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==Crystal structure of Thermus thermophilus Phenylalanyl-tRNA synthetase complexed with L-dopa==
==Crystal structure of Thermus thermophilus Phenylalanyl-tRNA synthetase complexed with L-dopa==
<StructureSection load='3teh' size='340' side='right' caption='[[3teh]], [[Resolution|resolution]] 2.85&Aring;' scene=''>
<StructureSection load='3teh' size='340' side='right'caption='[[3teh]], [[Resolution|resolution]] 2.85&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[3teh]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Thermus_thermophilus Thermus thermophilus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3TEH OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3TEH FirstGlance]. <br>
<table><tr><td colspan='2'>[[3teh]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermus_thermophilus Thermus thermophilus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3TEH OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3TEH FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=DAH:3,4-DIHYDROXYPHENYLALANINE'>DAH</scene></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.8524&#8491;</td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3hfz|3hfz]], [[3teg|3teg]]</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=DAH:3,4-DIHYDROXYPHENYLALANINE'>DAH</scene></td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Phenylalanine--tRNA_ligase Phenylalanine--tRNA ligase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=6.1.1.20 6.1.1.20] </span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3teh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3teh OCA], [https://pdbe.org/3teh PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3teh RCSB], [https://www.ebi.ac.uk/pdbsum/3teh PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3teh ProSAT]</span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3teh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3teh OCA], [http://pdbe.org/3teh PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3teh RCSB], [http://www.ebi.ac.uk/pdbsum/3teh PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3teh ProSAT]</span></td></tr>
</table>
</table>
<div style="background-color:#fffaf0;">
== Function ==
== Publication Abstract from PubMed ==
[https://www.uniprot.org/uniprot/SYFA_THETH SYFA_THETH]
Aminoacyl-tRNA synthetases exert control over the accuracy of translation by selective pairing the correct amino acids with their cognate tRNAs, and proofreading the misacylated products. Here we show that three existing, structurally different phenylalanyl-tRNA synthetases-human mitochondrial (HsmtPheRS), human cytoplasmic (HsctPheRS), and eubacterial from Thermus thermophilus (TtPheRS), catalyze mischarging of tRNA(Phe) with an oxidized analog of tyrosine-L-dopa. The lowest level of L-dopa discrimination over the cognate amino acid, exhibited by HsmtPheRS, is comparable to that of tyrosyl-tRNA synthetase. HsmtPheRS and TtPheRS complexes with L-dopa revealed in the active sites an electron density shaping this ligand. HsctPheRS and TtPheRS possessing editing activity are capable of hydrolyzing the exogenous L-dopa-tRNA(Phe) as efficiently as Tyr-tRNA(Phe). However, editing activity of PheRS does not guarantee reduction of the aminoacylation error rate to escape misincorporation of L-dopa into polypeptide chains.


Bacterial and Eukaryotic Phenylalanyl-tRNA Synthetases Catalyze Misaminoacylation of tRNA(Phe) with 3,4-Dihydroxy-L-Phenylalanine.,Moor N, Klipcan L, Safro MG Chem Biol. 2011 Oct 28;18(10):1221-9. PMID:22035791<ref>PMID:22035791</ref>
==See Also==
 
*[[Aminoacyl tRNA synthetase 3D structures|Aminoacyl tRNA synthetase 3D structures]]
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3teh" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Phenylalanine--tRNA ligase]]
[[Category: Large Structures]]
[[Category: Thermus thermophilus]]
[[Category: Thermus thermophilus]]
[[Category: Klipcan, L]]
[[Category: Klipcan L]]
[[Category: Moor, N]]
[[Category: Moor N]]
[[Category: Safro, M]]
[[Category: Safro M]]
[[Category: Aar]]
[[Category: L-dopa]]
[[Category: Ligase]]
[[Category: Trna]]

Latest revision as of 13:08, 1 March 2024

Crystal structure of Thermus thermophilus Phenylalanyl-tRNA synthetase complexed with L-dopaCrystal structure of Thermus thermophilus Phenylalanyl-tRNA synthetase complexed with L-dopa

Structural highlights

3teh is a 2 chain structure with sequence from Thermus thermophilus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.8524Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

SYFA_THETH

See Also

3teh, resolution 2.85Å

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