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- EMDB-23054: Focused map of the Hsp90-Hsp70-Hop-GR complex: Hsp90B-NTD-MD:Hsp7... -

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Basic information

Entry
Database: EMDB / ID: EMD-23054
TitleFocused map of the Hsp90-Hsp70-Hop-GR complex: Hsp90B-NTD-MD:Hsp70D-NBD
Map dataFocused map of the Hsp90-Hsp70-Hop-GR complex: Hsp90B-NTD-MD:Hsp70D-NBD
Sample
  • Complex: Hsp90-Hsp70-Hop-GR complex
Function / homology
Function and homology information


positive regulation of endoribonuclease activity / denatured protein binding / cellular heat acclimation / negative regulation of inclusion body assembly / Viral RNP Complexes in the Host Cell Nucleus / positive regulation of nucleotide-binding oligomerization domain containing 2 signaling pathway / death receptor agonist activity / C3HC4-type RING finger domain binding / ATP-dependent protein disaggregase activity / positive regulation of microtubule nucleation ...positive regulation of endoribonuclease activity / denatured protein binding / cellular heat acclimation / negative regulation of inclusion body assembly / Viral RNP Complexes in the Host Cell Nucleus / positive regulation of nucleotide-binding oligomerization domain containing 2 signaling pathway / death receptor agonist activity / C3HC4-type RING finger domain binding / ATP-dependent protein disaggregase activity / positive regulation of microtubule nucleation / misfolded protein binding / regulation of mitotic spindle assembly / positive regulation of tumor necrosis factor-mediated signaling pathway / negative regulation of mitochondrial outer membrane permeabilization involved in apoptotic signaling pathway / transcription regulator inhibitor activity / aggresome / lysosomal transport / sperm mitochondrial sheath / dATP binding / Scavenging by Class F Receptors / sulfonylurea receptor binding / CTP binding / positive regulation of protein polymerization / vRNP Assembly / UTP binding / sperm plasma membrane / positive regulation of tau-protein kinase activity / protein insertion into mitochondrial outer membrane / telomerase holoenzyme complex assembly / chaperone-mediated autophagy / Rho GDP-dissociation inhibitor binding / cellular response to steroid hormone stimulus / Uptake and function of diphtheria toxin / mitochondrial transport / Drug-mediated inhibition of ERBB2 signaling / Resistance of ERBB2 KD mutants to trastuzumab / Resistance of ERBB2 KD mutants to sapitinib / Resistance of ERBB2 KD mutants to tesevatinib / Resistance of ERBB2 KD mutants to neratinib / Resistance of ERBB2 KD mutants to osimertinib / Resistance of ERBB2 KD mutants to afatinib / Resistance of ERBB2 KD mutants to AEE788 / Resistance of ERBB2 KD mutants to lapatinib / Drug resistance in ERBB2 TMD/JMD mutants / PIWI-interacting RNA (piRNA) biogenesis / TPR domain binding / mRNA catabolic process / non-chaperonin molecular chaperone ATPase / regulation of postsynaptic membrane neurotransmitter receptor levels / dendritic growth cone / chaperone cofactor-dependent protein refolding / Sema3A PAK dependent Axon repulsion / regulation of protein ubiquitination / positive regulation of cell size / skeletal muscle contraction / protein unfolding / regulation of protein-containing complex assembly / HSF1-dependent transactivation / telomere maintenance via telomerase / response to unfolded protein / negative regulation of extrinsic apoptotic signaling pathway in absence of ligand / Regulation of HSF1-mediated heat shock response / HSF1 activation / chaperone-mediated protein complex assembly / Attenuation phase / cellular response to unfolded protein / RHOBTB2 GTPase cycle / DNA polymerase binding / positive regulation of lamellipodium assembly / axonal growth cone / negative regulation of endoplasmic reticulum stress-induced intrinsic apoptotic signaling pathway / eNOS activation / inclusion body / ATP metabolic process / protein folding chaperone / endocytic vesicle lumen / Tetrahydrobiopterin (BH4) synthesis, recycling, salvage and regulation / negative regulation of protein ubiquitination / Loss of Nlp from mitotic centrosomes / Loss of proteins required for interphase microtubule organization from the centrosome / positive regulation of cardiac muscle contraction / positive regulation of defense response to virus by host / Signaling by ERBB2 / Recruitment of mitotic centrosome proteins and complexes / cardiac muscle cell apoptotic process / response to salt stress / positive regulation of telomerase activity / Recruitment of NuMA to mitotic centrosomes / heat shock protein binding / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / protein tyrosine kinase binding / Anchoring of the basal body to the plasma membrane / positive regulation of interferon-beta production / centriole / activation of innate immune response / response to cold / nitric-oxide synthase regulator activity / lysosomal lumen / Constitutive Signaling by Overexpressed ERBB2 / ESR-mediated signaling
Similarity search - Function
Heat shock hsp70 proteins family signature 2. / Heat shock hsp70 proteins family signature 1. / Heat shock hsp70 proteins family signature 3. / Heat shock protein 70, conserved site / Heat shock protein 70kD, peptide-binding domain superfamily / Heat shock protein 70 family / Hsp70 protein / Heat shock protein 70kD, C-terminal domain superfamily / Heat shock protein Hsp90, conserved site / Heat shock hsp90 proteins family signature. ...Heat shock hsp70 proteins family signature 2. / Heat shock hsp70 proteins family signature 1. / Heat shock hsp70 proteins family signature 3. / Heat shock protein 70, conserved site / Heat shock protein 70kD, peptide-binding domain superfamily / Heat shock protein 70 family / Hsp70 protein / Heat shock protein 70kD, C-terminal domain superfamily / Heat shock protein Hsp90, conserved site / Heat shock hsp90 proteins family signature. / HSP90, C-terminal domain / Heat shock protein Hsp90, N-terminal / Heat shock protein Hsp90 family / Hsp90 protein / Histidine kinase-, DNA gyrase B-, and HSP90-like ATPase / Histidine kinase-like ATPases / Histidine kinase/HSP90-like ATPase / Histidine kinase/HSP90-like ATPase superfamily / ATPase, nucleotide binding domain / Ribosomal protein S5 domain 2-type fold
Similarity search - Domain/homology
Heat shock protein HSP 90-alpha / Heat shock 70 kDa protein 1A
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.53 Å
AuthorsWang RY / Agard DA
Funding support United States, 1 items
OrganizationGrant numberCountry
Howard Hughes Medical Institute (HHMI) United States
CitationJournal: Nature / Year: 2022
Title: Structure of Hsp90-Hsp70-Hop-GR reveals the Hsp90 client-loading mechanism.
Authors: Ray Yu-Ruei Wang / Chari M Noddings / Elaine Kirschke / Alexander G Myasnikov / Jill L Johnson / David A Agard /
Abstract: Maintaining a healthy proteome is fundamental for the survival of all organisms. Integral to this are Hsp90 and Hsp70, molecular chaperones that together facilitate the folding, remodelling and ...Maintaining a healthy proteome is fundamental for the survival of all organisms. Integral to this are Hsp90 and Hsp70, molecular chaperones that together facilitate the folding, remodelling and maturation of the many 'client proteins' of Hsp90. The glucocorticoid receptor (GR) is a model client protein that is strictly dependent on Hsp90 and Hsp70 for activity. Chaperoning GR involves a cycle of inactivation by Hsp70; formation of an inactive GR-Hsp90-Hsp70-Hop 'loading' complex; conversion to an active GR-Hsp90-p23 'maturation' complex; and subsequent GR release. However, to our knowledge, a molecular understanding of this intricate chaperone cycle is lacking for any client protein. Here we report the cryo-electron microscopy structure of the GR-loading complex, in which Hsp70 loads GR onto Hsp90, uncovering the molecular basis of direct coordination by Hsp90 and Hsp70. The structure reveals two Hsp70 proteins, one of which delivers GR and the other scaffolds the Hop cochaperone. Hop interacts with all components of the complex, including GR, and poises Hsp90 for subsequent ATP hydrolysis. GR is partially unfolded and recognized through an extended binding pocket composed of Hsp90, Hsp70 and Hop, revealing the mechanism of GR loading and inactivation. Together with the GR-maturation complex structure, we present a complete molecular mechanism of chaperone-dependent client remodelling, and establish general principles of client recognition, inhibition, transfer and activation.
History
DepositionDec 1, 2020-
Header (metadata) releaseDec 8, 2021-
Map releaseDec 8, 2021-
UpdateFeb 2, 2022-
Current statusFeb 2, 2022Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.025
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 0.025
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_23054.png

