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 Raptor, ...

    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 alpha A, a556Homo sapiensMutation(s): 0 
Gene Names: TCP1, CCT1, CCTA
Find proteins for P17987 (Homo sapiens)
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PHAROS:  P17987
GTEx:  ENSG00000120438
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit beta B, b535Homo sapiensMutation(s): 0 
Gene Names: CCT2, 99D8.1, CCTB
Find proteins for P78371 (Homo sapiens)
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GTEx:  ENSG00000166226
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit delta D, d539Homo sapiensMutation(s): 0 
Gene Names: CCT4, CCTD, SRB
Find proteins for P50991 (Homo sapiens)
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PHAROS:  P50991
GTEx:  ENSG00000115484
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit epsilon E, e541Homo sapiensMutation(s): 0 
Gene Names: CCT5, CCTE, KIAA0098
Find proteins for P48643 (Homo sapiens)
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GTEx:  ENSG00000150753
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit gamma G, g544Homo sapiensMutation(s): 0 
Gene Names: CCT3, CCTG, TRIC5
Find proteins for P49368 (Homo sapiens)
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GTEx:  ENSG00000163468
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit eta H, h543Homo sapiensMutation(s): 0 
Gene Names: CCT7, CCTH, NIP7-1
Find proteins for Q99832 (Homo sapiens)
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GTEx:  ENSG00000135624
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit theta Q, q548Homo sapiensMutation(s): 0 
Gene Names: CCT8, C21orf112, CCTQ, KIAA0002
Find proteins for P50990 (Homo sapiens)
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GTEx:  ENSG00000156261
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
T-complex protein 1 subunit zeta Z, z531Homo sapiensMutation(s): 0 
Gene Names: CCT6A, CCT6, CCTZ
Find proteins for P40227 (Homo sapiens)
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GTEx:  ENSG00000146731
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Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP
Download Ideal Coordinates 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

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View more in-depth experimental data

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