2PID

Crystal structure of human mitochondrial tyrosyl-tRNA synthetase in complex with an adenylate analog


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.193 

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


Literature

Crystal Structure of Human Mitochondrial Tyrosyl-tRNA Synthetase Reveals Common and Idiosyncratic Features.

Bonnefond, L.Frugier, M.Touze, E.Lorber, B.Florentz, C.Giege, R.Sauter, C.Rudinger-Thirion, J.

(2007) Structure 15: 1505-1516

  • DOI: https://doi.org/10.1016/j.str.2007.09.018
  • Primary Citation of Related Structures:  
    2PID

  • PubMed Abstract: 

    We report the structure of a strictly mitochondrial human synthetase, namely tyrosyl-tRNA synthetase (mt-TyrRS), in complex with an adenylate analog at 2.2 A resolution. The structure is that of an active enzyme deprived of the C-terminal S4-like domain and resembles eubacterial TyrRSs with a canonical tyrosine-binding pocket and adenylate-binding residues typical of class I synthetases. Two bulges at the enzyme surface, not seen in eubacterial TyrRSs, correspond to conserved sequences in mt-TyrRSs. The synthetase electrostatic surface potential differs from that of other TyrRSs, including the human cytoplasmic homolog and the mitochondrial one from Neurospora crassa. The homodimeric human mt-TyrRS shows an asymmetry propagating from the dimer interface toward the two catalytic sites and extremities of each subunit. Mutagenesis of the catalytic domain reveals functional importance of Ser200 in line with an involvement of A73 rather than N1-N72 in tyrosine identity.


  • Organizational Affiliation

    Département Machineries Traductionnelles, Architecture et Réactivité de l'ARN, Université Louis Pasteur de Strasbourg, CNRS, IBMC, 15 rue René Descartes, 67084 Strasbourg, France.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Tyrosyl-tRNA synthetase
A, B
356Homo sapiensMutation(s): 0 
Gene Names: YARS2
EC: 6.1.1.1
UniProt & NIH Common Fund Data Resources
Find proteins for Q9Y2Z4 (Homo sapiens)
Explore Q9Y2Z4 
Go to UniProtKB:  Q9Y2Z4
PHAROS:  Q9Y2Z4
GTEx:  ENSG00000139131 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9Y2Z4
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.193 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 54α = 90
b = 62.4β = 90
c = 194.6γ = 90
Software Package:
Software NamePurpose
CNSrefinement
XDSdata reduction
XSCALEdata scaling
AMoREphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-10-23
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.2: 2023-08-30
    Changes: Data collection, Database references, Derived calculations, Refinement description
  • Version 1.3: 2024-03-13
    Changes: Source and taxonomy, Structure summary