3QLE

Structural Basis for the Function of Tim50 in the Mitochondrial Presequence Translocase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.83 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.176 

Starting Model: experimental
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This is version 1.3 of the entry. See complete history


Literature

Structural basis for the function of tim50 in the mitochondrial presequence translocase.

Qian, X.Gebert, M.Hopker, J.Yan, M.Li, J.Wiedemann, N.van der Laan, M.Pfanner, N.Sha, B.

(2011) J Mol Biol 411: 513-519

  • DOI: https://doi.org/10.1016/j.jmb.2011.06.020
  • Primary Citation of Related Structures:  
    3QLE

  • PubMed Abstract: 

    Many mitochondrial proteins are synthesized as preproteins carrying amino-terminal presequences in the cytosol. The preproteins are imported by the translocase of the outer mitochondrial membrane and the presequence translocase of the inner membrane. Tim50 and Tim23 transfer preproteins through the intermembrane space to the inner membrane. We report the crystal structure of the intermembrane space domain of yeast Tim50 to 1.83 Å resolution. A protruding β-hairpin of Tim50 is crucial for interaction with Tim23, providing a molecular basis for the cooperation of Tim50 and Tim23 in preprotein translocation to the protein-conducting channel of the mitochondrial inner membrane.


  • Organizational Affiliation

    Department of Cell Biology, University of Alabama at Birmingham, 1918 University Boulevard, Birmingham, AL 35294-0005, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Tim50p204Saccharomyces cerevisiae EC1118Mutation(s): 0 
Gene Names: EC1118_1P2_2410g
UniProt
Find proteins for C8ZIW7 (Saccharomyces cerevisiae (strain Lalvin EC1118 / Prise de mousse))
Explore C8ZIW7 
Go to UniProtKB:  C8ZIW7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupC8ZIW7
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.83 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.176 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 84.109α = 90
b = 84.109β = 90
c = 116.549γ = 120
Software Package:
Software NamePurpose
HKL-2000data collection
PHASERphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-03-02
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2011-08-17
    Changes: Database references
  • Version 1.3: 2023-09-13
    Changes: Data collection, Database references, Derived calculations, Refinement description