Downloads & links

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Map

FileDownload / File: emd_23054.map.gz / Format: CCP4 / Size: 125 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationFocused map of the Hsp90-Hsp70-Hop-GR complex: Hsp90B-NTD-MD:Hsp70D-NBD
Voxel sizeX=Y=Z: 1.059 Å
Density
Contour LevelBy AUTHOR: 0.025 / Movie #1: 0.025
Minimum - Maximum-0.028349116 - 0.08549048
Average (Standard dev.)-0.0001348322 (±0.0019274645)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions320320320
Spacing320320320
CellA=B=C: 338.88 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.0591.0591.059
M x/y/z320320320
origin x/y/z0.0000.0000.000
length x/y/z338.880338.880338.880
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS320320320
D min/max/mean-0.0280.085-0.000

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Supplemental data

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Sample components

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Entire : Hsp90-Hsp70-Hop-GR complex

EntireName: Hsp90-Hsp70-Hop-GR complex
Components
  • Complex: Hsp90-Hsp70-Hop-GR complex

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Supramolecule #1: Hsp90-Hsp70-Hop-GR complex

SupramoleculeName: Hsp90-Hsp70-Hop-GR complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#6
Source (natural)Organism: Homo sapiens (human)
Recombinant expressionOrganism: Escherichia coli (E. coli)

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.5
VitrificationCryogen name: ETHANE-PROPANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 80.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: EMDB MAP
EMDB ID:

23050

Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 3.0)
Final 3D classificationNumber classes: 4 / Software - Name: RELION (ver. 3.0)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 3.0)
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.53 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.0) / Number images used: 56945

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Atomic model buiding 1

RefinementSpace: REAL / Protocol: FLEXIBLE FIT / Overall B value: 92

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