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1h3f

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[[Image:1h3f.gif|left|200px]]
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{{STRUCTURE_1h3f| PDB=1h3f | SCENE= }}
{{STRUCTURE_1h3f| PDB=1h3f | SCENE= }}
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'''TYROSYL-TRNA SYNTHETASE FROM THERMUS THERMOPHILUS COMPLEXED WITH TYROSINOL'''
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===TYROSYL-TRNA SYNTHETASE FROM THERMUS THERMOPHILUS COMPLEXED WITH TYROSINOL===
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==Overview==
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Bacterial tyrosyl-tRNA synthetases (TyrRS) possess a flexibly linked C-terminal domain of approximately 80 residues, which has hitherto been disordered in crystal structures of the enzyme. We have determined the structure of Thermus thermophilus TyrRS at 2.0 A resolution in a crystal form in which the C-terminal domain is ordered, and confirm that the fold is similar to part of the C-terminal domain of ribosomal protein S4. We have also determined the structure at 2.9 A resolution of the complex of T.thermophilus TyrRS with cognate tRNA(tyr)(G Psi A). In this structure, the C-terminal domain binds between the characteristic long variable arm of the tRNA and the anti-codon stem, thus recognizing the unique shape of the tRNA. The anticodon bases have a novel conformation with A-36 stacked on G-34, and both G-34 and Psi-35 are base-specifically recognized. The tRNA binds across the two subunits of the dimeric enzyme and, remarkably, the mode of recognition of the class I TyrRS for its cognate tRNA resembles that of a class II synthetase in being from the major groove side of the acceptor stem.
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{{ABSTRACT_PUBMED_12110594}}
==About this Structure==
==About this Structure==
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[[Category: Yaremchuk, A.]]
[[Category: Yaremchuk, A.]]
[[Category: Aminoacyl-trna synthetase]]
[[Category: Aminoacyl-trna synthetase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 18:23:07 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 06:33:43 2008''

Revision as of 03:33, 1 July 2008

Image:1h3f.png

Template:STRUCTURE 1h3f

TYROSYL-TRNA SYNTHETASE FROM THERMUS THERMOPHILUS COMPLEXED WITH TYROSINOL

Template:ABSTRACT PUBMED 12110594

About this Structure

1H3F is a Single protein structure of sequence from Thermus thermophilus. Full crystallographic information is available from OCA.

Reference

Class I tyrosyl-tRNA synthetase has a class II mode of cognate tRNA recognition., Yaremchuk A, Kriklivyi I, Tukalo M, Cusack S, EMBO J. 2002 Jul 15;21(14):3829-40. PMID:12110594

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