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2byt

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{{STRUCTURE_2byt| PDB=2byt | SCENE= }}
{{STRUCTURE_2byt| PDB=2byt | SCENE= }}
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'''THERMUS THERMOPHILUS LEUCYL-TRNA SYNTHETASE COMPLEXED WITH A TRNALEU TRANSCRIPT IN THE POST-EDITING CONFORMATION'''
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===THERMUS THERMOPHILUS LEUCYL-TRNA SYNTHETASE COMPLEXED WITH A TRNALEU TRANSCRIPT IN THE POST-EDITING CONFORMATION===
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==Overview==
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Leucyl-tRNA synthetase (LeuRS) has a specific post-transfer editing activity directed against mischarged isoleucine and similar noncognate amino acids. We describe the post-transfer-editing and product complexes of Thermus thermophilus LeuRS (LeuRSTT) with tRNA(Leu) at 2.9- to 3.3-A resolution. In the post-transfer-editing configuration, A76 binds in the editing active site exactly as previously found for the adenosine moiety of a small-molecule editing-substrate analog. The 60 C-terminal residues of LeuRSTT, unseen in previous structures, fold into a compact domain flexibly linked to the rest of the molecule and interacting with the G19-C56 tertiary base pair of tRNA(Leu). LeuRS recognition of tRNA(Leu) depends essentially on tRNA shape rather than base-specific interactions. The structures show that considerable domain rotations, notably of the editing domain, accompany the tRNA-3' end dynamics associated successively with aminoacylation, post-transfer editing and product release.
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{{ABSTRACT_PUBMED_16155583}}
==About this Structure==
==About this Structure==
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[[Category: Class i aminoacyl-trna synthetase]]
[[Category: Class i aminoacyl-trna synthetase]]
[[Category: Editing]]
[[Category: Editing]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 23:05:16 2008''

Revision as of 20:05, 27 July 2008

Image:2byt.png

Template:STRUCTURE 2byt

THERMUS THERMOPHILUS LEUCYL-TRNA SYNTHETASE COMPLEXED WITH A TRNALEU TRANSCRIPT IN THE POST-EDITING CONFORMATION

Template:ABSTRACT PUBMED 16155583

About this Structure

2BYT is a Protein complex structure of sequences from Thermus thermophilus. Full crystallographic information is available from OCA.

Reference

The crystal structure of leucyl-tRNA synthetase complexed with tRNALeu in the post-transfer-editing conformation., Tukalo M, Yaremchuk A, Fukunaga R, Yokoyama S, Cusack S, Nat Struct Mol Biol. 2005 Oct;12(10):923-30. Epub 2005 Sep 11. PMID:16155583

Page seeded by OCA on Sun Jul 27 23:05:16 2008

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