7F4U

Cryo-EM structure of TELO2-TTI1-TTI2 complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


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Literature

Structure of the Human TELO2-TTI1-TTI2 Complex.

Kim, Y.Park, J.Joo, S.Y.Kim, B.G.Jo, A.Lee, H.Cho, Y.

(2022) J Mol Biol 434: 167370-167370

  • DOI: 10.1016/j.jmb.2021.167370
  • Primary Citation of Related Structures:  
    7F4U

  • PubMed Abstract: 
  • Phosphatidylinositol 3-kinase-related protein kinases (PIKKs) play critical roles in various metabolic pathways related to cell proliferation and survival. The TELO2-TTI1-TTI2 (TTT) complex has been proposed to recognize newly synthesized PIKKs and to deliver them to the R2TP complex (RUVBL1-RUVBL2-RPAP3-PIH1D1) and the heat shock protein 90 chaperone, thereby supporting their folding and assembly ...

    Phosphatidylinositol 3-kinase-related protein kinases (PIKKs) play critical roles in various metabolic pathways related to cell proliferation and survival. The TELO2-TTI1-TTI2 (TTT) complex has been proposed to recognize newly synthesized PIKKs and to deliver them to the R2TP complex (RUVBL1-RUVBL2-RPAP3-PIH1D1) and the heat shock protein 90 chaperone, thereby supporting their folding and assembly. Here, we determined the cryo-EM structure of the TTT complex at an average resolution of 4.2 Å. We describe the full-length structures of TTI1 and TELO2, and a partial structure of TTI2. All three proteins form elongated helical repeat structures. TTI1 provides a platform on which TELO2 and TTI2 bind to its central region and C-terminal end, respectively. The TELO2 C-terminal domain (CTD) is required for the interaction with TTI1 and recruitment of Ataxia-telangiectasia mutated (ATM). The N- and C-terminal segments of TTI1 recognize the FRAP-ATM-TRRAP (FAT) domain and the N-terminal HEAT repeats of ATM, respectively. The TELO2 CTD and TTI1 N- and C-terminal segments are required for cell survival in response to ionizing radiation.


    Organizational Affiliation

    Department of Life Science, Pohang University of Science and Technology, Pohang 37673, South Korea. Electronic address: yunje@postech.ac.kr.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Telomere length regulation protein TEL2 homologA837Homo sapiensMutation(s): 0 
Gene Names: TELO2KIAA0683
UniProt & NIH Common Fund Data Resources
Find proteins for Q9Y4R8 (Homo sapiens)
Explore Q9Y4R8 
Go to UniProtKB:  Q9Y4R8
PHAROS:  Q9Y4R8
Entity Groups  
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UniProt GroupQ9Y4R8
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
TELO2-interacting protein 1 homologB1095Homo sapiensMutation(s): 0 
Gene Names: TTI1KIAA0406SMG10
UniProt & NIH Common Fund Data Resources
Find proteins for O43156 (Homo sapiens)
Explore O43156 
Go to UniProtKB:  O43156
PHAROS:  O43156
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UniProt GroupO43156
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
TELO2-interacting protein 2C508Homo sapiensMutation(s): 0 
Gene Names: TTI2C8orf41
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data

  • Deposited Date: 2021-06-21 
  • Released Date: 2022-06-22 
  • Deposition Author(s): Cho, Y., Kim, Y.

Funding OrganizationLocationGrant Number
National Research Foundation (NRF, Korea)Korea, Republic Of--

Revision History  (Full details and data files)

  • Version 1.0: 2022-06-22
    Type: Initial release