Biological Assembly 1  

 3D View: Structure

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Hetero 16-mer - A2B2C2D2E2F2G2H2 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 16-mer - A12B3C1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 903.01 kDa 
• Atom Count: 62802 
• Residue Count: 8221 
• Unique protein chains: 8

6NRA

hTRiC-hPFD Class1 (No PFD)

• DOI: 10.2210/pdb6NRA/pdb
• EMDataResource: EMD-0492

• Classification: CHAPERONE
• Organism(s): Homo sapiens
• Expression System: Insect cell expression vector pTIE1
• Mutation(s): No 


• Deposited: 2019-01-23 Released: 2019-06-19 
• Deposition Author(s): Gestaut, D.R., Roh, S.H., Ma, B., Pintilie, G., Joachimiak, L.A., Leitner, A., Walzthoeni, T., Aebersold, R., Chiu, W., Frydman, J.
• Funding Organization(s): National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI), European Research Council (ERC)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 7.70 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

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

• PubMed: 30955883 
• DOI: 10.1016/j.cell.2019.03.012
• Primary Citation of Related Structures:  
  6NR9, 6NR8, 6NRC, 6NRB, 6NRD, 6NRA


• 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.

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Organizational Affiliation: 

Department of Biology and Genetics, Stanford University, Stanford, CA 94305, USA. Electronic address: [e-mail].

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
T-complex protein 1 subunit alpha	A, I	534	Homo sapiens	Mutation(s): 0  Gene Names: TCP1, CCT1, CCTA
Find proteins for P17987 (Homo sapiens) Explore P17987  Go to UniProtKB:  P17987
NIH Common Fund Data Resources
PHAROS:  P17987 GTEx:  ENSG00000120438

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
T-complex protein 1 subunit beta	B, J	509	Homo sapiens	Mutation(s): 0  Gene Names: CCT2, 99D8.1, CCTB
Find proteins for P78371 (Homo sapiens) Explore P78371  Go to UniProtKB:  P78371
NIH Common Fund Data Resources
PHAROS:  P78371 GTEx:  ENSG00000166226

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
T-complex protein 1 subunit gamma	C, K	513	Homo sapiens	Mutation(s): 0  Gene Names: CCT3, CCTG, TRIC5
Find proteins for P49368 (Homo sapiens) Explore P49368  Go to UniProtKB:  P49368
NIH Common Fund Data Resources
PHAROS:  P49368 GTEx:  ENSG00000163468

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
T-complex protein 1 subunit delta	D, L	514	Homo sapiens	Mutation(s): 0  Gene Names: CCT4, CCTD, SRB
Find proteins for P50991 (Homo sapiens) Explore P50991  Go to UniProtKB:  P50991
NIH Common Fund Data Resources
PHAROS:  P50991 GTEx:  ENSG00000115484

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
T-complex protein 1 subunit epsilon	E, M	517	Homo sapiens	Mutation(s): 0  Gene Names: CCT5, CCTE, KIAA0098
Find proteins for P48643 (Homo sapiens) Explore P48643  Go to UniProtKB:  P48643
NIH Common Fund Data Resources
PHAROS:  P48643 GTEx:  ENSG00000150753

Entity ID: 6
Molecule	Chains	Sequence Length	Organism	Details	Image
T-complex protein 1 subunit zeta	F, N	515	Homo sapiens	Mutation(s): 0  Gene Names: CCT6A, CCT6, CCTZ
Find proteins for P40227 (Homo sapiens) Explore P40227  Go to UniProtKB:  P40227
NIH Common Fund Data Resources
PHAROS:  P40227 GTEx:  ENSG00000146731

Entity ID: 7
Molecule	Chains	Sequence Length	Organism	Details	Image
T-complex protein 1 subunit eta	G, O	514	Homo sapiens	Mutation(s): 0  Gene Names: CCT7, CCTH, NIP7-1
Find proteins for Q99832 (Homo sapiens) Explore Q99832  Go to UniProtKB:  Q99832
NIH Common Fund Data Resources
PHAROS:  Q99832 GTEx:  ENSG00000135624

Entity ID: 8
Molecule	Chains	Sequence Length	Organism	Details	Image
T-complex protein 1 subunit theta	H, P	514	Homo sapiens	Mutation(s): 0  Gene Names: CCT8, C21orf112, CCTQ, KIAA0002
Find proteins for P50990 (Homo sapiens) Explore P50990  Go to UniProtKB:  P50990
NIH Common Fund Data Resources
PHAROS:  P50990 GTEx:  ENSG00000156261

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 7.70 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History & Funding Information

Deposition Data

• Deposited Date: 2019-01-23 
• Released Date: 2019-06-19 
Deposition Author(s): Gestaut, D.R., Roh, S.H., Ma, B., Pintilie, G., Joachimiak, L.A., Leitner, A., Walzthoeni, T., Aebersold, R., Chiu, W., Frydman, J.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)	United States	R01GM074074
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)	United States	F32GM103124
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)	United States	P41GM103832
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)	United States	R01GM079429
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)	United States	P01NS092525
European Research Council (ERC)	European Union	AdvG #233226
European Research Council (ERC)	European Union	AdvG #670821

Revision History 

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