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 1.1 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 Rap ...

    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
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit alphaAa556Homo sapiensMutation(s): 0 
Gene Names: TCP1CCT1CCTA
Find proteins for P17987 (Homo sapiens)
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PHAROS  P17987
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit epsilonEe541Homo sapiensMutation(s): 0 
Gene Names: CCT5CCTEKIAA0098
Find proteins for P48643 (Homo sapiens)
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PHAROS  P48643
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit betaBb535Homo sapiensMutation(s): 0 
Gene Names: CCT299D8.1CCTB
Find proteins for P78371 (Homo sapiens)
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PHAROS  P78371
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit deltaDd539Homo sapiensMutation(s): 0 
Gene Names: CCT4CCTDSRB
Find proteins for P50991 (Homo sapiens)
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PHAROS  P50991
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  • Reference Sequence
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit gammaGg544Homo sapiensMutation(s): 0 
Gene Names: CCT3CCTGTRIC5
Find proteins for P49368 (Homo sapiens)
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PHAROS  P49368
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  • Reference Sequence
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit etaHh543Homo sapiensMutation(s): 0 
Gene Names: CCT7CCTHNIP7-1
Find proteins for Q99832 (Homo sapiens)
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PHAROS  Q99832
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  • Reference Sequence
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit thetaQq548Homo sapiensMutation(s): 0 
Gene Names: CCT8C21orf112CCTQKIAA0002
Find proteins for P50990 (Homo sapiens)
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PHAROS  P50990
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit zetaZz531Homo sapiensMutation(s): 0 
Gene Names: CCT6ACCT6CCTZ
Find proteins for P40227 (Homo sapiens)
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PHAROS  P40227
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP

Download CCD File 
Q, 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



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Human Genome Research InstituteUnited StatesEY012287
Spanish Ministry of Science, Innovation, and UniversitiesSpainBFU2016-75984
SpainS2013/MIT2807

Revision History 

  • Version 1.0: 2019-07-03
    Type: Initial release
  • Version 1.1: 2019-07-10
    Changes: Data collection, Database references