2cv2

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|PDB= 2cv2 |SIZE=350|CAPTION= <scene name='initialview01'>2cv2</scene>, resolution 2.69&Aring;
|PDB= 2cv2 |SIZE=350|CAPTION= <scene name='initialview01'>2cv2</scene>, resolution 2.69&Aring;
|SITE=
|SITE=
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|LIGAND= <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene> and <scene name='pdbligand=GSU:O5'-(L-GLUTAMYL-SULFAMOYL)-ADENOSINE'>GSU</scene>
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|LIGAND= <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene> and <scene name='pdbligand=GSU:O5&#39;-(L-GLUTAMYL-SULFAMOYL)-ADENOSINE'>GSU</scene>
|ACTIVITY= [http://en.wikipedia.org/wiki/Glutamate--tRNA_ligase Glutamate--tRNA ligase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=6.1.1.17 6.1.1.17]
|ACTIVITY= [http://en.wikipedia.org/wiki/Glutamate--tRNA_ligase Glutamate--tRNA ligase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=6.1.1.17 6.1.1.17]
|GENE=
|GENE=
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[[Category: structural genomic]]
[[Category: structural genomic]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 16:20:11 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 23 14:53:52 2008''

Revision as of 12:53, 23 March 2008

Image:2cv2.gif


PDB ID 2cv2

Drag the structure with the mouse to rotate
, resolution 2.69Å
Ligands: , and
Activity: Glutamate--tRNA ligase, with EC number 6.1.1.17
Coordinates: save as pdb, mmCIF, xml



Glutamyl-tRNA synthetase from Thermus thermophilus in complex with tRNA(Glu) and an enzyme inhibitor, Glu-AMS


Overview

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.

About this Structure

2CV2 is a Single protein structure of sequence from Thermus thermophilus. Full crystallographic information is available from OCA.

Reference

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

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