| Structural highlights
2dxi is a 4 chain structure with sequence from Thermus thermophilus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
| | Ligands: | , ,
| | Related: | 1gln, 1g59, 1j09, 1n75, 1n77, 1n78, 2cuz, 2cv0, 2cv1, 2cv2 |
| Activity: | Glutamate--tRNA ligase, with EC number 6.1.1.17 |
| Resources: | FirstGlance, OCA, RCSB, PDBsum, TOPSAN |
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
Glutamyl-tRNA synthetase (GluRS) is one of the aminoacyl-tRNA synthetases that require the cognate tRNA for specific amino acid recognition and activation. We analyzed the role of tRNA in amino acid recognition by crystallography. In the GluRS*tRNA(Glu)*Glu structure, GluRS and tRNA(Glu) collaborate to form a highly complementary L-glutamate-binding site. This collaborative site is functional, as it is formed in the same manner in pretransition-state mimic, GluRS*tRNA(Glu)*ATP*Eol (a glutamate analog), and posttransition-state mimic, GluRS*tRNA(Glu)*ESA (a glutamyl-adenylate analog) structures. In contrast, in the GluRS*Glu structure, only GluRS forms the amino acid-binding site, which is defective and accounts for the binding of incorrect amino acids, such as D-glutamate and L-glutamine. Therefore, tRNA(Glu) is essential for formation of the completely functional binding site for L-glutamate. These structures, together with our previously described structures, reveal that tRNA plays a crucial role in accurate positioning of both L-glutamate and ATP, thus driving the amino acid activation.
Structural bases of transfer RNA-dependent amino acid recognition and activation by glutamyl-tRNA synthetase.,Sekine S, Shichiri M, Bernier S, Chenevert R, Lapointe J, Yokoyama S Structure. 2006 Dec;14(12):1791-9. PMID:17161369[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Sekine S, Shichiri M, Bernier S, Chenevert R, Lapointe J, Yokoyama S. Structural bases of transfer RNA-dependent amino acid recognition and activation by glutamyl-tRNA synthetase. Structure. 2006 Dec;14(12):1791-9. PMID:17161369 doi:10.1016/j.str.2006.10.005
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