1Y2Q image
Deposition Date 2004-11-23
Release Date 2005-06-14
Last Version Date 2024-03-13
Entry Detail
PDB ID:
1Y2Q
Keywords:
LIGASE
Title:
Crystal structure of the editing domain of threonyl-tRNA synthetase from Pyrococcus abyssi
Biological Source:
Source Organism:
Pyrococcus abyssi (Taxon ID: 29292)
Host Organism:
Escherichia coli BL21(DE3)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.95 Å
R-Value Free:
0.27
R-Value Work:
0.20
R-Value Observed:
0.20
Space Group:
P 32 2 1
1Y2Q validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Threonyl-tRNA synthetase
Gene (Uniprot):thrS
Chain IDs:A
Chain Length:143
Number of Molecules:1
Biological Source:Pyrococcus abyssi
UniProt ID:Q9UZ14 Pfam ID:PF08915 EC:6.1.1.3
Primary Citation
A D-amino acid editing module coupled to the translational apparatus in archaea
Nat.Struct.Mol.Biol. 12 556 557 (2005)
PMID: 15908961 DOI: 10.1038/nsmb943

Abstact

We report the crystal structure of an archaea-specific editing domain of threonyl-tRNA synthetase that reveals a marked structural similarity to D-amino acid deacylases found in eubacteria and eukaryotes. The domain can bind D-amino acids despite a low sequence identity to other D-amino acid deacylases. These results together indicate the presence of these deacylases in all three kingdoms of life. This underlines an important role they may have played in enforcing homochirality during translation.

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Disease

Primary Citation of related structures
1Y2R