6NR9

hTRiC-hPFD Class5


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

The Chaperonin TRiC/CCT Associates with Prefoldin through a Conserved Electrostatic Interface Essential for Cellular Proteostasis.

Gestaut, D.Roh, S.H.Ma, B.Pintilie, G.Joachimiak, L.A.Leitner, A.Walzthoeni, T.Aebersold, R.Chiu, W.Frydman, J.

(2019) Cell 177: 751-765.e15

  • DOI: https://doi.org/10.1016/j.cell.2019.03.012
  • Primary Citation of Related Structures:  
    6NR8, 6NR9, 6NRA, 6NRB, 6NRC, 6NRD

  • PubMed Abstract: 

    Maintaining proteostasis in eukaryotic protein folding involves cooperation of distinct chaperone systems. To understand how the essential ring-shaped chaperonin TRiC/CCT cooperates with the chaperone prefoldin/GIMc (PFD), we integrate cryoelectron microscopy (cryo-EM), crosslinking-mass-spectrometry and biochemical and cellular approaches to elucidate the structural and functional interplay between TRiC/CCT and PFD. We find these hetero-oligomeric chaperones associate in a defined architecture, through a conserved interface of electrostatic contacts that serves as a pivot point for a TRiC-PFD conformational cycle. PFD alternates between an open "latched" conformation and a closed "engaged" conformation that aligns the PFD-TRiC substrate binding chambers. PFD can act after TRiC bound its substrates to enhance the rate and yield of the folding reaction, suppressing non-productive reaction cycles. Disrupting the TRiC-PFD interaction in vivo is strongly deleterious, leading to accumulation of amyloid aggregates. The supra-chaperone assembly formed by PFD and TRiC is essential to prevent toxic conformations and ensure effective cellular proteostasis.


  • Organizational Affiliation

    Department of Biology and Genetics, Stanford University, Stanford, CA 94305, USA.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
T-complex protein 1 subunit alpha
A, I
534Homo sapiensMutation(s): 0 
Gene Names: TCP1CCT1CCTA
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PHAROS:  P17987
GTEx:  ENSG00000120438 
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UniProt GroupP17987
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
T-complex protein 1 subunit beta
B, J
509Homo sapiensMutation(s): 0 
Gene Names: CCT299D8.1CCTB
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GTEx:  ENSG00000166226 
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
T-complex protein 1 subunit gamma
C, K
513Homo sapiensMutation(s): 0 
Gene Names: CCT3CCTGTRIC5
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GTEx:  ENSG00000163468 
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UniProt GroupP49368
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
T-complex protein 1 subunit delta
D, L
514Homo sapiensMutation(s): 0 
Gene Names: CCT4CCTDSRB
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GTEx:  ENSG00000115484 
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
T-complex protein 1 subunit epsilon
E, M
517Homo sapiensMutation(s): 0 
Gene Names: CCT5CCTEKIAA0098
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GTEx:  ENSG00000150753 
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
T-complex protein 1 subunit zeta
F, N
515Homo sapiensMutation(s): 0 
Gene Names: CCT6ACCT6CCTZ
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GTEx:  ENSG00000146731 
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Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
T-complex protein 1 subunit eta
G, O
514Homo sapiensMutation(s): 0 
Gene Names: CCT7CCTHNIP7-1
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GTEx:  ENSG00000135624 
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Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
T-complex protein 1 subunit theta
H, P
514Homo sapiensMutation(s): 0 
Gene Names: CCT8C21orf112CCTQKIAA0002
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GTEx:  ENSG00000156261 
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Entity ID: 9
MoleculeChains Sequence LengthOrganismDetailsImage
Prefoldin subunit 1Q [auth 1]107Homo sapiensMutation(s): 0 
Gene Names: PFDN1PFD1
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GTEx:  ENSG00000113068 
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Entity ID: 10
MoleculeChains Sequence LengthOrganismDetailsImage
Prefoldin subunit 2R [auth 2]103Homo sapiensMutation(s): 0 
Gene Names: PFDN2PFD2HSPC231
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GTEx:  ENSG00000143256 
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UniProt GroupQ9UHV9
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Entity ID: 11
MoleculeChains Sequence LengthOrganismDetailsImage
Prefoldin subunit 3S [auth 3]132Homo sapiensMutation(s): 0 
Gene Names: VBP1PFDN3
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GTEx:  ENSG00000155959 
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Entity ID: 12
MoleculeChains Sequence LengthOrganismDetailsImage
Prefoldin subunit 4T [auth 4]104Homo sapiensMutation(s): 0 
Gene Names: PFDN4PFD4
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GTEx:  ENSG00000101132 
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Entity ID: 13
MoleculeChains Sequence LengthOrganismDetailsImage
Prefoldin subunit 5U [auth 5]127Homo sapiensMutation(s): 0 
Gene Names: PFDN5MM1PFD5
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Entity ID: 14
MoleculeChains Sequence LengthOrganismDetailsImage
Prefoldin subunit 6V [auth 6]102Homo sapiensMutation(s): 0 
Gene Names: PFDN6HKE2PFD6
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GTEx:  ENSG00000204220 
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)United StatesR01GM074074
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)United StatesF32GM103124
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)United StatesP41GM103832
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)United StatesR01GM079429
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)United StatesP01NS092525
European Research Council (ERC)European UnionAdvG #233226
European Research Council (ERC)European UnionAdvG #670821

Revision History  (Full details and data files)

  • Version 1.0: 2019-06-19
    Type: Initial release
  • Version 1.1: 2019-12-18
    Changes: Author supporting evidence