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Open data
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Basic information
Entry | Database: PDB / ID: 7kw7 | ||||||
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Title | Atomic cryoEM structure of Hsp90-Hsp70-Hop-GR | ||||||
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![]() | CHAPERONE / Client-loading | ||||||
Function / homology | ![]() Regulation of NPAS4 gene transcription / : / denatured protein binding / regulation of glucocorticoid biosynthetic process / nuclear glucocorticoid receptor activity / cellular heat acclimation / steroid hormone binding / negative regulation of inclusion body assembly / Viral RNP Complexes in the Host Cell Nucleus / death receptor agonist activity ...Regulation of NPAS4 gene transcription / : / denatured protein binding / regulation of glucocorticoid biosynthetic process / nuclear glucocorticoid receptor activity / cellular heat acclimation / steroid hormone binding / negative regulation of inclusion body assembly / Viral RNP Complexes in the Host Cell Nucleus / death receptor agonist activity / C3HC4-type RING finger domain binding / glucocorticoid metabolic process / response to cortisol / positive regulation of nucleotide-binding oligomerization domain containing 2 signaling pathway / PTK6 Expression / neuroinflammatory response / dynein axonemal particle / positive regulation of microtubule nucleation / mammary gland duct morphogenesis / ATP-dependent protein disaggregase activity / microglia differentiation / misfolded protein binding / maternal behavior / astrocyte differentiation / negative regulation of mitochondrial outer membrane permeabilization involved in apoptotic signaling pathway / positive regulation of tumor necrosis factor-mediated signaling pathway / regulation of mitotic spindle assembly / cellular response to interleukin-7 / protein folding chaperone complex / RND1 GTPase cycle / aggresome / lysosomal transport / adrenal gland development / regulation of gluconeogenesis / cellular response to glucocorticoid stimulus / sulfonylurea receptor binding / sperm mitochondrial sheath / dATP binding / CTP binding / positive regulation of protein polymerization / Scavenging by Class F Receptors / cellular response to steroid hormone stimulus / vRNP Assembly / UTP binding / sperm plasma membrane / chaperone-mediated autophagy / Rho GDP-dissociation inhibitor binding / Respiratory syncytial virus genome replication / telomerase holoenzyme complex assembly / mitochondrial transport / Uptake and function of diphtheria toxin / protein insertion into mitochondrial outer membrane / 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 / TPR domain binding / dendritic growth cone / mRNA catabolic process / motor behavior / Assembly and release of respiratory syncytial virus (RSV) virions / PIWI-interacting RNA (piRNA) biogenesis / non-chaperonin molecular chaperone ATPase / : / Sema3A PAK dependent Axon repulsion / protein unfolding / regulation of protein ubiquitination / positive regulation of cell size / Regulation of HSF1-mediated heat shock response / estrogen response element binding / HSF1-dependent transactivation / cellular response to unfolded protein / response to unfolded protein / negative regulation of extrinsic apoptotic signaling pathway in absence of ligand / enzyme-substrate adaptor activity / Mitochondrial unfolded protein response (UPRmt) / skeletal muscle contraction / HSF1 activation / nuclear receptor-mediated steroid hormone signaling pathway / regulation of protein-containing complex assembly / FOXO-mediated transcription of oxidative stress, metabolic and neuronal genes / telomere maintenance via telomerase / Attenuation phase / chaperone-mediated protein complex assembly / cellular response to transforming growth factor beta stimulus / regulation of postsynaptic membrane neurotransmitter receptor levels / neurofibrillary tangle assembly / axonal growth cone / RHOBTB2 GTPase cycle / negative regulation of endoplasmic reticulum stress-induced intrinsic apoptotic signaling pathway / core promoter sequence-specific DNA binding / ATP metabolic process / transcription regulator inhibitor activity / positive regulation of lamellipodium assembly Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.57 Å | ||||||
![]() | Wang, R.Y. / Noddings, C.M. / Kirschke, E. / Myasnikov, A. / Johnson, J.L. / Agard, D.A. | ||||||
Funding support | ![]()
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![]() | ![]() 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 |
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 1018.1 KB | Display | ![]() |
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PDB format | ![]() | 838.1 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1.4 MB | Display | ![]() |
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Full document | ![]() | 1.4 MB | Display | |
Data in XML | ![]() | 80.6 KB | Display | |
Data in CIF | ![]() | 125.4 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 23050MC M: map data used to model this data C: citing same article ( |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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Components
-Protein , 4 types, 6 molecules ABCDEF
#1: Protein | Mass: 84781.727 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #2: Protein | Mass: 70140.133 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() #3: Protein | | Mass: 62738.301 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #4: Protein | | Mass: 85673.906 Da / Num. of mol.: 1 / Mutation: F602S Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
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-Non-polymers , 3 types, 6 molecules 




#5: Chemical | #6: Chemical | #7: Chemical | |
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-Details
Has ligand of interest | N |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
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Buffer solution | pH: 7.5 | ||||||||||||||||||||||||||||||||||||
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||||||||||||||
Vitrification | Cryogen name: ETHANE-PROPANE |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 80 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
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Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||
3D reconstruction | Resolution: 3.57 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 85619 / Symmetry type: POINT | ||||||||||||||||||||
Atomic model building | B value: 80 / Protocol: FLEXIBLE FIT / Space: REAL |