6NRB

hTRiC-hPFD Class2


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.70 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: 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 ...

    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. Electronic address: jfrydman@stanford.edu.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit alphaA, I534Homo sapiensMutation(s): 0 
Gene Names: TCP1CCT1CCTA
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UniProt GroupP17987
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit betaB, J509Homo sapiensMutation(s): 0 
Gene Names: CCT299D8.1CCTB
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit gammaC, K513Homo sapiensMutation(s): 0 
Gene Names: CCT3CCTGTRIC5
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit deltaD, L514Homo sapiensMutation(s): 0 
Gene Names: CCT4CCTDSRB
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit epsilonE, M517Homo sapiensMutation(s): 0 
Gene Names: CCT5CCTEKIAA0098
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit zetaF, N515Homo sapiensMutation(s): 0 
Gene Names: CCT6ACCT6CCTZ
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit etaG, O514Homo sapiensMutation(s): 0 
Gene Names: CCT7CCTHNIP7-1
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit thetaH, P514Homo sapiensMutation(s): 0 
Gene Names: CCT8C21orf112CCTQKIAA0002
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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetailsImage
Prefoldin subunit 1Q [auth 1]107Homo sapiensMutation(s): 0 
Gene Names: PFDN1PFD1
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Entity ID: 10
MoleculeChainsSequence LengthOrganismDetailsImage
Prefoldin subunit 2R [auth 2]103Homo sapiensMutation(s): 0 
Gene Names: PFDN2PFD2HSPC231
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Entity ID: 11
MoleculeChainsSequence LengthOrganismDetailsImage
Prefoldin subunit 3S [auth 3]132Homo sapiensMutation(s): 0 
Gene Names: VBP1PFDN3
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Entity ID: 12
MoleculeChainsSequence LengthOrganismDetailsImage
Prefoldin subunit 4T [auth 4]104Homo sapiensMutation(s): 0 
Gene Names: PFDN4PFD4
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Entity ID: 13
MoleculeChainsSequence LengthOrganismDetailsImage
Prefoldin subunit 5U [auth 5]127Homo sapiensMutation(s): 0 
Gene Names: PFDN5MM1PFD5
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Entity ID: 14
MoleculeChainsSequence LengthOrganismDetailsImage
Prefoldin subunit 6V [auth 6]102Homo sapiensMutation(s): 0 
Gene Names: PFDN6HKE2PFD6
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.70 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