6EMK

Cryo-EM Structure of Saccharomyces cerevisiae Target of Rapamycin Complex 2


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 7.90 Å
  • Resolution: 8.00 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

Cryo-EM structure of Saccharomyces cerevisiae target of rapamycin complex 2.

Karuppasamy, M.Kusmider, B.Oliveira, T.M.Gaubitz, C.Prouteau, M.Loewith, R.Schaffitzel, C.

(2017) Nat Commun 8: 1729-1729

  • DOI: 10.1038/s41467-017-01862-0
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The target of rapamycin (TOR) kinase assembles into two distinct multiprotein complexes, conserved across eukaryote evolution. In contrast to TOR complex 1 (TORC1), TORC2 kinase activity is not inhibited by the macrolide rapamycin. Here, we present t ...

    The target of rapamycin (TOR) kinase assembles into two distinct multiprotein complexes, conserved across eukaryote evolution. In contrast to TOR complex 1 (TORC1), TORC2 kinase activity is not inhibited by the macrolide rapamycin. Here, we present the structure of Saccharomyces cerevisiae TORC2 determined by electron cryo-microscopy. TORC2 contains six subunits assembling into a 1.4 MDa rhombohedron. Tor2 and Lst8 form the common core of both TOR complexes. Avo3/Rictor is unique to TORC2, but interacts with the same HEAT repeats of Tor2 that are engaged by Kog1/Raptor in mammalian TORC1, explaining the mutual exclusivity of these two proteins. Density, which we conclude is Avo3, occludes the FKBP12-rapamycin-binding site of Tor2's FRB domain rendering TORC2 rapamycin insensitive and recessing the kinase active site. Although mobile, Avo1/hSin1 further restricts access to the active site as its conserved-region-in-the-middle (CRIM) domain is positioned along an edge of the TORC2 active-site-cleft, consistent with a role for CRIM in substrate recruitment.


    Related Citations: 
    • Molecular Basis of the Rapamycin Insensitivity of Target Of Rapamycin Complex 2.
      Gaubitz, C., Oliveira, T.M., Prouteau, M., Leitner, A., Karuppasamy, M., Konstantinidou, G., Rispal, D., Eltschinger, S., Robinson, G.C., Thore, S., Aebersold, R., Schaffitzel, C., Loewith, R.
      (2015) Mol Cell 58: 977

    Organizational Affiliation

    School of Biochemistry, University of Bristol, University Walk, Bristol, BS8 1TD, UK. christiane.berger-schaffitzel@bristol.ac.uk.



Macromolecules

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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Target of rapamycin complex 2 subunit TSC11E, F303Saccharomyces cerevisiae S288CMutation(s): 0 
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  • Reference Sequence

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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Target of rapamycin complex 2 subunit AVO2G, H426Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: AVO2YMR068WYM9916.07
Find proteins for Q04749 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Go to UniProtKB:  Q04749
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  • Reference Sequence

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Serine/threonine-protein kinase TOR2A, C2474Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: TOR2DRR2TSC14YKL203C
EC: 2.7.1.67 (PDB Primary Data), 2.7.11.1 (PDB Primary Data)
Find proteins for P32600 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Go to UniProtKB:  P32600
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Target of rapamycin complex subunit LST8B, D303Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: LST8YNL006WN2005
Find proteins for P41318 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Go to UniProtKB:  P41318
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  • Reference Sequence

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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
Target of rapamycin complex 2 subunit AVO1I, J1176Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: AVO1YOL078WO1110
Find proteins for Q08236 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore Q08236 
Go to UniProtKB:  Q08236
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 7.90 Å
  • Resolution: 8.00 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Swiss National Science FoundationFNS 31003A_160023
Sinergia grantCRSII3_136254
European Research CouncilTORCH 614552
European Research CouncilStarting Grant, No 281331

Revision History 

  • Version 1.0: 2017-12-06
    Type: Initial release
  • Version 1.1: 2018-10-17
    Changes: Data collection, Refinement description
  • Version 1.2: 2019-12-11
    Changes: Other