1YI8 image
Deposition Date 2005-01-11
Release Date 2005-02-22
Last Version Date 2024-02-14
Entry Detail
PDB ID:
1YI8
Keywords:
LIGASE
Title:
Crystal structure of tryptophanyl trRNA synthetase II from Deinococcus radiodurans in complex with L-Trp
Biological Source:
Source Organism:
Deinococcus radiodurans (Taxon ID: 243230)
Host Organism:
Escherichia coli BL21(DE3)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.10 Å
R-Value Free:
0.28
R-Value Work:
0.26
R-Value Observed:
0.26
Space Group:
C 1 2 1
1YI8 validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:tryptophanyl-tRNA synthetase
Gene (Uniprot):trpS2
Chain IDs:A (auth: B), B (auth: A), C
Chain Length:351
Number of Molecules:3
Biological Source:Deinococcus radiodurans
UniProt ID:Q9RVD6 Pfam ID:PF00579 EC:6.1.1.2
Ligand Molecules
TRP
Primary Citation
Structure and activity of an aminoacyl-tRNA synthetase that charges tRNA with nitro-tryptophan.
Nat.Struct.Mol.Biol. 12 274 275 (2005)
PMID: 15723076 DOI: 10.1038/nsmb907

Abstact

The most divergent of two tryptophanyl tRNA synthetases (TrpRS II) found in Deinococcus radiodurans interacts with a nitric oxide synthase protein that produces 4-nitro-tryptophan (4-NRP). TrpRS II efficiently charges transfer RNA(Trp) with 4-NRP and 5-hydroxy-tryptophan (5-HRP). The crystal structures of TrpRS II bound to tryptophan and 5-HRP reveal residue substitutions that accommodate modified indoles. A class of auxiliary bacterial TrpRSs conserve this capacity to charge tRNA with nonstandard amino acids.

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Primary Citation of related structures
1YI8