6KS8

TRiC at 0.1 mM ADP-AlFx, Conformation 4, 0.1-C4

  • Classification: CHAPERONE
  • Organism(s): Saccharomyces cerevisiae S288C
  • Mutation(s): No 

  • Deposited: 2019-08-23 Released: 2019-09-18 
  • Deposition Author(s): Jin, M., Cong, Y.
  • Funding Organization(s): National Basic Research Program of China(973 Program), National Natural Science Foundation of China

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.69 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

An ensemble of cryo-EM structures of TRiC reveal its conformational landscape and subunit specificity.

Jin, M.Han, W.Liu, C.Zang, Y.Li, J.Wang, F.Wang, Y.Cong, Y.

(2019) Proc Natl Acad Sci U S A 116: 19513-19522

  • DOI: 10.1073/pnas.1903976116
  • Primary Citation of Related Structures:  
    6KS7, 6KS6, 6KS8, 6KRE, 6KRD

  • PubMed 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-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 ...

    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.


    Organizational Affiliation

    Shanghai Science Research Center, Chinese Academy of Sciences, Shanghai 201210, China.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit alphaB [auth A], A [auth a]559Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: TCP1CCT1YDR212WYD8142.13YD8142B.04
UniProt
Find proteins for P12612 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit betaD [auth B], C [auth b]527Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: CCT2BIN3TCP2YIL142W
UniProt
Find proteins for P39076 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit deltaF [auth D], E [auth d]528Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: CCT4ANC2TCP4YDL143W
UniProt
Find proteins for P39078 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit epsilonH [auth E], G [auth e]562Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: CCT5TCP5YJR064WJ1752
UniProt
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
fusion protein of T-complex protein 1 subunit gamma, rep-His-CBP and T-complex protein 1 subunit gammaJ [auth G], I [auth g]594Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: CCT3BIN2TCP3YJL014WJ1336
UniProt
Find proteins for P39077 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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  • Reference Sequence
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit etaL [auth H], K [auth h]550Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: CCT7YJL111WJ0804
UniProt
Find proteins for P42943 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit thetaN [auth Q], M [auth q]568Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: CCT8YJL008CJ1374
UniProt
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit zetaP [auth Z], O [auth z]546Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: CCT6TCP20TCP6YDR188WYD9395.21
UniProt
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.69 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report




Entry History & Funding Information

Deposition Data

  • Deposited Date: 2019-08-23 
  • Released Date: 2019-09-18 
  • Deposition Author(s): Jin, M., Cong, Y.

Funding OrganizationLocationGrant Number
National Basic Research Program of China(973 Program)China2017YFA0503503
National Natural Science Foundation of ChinaChina31670754
National Natural Science Foundation of ChinaChina31872714
National Natural Science Foundation of ChinaChina31861143028

Revision History  (Full details and data files)

  • Version 1.0: 2019-09-18
    Type: Initial release
  • Version 1.1: 2019-10-09
    Changes: Data collection, Database references
  • Version 1.2: 2019-11-06
    Changes: Data collection, Other