+
Open data
-
Basic information
Entry | Database: PDB / ID: 6ks8 | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Title | TRiC at 0.1 mM ADP-AlFx, Conformation 4, 0.1-C4 | |||||||||||||||
![]() |
| |||||||||||||||
![]() | CHAPERONE / Chaperonin TRiC/CCT / Allosteric network / ATPase cycle / Conformational landscape / Cryo-EM | |||||||||||||||
Function / homology | ![]() Association of TriC/CCT with target proteins during biosynthesis / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / chaperone mediated protein folding independent of cofactor / chaperonin-containing T-complex / Neutrophil degranulation / ATP-dependent protein folding chaperone / unfolded protein binding / protein folding / ATP hydrolysis activity / ATP binding ...Association of TriC/CCT with target proteins during biosynthesis / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / chaperone mediated protein folding independent of cofactor / chaperonin-containing T-complex / Neutrophil degranulation / ATP-dependent protein folding chaperone / unfolded protein binding / protein folding / ATP hydrolysis activity / ATP binding / plasma membrane / cytoplasm Similarity search - Function | |||||||||||||||
Biological species | ![]() ![]() | |||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.69 Å | |||||||||||||||
![]() | Jin, M. / Cong, Y. | |||||||||||||||
Funding support | ![]()
| |||||||||||||||
![]() | ![]() Title: An ensemble of cryo-EM structures of TRiC reveal its conformational landscape and subunit specificity. Authors: Mingliang Jin / Wenyu Han / Caixuan Liu / Yunxiang Zang / Jiawei Li / Fangfang Wang / Yanxing Wang / Yao Cong / ![]() Abstract: TRiC/CCT assists the folding of ∼10% of cytosolic proteins through an ATP-driven conformational cycle and is essential in maintaining protein homeostasis. Here, we determined an ensemble of cryo- ...TRiC/CCT assists the folding of ∼10% of cytosolic proteins through an ATP-driven conformational cycle and is essential in maintaining protein homeostasis. Here, we determined an ensemble of cryo-electron microscopy (cryo-EM) structures of yeast TRiC at various nucleotide concentrations, with 4 open-state maps resolved at near-atomic resolutions, and a closed-state map at atomic resolution, revealing an extra layer of an unforeseen N-terminal allosteric network. We found that, during TRiC ring closure, the CCT7 subunit moves first, responding to nucleotide binding; CCT4 is the last to bind ATP, serving as an ATP sensor; and CCT8 remains ADP-bound and is hardly involved in the ATPase-cycle in our experimental conditions; overall, yeast TRiC consumes nucleotide in a 2-ring positively coordinated manner. Our results depict a thorough picture of the TRiC conformational landscape and its allosteric transitions from the open to closed states in more structural detail and offer insights into TRiC subunit specificity in ATP consumption and ring closure, and potentially in substrate processing. | |||||||||||||||
History |
|
-
Structure visualization
Movie |
![]() |
---|---|
Structure viewer | Molecule: ![]() ![]() |
-
Downloads & links
-
Download
PDBx/mmCIF format | ![]() | 1.3 MB | Display | ![]() |
---|---|---|---|---|
PDB format | ![]() | 1.1 MB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
---|
-Related structure data
Related structure data | ![]() 0760MC ![]() 0756C ![]() 0757C ![]() 0758C ![]() 0759C ![]() 0761C ![]() 0762C ![]() 0763C ![]() 0764C ![]() 0765C ![]() 0766C ![]() 0767C ![]() 6krdC ![]() 6kreC ![]() 6ks6C ![]() 6ks7C C: citing same article ( M: map data used to model this data |
---|---|
Similar structure data |
-
Links
-
Assembly
Deposited unit | ![]()
|
---|---|
1 |
|
-
Components
-T-complex protein 1 subunit ... , 7 types, 14 molecules aAbBdDeEhHqQzZ
#1: Protein | Mass: 60557.566 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #2: Protein | Mass: 57276.254 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #3: Protein | Mass: 57682.410 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #4: Protein | Mass: 61995.004 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #6: Protein | Mass: 59802.438 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #7: Protein | Mass: 61735.102 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #8: Protein | Mass: 59997.559 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
---|
-Protein , 1 types, 2 molecules gG
#5: Protein | Mass: 65423.387 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
---|
-Details
Sequence details | Authors state that rep-His-CBP tag is added between PRO g/G 374 and LYS gG 435 for CCT3 subunit. |
---|
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
---|---|
EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-
Sample preparation
Component | Name: TRiC complex / Type: COMPLEX / Details: TRiC complex at 0.1 mM ADP-AlFx / Entity ID: all / Source: NATURAL |
---|---|
Molecular weight | Value: 0.96 MDa / Experimental value: NO |
Source (natural) | Organism: ![]() ![]() |
Buffer solution | pH: 7.5 |
Specimen | Conc.: 1 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
-
Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
---|---|
Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 38 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
-
Processing
Software | Name: PHENIX / Version: 1.10_2155: / Classification: refinement | ||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CTF correction | Type: NONE | ||||||||||||||||||||||||
3D reconstruction | Resolution: 4.69 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 53539 / Symmetry type: POINT | ||||||||||||||||||||||||
Refine LS restraints |
|