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- PDB-7nvm: Human TRiC complex in closed state with nanobody Nb18, actin and ... -
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Basic information
Entry | Database: PDB / ID: 7nvm | |||||||||
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Title | Human TRiC complex in closed state with nanobody Nb18, actin and PhLP2A bound | |||||||||
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![]() | CHAPERONE / TRiC / CCT / ATP hydrolysis / type II chaperonin / protein folding / actin / Structural Genomics / Structural Genomics Consortium / SGC | |||||||||
Function / homology | ![]() basal body patch / : / perinucleolar compartment / tight junction assembly / positive regulation of establishment of protein localization to telomere / zona pellucida receptor complex / positive regulation of protein localization to Cajal body / scaRNA localization to Cajal body / protein localization to bicellular tight junction / positive regulation of telomerase RNA localization to Cajal body ...basal body patch / : / perinucleolar compartment / tight junction assembly / positive regulation of establishment of protein localization to telomere / zona pellucida receptor complex / positive regulation of protein localization to Cajal body / scaRNA localization to Cajal body / protein localization to bicellular tight junction / positive regulation of telomerase RNA localization to Cajal body / profilin binding / tubulin complex assembly / regulation of transepithelial transport / chaperonin-containing T-complex / : / BBSome-mediated cargo-targeting to cilium / morphogenesis of a polarized epithelium / structural constituent of postsynaptic actin cytoskeleton / Formation of the dystrophin-glycoprotein complex (DGC) / Formation of annular gap junctions / Formation of tubulin folding intermediates by CCT/TriC / Gap junction degradation / Folding of actin by CCT/TriC / Cell-extracellular matrix interactions / dense body / binding of sperm to zona pellucida / vascular endothelial growth factor receptor 2 binding / Prefoldin mediated transfer of substrate to CCT/TriC / regulation of stress fiber assembly / Adherens junctions interactions / Sensory processing of sound by outer hair cells of the cochlea / Interaction between L1 and Ankyrins / RHOBTB1 GTPase cycle / Sensory processing of sound by inner hair cells of the cochlea / sarcomere organization / regulation of peptidyl-tyrosine phosphorylation / WD40-repeat domain binding / regulation of focal adhesion assembly / apical junction complex / positive regulation of wound healing / pericentriolar material / maintenance of blood-brain barrier / NuA4 histone acetyltransferase complex / beta-tubulin binding / filamentous actin / myofibril / Association of TriC/CCT with target proteins during biosynthesis / Recycling pathway of L1 / regulation of synaptic vesicle endocytosis / EPH-ephrin mediated repulsion of cells / negative regulation of ubiquitin-dependent protein catabolic process / RHO GTPases Activate WASPs and WAVEs / RHO GTPases activate IQGAPs / chaperone-mediated protein complex assembly / heterochromatin / RHOBTB2 GTPase cycle / phagocytic vesicle / : / positive regulation of endothelial cell proliferation / positive regulation of telomere maintenance via telomerase / EPHB-mediated forward signaling / calyx of Held / protein folding chaperone / Gene and protein expression by JAK-STAT signaling after Interleukin-12 stimulation / axonogenesis / acrosomal vesicle / mRNA 3'-UTR binding / cell projection / Translocation of SLC2A4 (GLUT4) to the plasma membrane / actin filament / FCGR3A-mediated phagocytosis / cell motility / RHO GTPases Activate Formins / ATP-dependent protein folding chaperone / Signaling by high-kinase activity BRAF mutants / MAP2K and MAPK activation / Schaffer collateral - CA1 synapse / response to virus / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / Regulation of actin dynamics for phagocytic cup formation / structural constituent of cytoskeleton / cellular response to type II interferon / VEGFA-VEGFR2 Pathway / platelet aggregation / mRNA 5'-UTR binding / positive regulation of angiogenesis / Signaling by RAF1 mutants / Signaling by moderate kinase activity BRAF mutants / Paradoxical activation of RAF signaling by kinase inactive BRAF / Signaling downstream of RAS mutants / azurophil granule lumen / Signaling by BRAF and RAF1 fusions / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / unfolded protein binding / melanosome / G-protein beta-subunit binding / cell-cell junction / protein folding / actin cytoskeleton / Clathrin-mediated endocytosis Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.1 Å | |||||||||
