1qf6: Difference between revisions
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'''STRUCTURE OF E. COLI THREONYL-TRNA SYNTHETASE COMPLEXED WITH ITS COGNATE TRNA''' | {{Structure | ||
|PDB= 1qf6 |SIZE=350|CAPTION= <scene name='initialview01'>1qf6</scene>, resolution 2.9Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene> and <scene name='pdbligand=AMP:ADENOSINE MONOPHOSPHATE'>AMP</scene> | |||
|ACTIVITY= [http://en.wikipedia.org/wiki/Threonine--tRNA_ligase Threonine--tRNA ligase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=6.1.1.3 6.1.1.3] | |||
|GENE= | |||
}} | |||
'''STRUCTURE OF E. COLI THREONYL-TRNA SYNTHETASE COMPLEXED WITH ITS COGNATE TRNA''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
1QF6 is a [ | 1QF6 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. The following page contains interesting information on the relation of 1QF6 with [[http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/pdb16_1.html Aminoacyl-tRNA Synthetases]]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QF6 OCA]. | ||
==Reference== | ==Reference== | ||
The structure of threonyl-tRNA synthetase-tRNA(Thr) complex enlightens its repressor activity and reveals an essential zinc ion in the active site., Sankaranarayanan R, Dock-Bregeon AC, Romby P, Caillet J, Springer M, Rees B, Ehresmann C, Ehresmann B, Moras D, Cell. 1999 Apr 30;97(3):371-81. PMID:[http:// | The structure of threonyl-tRNA synthetase-tRNA(Thr) complex enlightens its repressor activity and reveals an essential zinc ion in the active site., Sankaranarayanan R, Dock-Bregeon AC, Romby P, Caillet J, Springer M, Rees B, Ehresmann C, Ehresmann B, Moras D, Cell. 1999 Apr 30;97(3):371-81. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10319817 10319817] | ||
[[Category: Aminoacyl-tRNA Synthetases]] | [[Category: Aminoacyl-tRNA Synthetases]] | ||
[[Category: Escherichia coli]] | [[Category: Escherichia coli]] | ||
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[[Category: zinc]] | [[Category: zinc]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 13:36:35 2008'' | ||
Revision as of 11:36, 20 March 2008
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| 1qf6, resolution 2.9Å | |||||||||||||
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| Ligands: | ZN and AMP | ||||||||||||
| Activity: | Threonine--tRNA ligase, with EC number 6.1.1.3 | ||||||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||||||
STRUCTURE OF E. COLI THREONYL-TRNA SYNTHETASE COMPLEXED WITH ITS COGNATE TRNA
Overview
E. coli threonyl-tRNA synthetase (ThrRS) is a class II enzyme that represses the translation of its own mRNA. We report the crystal structure at 2.9 A resolution of the complex between tRNA(Thr) and ThrRS, whose structural features reveal novel strategies for providing specificity in tRNA selection. These include an amino-terminal domain containing a novel protein fold that makes minor groove contacts with the tRNA acceptor stem. The enzyme induces a large deformation of the anticodon loop, resulting in an interaction between two adjacent anticodon bases, which accounts for their prominent role in tRNA identity and translational regulation. A zinc ion found in the active site is implicated in amino acid recognition/discrimination.
About this Structure
1QF6 is a Single protein structure of sequence from Escherichia coli. The following page contains interesting information on the relation of 1QF6 with [Aminoacyl-tRNA Synthetases]. Full crystallographic information is available from OCA.
Reference
The structure of threonyl-tRNA synthetase-tRNA(Thr) complex enlightens its repressor activity and reveals an essential zinc ion in the active site., Sankaranarayanan R, Dock-Bregeon AC, Romby P, Caillet J, Springer M, Rees B, Ehresmann C, Ehresmann B, Moras D, Cell. 1999 Apr 30;97(3):371-81. PMID:10319817
Page seeded by OCA on Thu Mar 20 13:36:35 2008
