1qf6

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[[Image:1qf6.gif|left|200px]]
 
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{{Structure
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==STRUCTURE OF E. COLI THREONYL-TRNA SYNTHETASE COMPLEXED WITH ITS COGNATE TRNA==
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|PDB= 1qf6 |SIZE=350|CAPTION= <scene name='initialview01'>1qf6</scene>, resolution 2.9&Aring;
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<StructureSection load='1qf6' size='340' side='right'caption='[[1qf6]], [[Resolution|resolution]] 2.90&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND= <scene name='pdbligand=5MU:5-METHYLURIDINE+5&#39;-MONOPHOSPHATE'>5MU</scene>, <scene name='pdbligand=A:ADENOSINE-5&#39;-MONOPHOSPHATE'>A</scene>, <scene name='pdbligand=AET:N-[N-(9-B-D-RIBOFURANOSYLPURIN-6-YL)METHYLCARBAMOYL]THREONINE-5&#39;-MONOPHOSPHATE'>AET</scene>, <scene name='pdbligand=AMP:ADENOSINE+MONOPHOSPHATE'>AMP</scene>, <scene name='pdbligand=C:CYTIDINE-5&#39;-MONOPHOSPHATE'>C</scene>, <scene name='pdbligand=G:GUANOSINE-5&#39;-MONOPHOSPHATE'>G</scene>, <scene name='pdbligand=G7M:N7-METHYL-GUANOSINE-5&#39;-MONOPHOSPHATE'>G7M</scene>, <scene name='pdbligand=H2U:5,6-DIHYDROURIDINE-5&#39;-MONOPHOSPHATE'>H2U</scene>, <scene name='pdbligand=PSU:PSEUDOURIDINE-5&#39;-MONOPHOSPHATE'>PSU</scene>, <scene name='pdbligand=U:URIDINE-5&#39;-MONOPHOSPHATE'>U</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene>
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<table><tr><td colspan='2'>[[1qf6]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. The April 2001 RCSB PDB [https://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Aminoacyl-tRNA Synthetases'' by David S. Goodsell is [https://dx.doi.org/10.2210/rcsb_pdb/mom_2001_4 10.2210/rcsb_pdb/mom_2001_4]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QF6 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1QF6 FirstGlance]. <br>
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|ACTIVITY= <span class='plainlinks'>[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] </span>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.9&#8491;</td></tr>
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|GENE=
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=5MU:5-METHYLURIDINE+5-MONOPHOSPHATE'>5MU</scene>, <scene name='pdbligand=AET:N-[N-(9-B-D-RIBOFURANOSYLPURIN-6-YL)METHYLCARBAMOYL]THREONINE-5-MONOPHOSPHATE'>AET</scene>, <scene name='pdbligand=AMP:ADENOSINE+MONOPHOSPHATE'>AMP</scene>, <scene name='pdbligand=G7M:N7-METHYL-GUANOSINE-5-MONOPHOSPHATE'>G7M</scene>, <scene name='pdbligand=H2U:5,6-DIHYDROURIDINE-5-MONOPHOSPHATE'>H2U</scene>, <scene name='pdbligand=PSU:PSEUDOURIDINE-5-MONOPHOSPHATE'>PSU</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
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|DOMAIN=
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1qf6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qf6 OCA], [https://pdbe.org/1qf6 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1qf6 RCSB], [https://www.ebi.ac.uk/pdbsum/1qf6 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1qf6 ProSAT]</span></td></tr>
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|RELATEDENTRY=
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</table>
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1qf6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qf6 OCA], [http://www.ebi.ac.uk/pdbsum/1qf6 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1qf6 RCSB]</span>
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== Function ==
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}}
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[https://www.uniprot.org/uniprot/SYT_ECOLI SYT_ECOLI] ThrS is also a translational repressor protein, it controls the translation of its own gene by binding to its mRNA.[HAMAP-Rule:MF_00184]
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/qf/1qf6_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1qf6 ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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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.
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'''STRUCTURE OF E. COLI THREONYL-TRNA SYNTHETASE COMPLEXED WITH ITS COGNATE TRNA'''
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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<ref>PMID:10319817</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 1qf6" style="background-color:#fffaf0;"></div>
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==Overview==
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==See Also==
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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.
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*[[Aminoacyl tRNA synthetase 3D structures|Aminoacyl tRNA synthetase 3D structures]]
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*[[Transfer RNA (tRNA)|Transfer RNA (tRNA)]]
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==About this Structure==
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== References ==
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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].
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<references/>
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__TOC__
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==Reference==
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</StructureSection>
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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]
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[[Category: Aminoacyl-tRNA Synthetases]]
[[Category: Aminoacyl-tRNA Synthetases]]
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
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[[Category: Single protein]]
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[[Category: Large Structures]]
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[[Category: Threonine--tRNA ligase]]
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[[Category: RCSB PDB Molecule of the Month]]
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[[Category: Dock-Bregeon, A C.]]
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[[Category: Dock-Bregeon AC]]
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[[Category: Moras, D.]]
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[[Category: Moras D]]
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[[Category: Rees, B.]]
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[[Category: Rees B]]
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[[Category: Sankaranarayanan, R.]]
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[[Category: Sankaranarayanan R]]
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[[Category: aminoacylation]]
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[[Category: amp]]
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[[Category: mrna]]
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[[Category: protein/rna]]
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[[Category: threonyl-trna synthetase]]
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[[Category: translational regulation]]
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[[Category: trna(thr)]]
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[[Category: zinc]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 23:12:37 2008''
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Current revision

STRUCTURE OF E. COLI THREONYL-TRNA SYNTHETASE COMPLEXED WITH ITS COGNATE TRNA

PDB ID 1qf6

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