AMP-PNP |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Digitization - Frames/image: 2-40 / Number grids imaged: 2 / Number real images: 3661 / Average exposure time: 0.2 sec. / Average electron dose: 1.6 e/Å2 Details: Movies contained 38 of 40 frames from an 8 sec exposure (200 milliseconds per frame). |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
-Atomic model buiding 1
Details | Backbone atoms fit into reconstruction density. |
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Output model | ![]() PDB-5kne: |