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Open data
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Basic information
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| Title | The beta-tubulin folding intermediate II | ||||||||||||
Map data | sharpened map of tubulin intermediate in closed TRiC | ||||||||||||
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Keywords | Human chaperonin TRiC with beta-tubulin folding intermediate II / CHAPERONE | ||||||||||||
| Function / homology | Function and homology informationodontoblast differentiation / zona pellucida receptor complex / positive regulation of establishment of protein localization to telomere / cytoskeleton-dependent intracellular transport / positive regulation of protein localization to Cajal body / scaRNA localization to Cajal body / positive regulation of telomerase RNA localization to Cajal body / tubulin complex assembly / chaperonin-containing T-complex / : ...odontoblast differentiation / zona pellucida receptor complex / positive regulation of establishment of protein localization to telomere / cytoskeleton-dependent intracellular transport / positive regulation of protein localization to Cajal body / scaRNA localization to Cajal body / positive regulation of telomerase RNA localization to Cajal body / tubulin complex assembly / chaperonin-containing T-complex / : / BBSome-mediated cargo-targeting to cilium / Formation of tubulin folding intermediates by CCT/TriC / binding of sperm to zona pellucida / Folding of actin by CCT/TriC / Prefoldin mediated transfer of substrate to CCT/TriC / GTPase activating protein binding / RHOBTB1 GTPase cycle / WD40-repeat domain binding / natural killer cell mediated cytotoxicity / regulation of synapse organization / nuclear envelope lumen / pericentriolar material / Association of TriC/CCT with target proteins during biosynthesis / MHC class I protein binding / chaperone-mediated protein complex assembly / beta-tubulin binding / Hydrolases; Acting on acid anhydrides; In phosphorus-containing anhydrides / RHOBTB2 GTPase cycle / microtubule-based process / heterochromatin / intercellular bridge / spindle assembly / : / positive regulation of telomere maintenance via telomerase / protein folding chaperone / Loss of Nlp from mitotic centrosomes / Loss of proteins required for interphase microtubule organization from the centrosome / Recruitment of mitotic centrosome proteins and complexes / acrosomal vesicle / Gene and protein expression by JAK-STAT signaling after Interleukin-12 stimulation / Recruitment of NuMA to mitotic centrosomes / Anchoring of the basal body to the plasma membrane / AURKA Activation by TPX2 / mRNA 3'-UTR binding / cell projection / ATP-dependent protein folding chaperone / mRNA 5'-UTR binding / structural constituent of cytoskeleton / response to virus / microtubule cytoskeleton organization / cytoplasmic ribonucleoprotein granule / mitotic spindle / azurophil granule lumen / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / Regulation of PLK1 Activity at G2/M Transition / unfolded protein binding / melanosome / G-protein beta-subunit binding / protein folding / mitotic cell cycle / microtubule cytoskeleton / cell body / secretory granule lumen / ficolin-1-rich granule lumen / Potential therapeutics for SARS / microtubule / cytoskeleton / protein stabilization / cilium / cadherin binding / membrane raft / protein domain specific binding / cell division / GTPase activity / ubiquitin protein ligase binding / centrosome / Neutrophil degranulation / GTP binding / protein-containing complex binding / structural molecule activity / Golgi apparatus / protein-containing complex / ATP hydrolysis activity / RNA binding / extracellular exosome / extracellular region / nucleoplasm / ATP binding / metal ion binding / identical protein binding / nucleus / cytosol / cytoplasm Similarity search - Function | ||||||||||||
| Biological species | Homo sapiens (human) | ||||||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.3 Å | ||||||||||||
Authors | Zhao Y / Frydman J / Chiu W | ||||||||||||
| Funding support | United States, 3 items
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Citation | Journal: Cell / Year: 2022Title: Structural visualization of the tubulin folding pathway directed by human chaperonin TRiC/CCT. Authors: Daniel Gestaut / Yanyan Zhao / Junsun Park / Boxue Ma / Alexander Leitner / Miranda Collier / Grigore Pintilie / Soung-Hun Roh / Wah Chiu / Judith Frydman / ![]() Abstract: The ATP-dependent ring-shaped chaperonin TRiC/CCT is essential for cellular proteostasis. To uncover why some eukaryotic proteins can only fold with TRiC assistance, we reconstituted the folding of ...The ATP-dependent ring-shaped chaperonin TRiC/CCT is essential for cellular proteostasis. To uncover why some eukaryotic proteins can only fold with TRiC assistance, we reconstituted the folding of β-tubulin using human prefoldin and TRiC. We find unstructured β-tubulin is delivered by prefoldin to the open TRiC chamber followed by ATP-dependent chamber closure. Cryo-EM