6QB8

Human CCT:mLST8 complex

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.97 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

Structural and functional analysis of the role of the chaperonin CCT in mTOR complex assembly.

Cuellar, J., Ludlam, W.G., Tensmeyer, N.C., Aoba, T., Dhavale, M., Santiago, C., Bueno-Carrasco, M.T., Mann, M.J., Plimpton, R.L., Makaju, A., Franklin, S., Willardson, B.M., Valpuesta, J.M.

(2019) Nat Commun 10: 2865-2865

  • DOI: 10.1038/s41467-019-10781-1
  • Primary Citation of Related Structures:  
    6QB8

  • PubMed Abstract: 

    • The mechanistic target of rapamycin (mTOR) kinase forms two multi-protein signaling complexes, mTORC1 and mTORC2, which are master regulators of cell growth, metabolism, survival and autophagy. Two of the subunits of these complexes are mLST8 and Raptor, β-propeller proteins that stabilize the mTOR kinase and recruit substrates, respectively ...

    The mechanistic target of rapamycin (mTOR) kinase forms two multi-protein signaling complexes, mTORC1 and mTORC2, which are master regulators of cell growth, metabolism, survival and autophagy. Two of the subunits of these complexes are mLST8 and Raptor, β-propeller proteins that stabilize the mTOR kinase and recruit substrates, respectively. Here we report that the eukaryotic chaperonin CCT plays a key role in mTORC assembly and signaling by folding both mLST8 and Raptor. A high resolution (4.0 Å) cryo-EM structure of the human mLST8-CCT intermediate isolated directly from cells shows mLST8 in a near-native state bound to CCT deep within the folding chamber between the two CCT rings, and interacting mainly with the disordered N- and C-termini of specific CCT subunits of both rings. These findings describe a unique function of CCT in mTORC assembly and a distinct binding site in CCT for mLST8, far from those found for similar β-propeller proteins.

    Organizational Affiliation: 

    Centro Nacional de Biotecnología, Campus de la Universidad Autónoma de Madrid, 28049, Madrid, Spain. jmv@cnb.csic.es.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit alphaI [auth A],
A [auth a]		556Homo sapiensMutation(s): 0 
Gene Names: TCP1, CCT1, CCTA
UniProt & NIH Common Fund Data Resources
Find proteins for P17987 (Homo sapiens)
Explore P17987 
Go to UniProtKB:  P17987
PHAROS:  P17987
GTEx:  ENSG00000120438 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP17987
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit betaJ [auth B],
B [auth b]		535Homo sapiensMutation(s): 0 
Gene Names: CCT2, 99D8.1, CCTB
UniProt & NIH Common Fund Data Resources
Find proteins for P78371 (Homo sapiens)
Explore P78371 
Go to UniProtKB:  P78371
PHAROS:  P78371
GTEx:  ENSG00000166226 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP78371
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit deltaK [auth D],
C [auth d]		539Homo sapiensMutation(s): 0 
Gene Names: CCT4, CCTD, SRB
UniProt & NIH Common Fund Data Resources
Find proteins for P50991 (Homo sapiens)
Explore P50991 
Go to UniProtKB:  P50991
PHAROS:  P50991
GTEx:  ENSG00000115484 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP50991
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit epsilonL [auth E],
D [auth e]		541Homo sapiensMutation(s): 0 
Gene Names: CCT5, CCTE, KIAA0098
UniProt & NIH Common Fund Data Resources
Find proteins for P48643 (Homo sapiens)
Explore P48643 
Go to UniProtKB:  P48643
PHAROS:  P48643
GTEx:  ENSG00000150753 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP48643
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit gammaM [auth G],
E [auth g]		544Homo sapiensMutation(s): 0 
Gene Names: CCT3, CCTG, TRIC5
UniProt & NIH Common Fund Data Resources
Find proteins for P49368 (Homo sapiens)
Explore P49368 
Go to UniProtKB:  P49368
PHAROS:  P49368
GTEx:  ENSG00000163468 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP49368
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit etaN [auth H],
F [auth h]		543Homo sapiensMutation(s): 0 
Gene Names: CCT7, CCTH, NIP7-1
UniProt & NIH Common Fund Data Resources
Find proteins for Q99832 (Homo sapiens)
Explore Q99832 
Go to UniProtKB:  Q99832
PHAROS:  Q99832
GTEx:  ENSG00000135624 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ99832
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit thetaO [auth Q],
G [auth q]		548Homo sapiensMutation(s): 0 
Gene Names: CCT8, C21orf112, CCTQ, KIAA0002
UniProt & NIH Common Fund Data Resources
Find proteins for P50990 (Homo sapiens)
Explore P50990 
Go to UniProtKB:  P50990
PHAROS:  P50990
GTEx:  ENSG00000156261 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP50990
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit zetaP [auth Z],
H [auth z]		531Homo sapiensMutation(s): 0 
Gene Names: CCT6A, CCT6, CCTZ
UniProt & NIH Common Fund Data Resources
Find proteins for P40227 (Homo sapiens)
Explore P40227 
Go to UniProtKB:  P40227
PHAROS:  P40227
GTEx:  ENSG00000146731 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP40227
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP
Download Ideal Coordinates CCD File 
Q [auth q],
R [auth Q]		ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.97 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



View more in-depth experimental data

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)United StatesEY012287
Spanish Ministry of Science, Innovation, and UniversitiesSpainBFU2016-75984
SpainS2013/MIT2807

Revision History  (Full details and data files)

  • Version 1.0: 2019-07-03
    Type: Initial release
  • Version 1.1: 2019-07-10
    Changes: Data collection, Database references
  • Version 1.2: 2022-03-30
    Changes: Author supporting evidence, Database references