![]() | Kelly, J.J. / Chi, G. / Bulawa, C. / Paavilainen, V.O. / Bountra, C. / Huiskonen, J.T. / Yue, W. / Structural Genomics Consortium (SGC) | |||||||||
Funding support | ![]() ![]()
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![]() | ![]() Title: Snapshots of actin and tubulin folding inside the TRiC chaperonin. Authors: John J Kelly / Dale Tranter / Els Pardon / Gamma Chi / Holger Kramer / Lotta Happonen / Kelly M Knee / Jay M Janz / Jan Steyaert / Christine Bulawa / Ville O Paavilainen / Juha T Huiskonen / Wyatt W Yue / ![]() ![]() ![]() ![]() ![]() Abstract: The integrity of a cell's proteome depends on correct folding of polypeptides by chaperonins. The chaperonin TCP-1 ring complex (TRiC) acts as obligate folder for >10% of cytosolic proteins, ...The integrity of a cell's proteome depends on correct folding of polypeptides by chaperonins. The chaperonin TCP-1 ring complex (TRiC) acts as obligate folder for >10% of cytosolic proteins, including he cytoskeletal proteins actin and tubulin. Although its architecture and how it recognizes folding substrates are emerging from structural studies, the subsequent fate of substrates inside the TRiC chamber is not defined. We trapped endogenous human TRiC with substrates (actin, tubulin) and cochaperone (PhLP2A) at different folding stages, for structure determination by cryo-EM. The already-folded regions of client proteins are anchored at the chamber wall, positioning unstructured regions toward the central space to achieve their native fold. Substrates engage with different sections of the chamber during the folding cycle, coupled to TRiC open-and-close transitions. Further, the cochaperone PhLP2A modulates folding, acting as a molecular strut between substrate and TRiC chamber. Our structural snapshots piece together an emerging model of client protein folding within TRiC. | |||||||||
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 | ![]() | 1.5 MB | Display | ![]() |
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PDB format | ![]() | 1.2 MB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 12606MC ![]() 7nvlC ![]() 7nvnC ![]() 7nvoC C: citing same article ( M: map data used to model this data |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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Components
-T-complex protein 1 subunit ... , 8 types, 16 molecules AaBbDdEeGgHhQqZz
#1: Protein | Mass: 60418.477 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #2: Protein | Mass: 57567.141 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #3: Protein | Mass: 57996.113 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #4: Protein | Mass: 59749.957 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() #5: Protein | Mass: 60613.855 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() #6: Protein | Mass: 59443.535 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #8: Protein | Mass: 59691.422 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #9: Protein | Mass: 58106.086 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() |
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-Protein , 2 types, 2 molecules KP
#10: Protein | Mass: 41838.766 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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#11: Protein | Mass: 27650.383 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Antibody , 1 types, 2 molecules Nn
#7: Antibody | Mass: 14412.816 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
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-Non-polymers , 4 types, 67 molecules 






#12: Chemical | ChemComp-ADP / #13: Chemical | ChemComp-MG / #14: Chemical | ChemComp-AF3 / #15: Water | ChemComp-HOH / | |
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-Details
Has ligand of interest | N |
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Has protein modification | Y |
-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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Molecular weight | Experimental value: NO | ||||||||||||||||||||||||||||||
Source (natural) |
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Source (recombinant) |
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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 |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: TFS KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 43 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
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Processing
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 63082 / Symmetry type: POINT | ||||||||||||||||||||||||
Refinement | Cross valid method: NONE Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
Displacement parameters | Biso mean: 71.38 Å2 | ||||||||||||||||||||||||
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