resolves four near-atomic-resolution structures containing progressively folded β-tubulin intermediates within the closed TRiC chamber, culminating in native tubulin. This substrate folding pathway appears closely guided by site-specific interactions with conserved regions in the TRiC chamber. Initial electrostatic interactions between the TRiC interior wall and both the folded tubulin N domain and its C-terminal E-hook tail establish the native substrate topology, thus enabling C-domain folding. Intrinsically disordered CCT C termini within the chamber promote subsequent folding of tubulin's core and middle domains and GTP-binding. Thus, TRiC's chamber provides chemical and topological directives that shape the folding landscape of its obligate substrates. | ||||||||||||
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Structure visualization
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Downloads & links
-EMDB archive
| Map data | emd_26120.map.gz | 112.5 MB | EMDB map data format | |
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| Header (meta data) | emd-26120-v30.xml emd-26120.xml | 28.5 KB 28.5 KB | Display Display | EMDB header |
| Images | emd_26120.png | 111.3 KB | ||
| Filedesc metadata | emd-26120.cif.gz | 9.4 KB | ||
| Others | emd_26120_additional_1.map.gz | 98.3 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-26120 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-26120 | HTTPS FTP |
-Validation report
| Summary document | emd_26120_validation.pdf.gz | 666.2 KB | Display | EMDB validaton report |
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| Full document | emd_26120_full_validation.pdf.gz | 665.8 KB | Display | |
| Data in XML | emd_26120_validation.xml.gz | 6.7 KB | Display | |
| Data in CIF | emd_26120_validation.cif.gz | 7.7 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-26120 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-26120 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 7ttnMC ![]() 7trgC ![]() 7tttC ![]() 7tubC ![]() 7wu7C M: atomic model generated by this map C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_26120.map.gz / Format: CCP4 / Size: 125 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Annotation | sharpened map of tubulin intermediate in closed TRiC | ||||||||||||||||||||||||||||||||||||
| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.1 Å | ||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
-Additional map: unsharpened map of tubulin intermediate in closed TRiC
| File | emd_26120_additional_1.map | ||||||||||||
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| Annotation | unsharpened map of tubulin intermediate in closed TRiC | ||||||||||||
| Projections & Slices |
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| Density Histograms |
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Sample components
+Entire : Closed form human TRiC in complex with beta-tubulin under ATP/AlF...
+Supramolecule #1: Closed form human TRiC in complex with beta-tubulin under ATP/AlF...
+Macromolecule #1: Tubulin beta chain
+Macromolecule #2: T-complex protein 1 subunit theta
+Macromolecule #3: T-complex protein 1 subunit eta
+Macromolecule #4: T-complex protein 1 subunit epsilon
+Macromolecule #5: T-complex protein 1 subunit beta
+Macromolecule #6: T-complex protein 1 subunit delta
+Macromolecule #7: T-complex protein 1 subunit alpha
+Macromolecule #8: T-complex protein 1 subunit gamma
+Macromolecule #9: T-complex protein 1 subunit zeta
+Macromolecule #10: ALUMINUM FLUORIDE
+Macromolecule #11: MAGNESIUM ION
+Macromolecule #12: ADENOSINE-5'-DIPHOSPHATE
+Macromolecule #13: water
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Concentration | 1 mg/mL | ||||||||||||||||||||||||
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| Buffer | pH: 7.4 Component:
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| Grid | Model: Quantifoil R1.2/1.3 / Support film - Material: CARBON / Support film - topology: HOLEY | ||||||||||||||||||||||||
| Vitrification | Cryogen name: ETHANE |
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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 / Average electron dose: 1.21 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 3.0 µm / Nominal defocus min: 0.5 µm |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
| Startup model | Type of model: NONE |
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| Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 42804 |
| Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
| Final angle assignment | Type: MAXIMUM LIKELIHOOD |
-Atomic model buiding 1
| Refinement | Space: REAL / Protocol: RIGID BODY FIT |
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| Output model | ![]() PDB-7ttn: |
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About Yorodumi




Keywords
Homo sapiens (human)
Authors
United States, 3 items
Citation

























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Y (Row.)
Z (Col.)




























Trichoplusia ni (cabbage looper)


FIELD EMISSION GUN
