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| | <StructureSection load='1ivs' size='340' side='right'caption='[[1ivs]], [[Resolution|resolution]] 2.90Å' scene=''> | | <StructureSection load='1ivs' size='340' side='right'caption='[[1ivs]], [[Resolution|resolution]] 2.90Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[1ivs]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/"flavobacterium_thermophilum"_yoshida_and_oshima_1971 "flavobacterium thermophilum" yoshida and oshima 1971]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IVS OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1IVS FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[1ivs]] is a 4 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=1IVS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1IVS FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=VAA:N-[VALINYL]-N-[ADENOSYL]-DIAMINOSUFONE'>VAA</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]] 2.9Å</td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">valS ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=274 "Flavobacterium thermophilum" Yoshida and Oshima 1971])</td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=VAA:N-[VALINYL]-N-[ADENOSYL]-DIAMINOSUFONE'>VAA</scene></td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Valine--tRNA_ligase Valine--tRNA ligase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=6.1.1.9 6.1.1.9] </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=1ivs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ivs OCA], [https://pdbe.org/1ivs PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ivs RCSB], [https://www.ebi.ac.uk/pdbsum/1ivs PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ivs ProSAT], [https://www.topsan.org/Proteins/RSGI/1ivs TOPSAN]</span></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=1ivs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ivs OCA], [http://pdbe.org/1ivs PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1ivs RCSB], [http://www.ebi.ac.uk/pdbsum/1ivs PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1ivs ProSAT], [http://www.topsan.org/Proteins/RSGI/1ivs TOPSAN]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/SYV_THETH SYV_THETH]] Catalyzes the attachment of valine to tRNA(Val). As ValRS can inadvertently accommodate and process structurally similar amino acids such as threonine, to avoid such errors, it has a "posttransfer" editing activity that hydrolyzes mischarged Thr-tRNA(Val) in a tRNA-dependent manner.[HAMAP-Rule:MF_02004] | + | [https://www.uniprot.org/uniprot/SYV_THETH SYV_THETH] Catalyzes the attachment of valine to tRNA(Val). As ValRS can inadvertently accommodate and process structurally similar amino acids such as threonine, to avoid such errors, it has a "posttransfer" editing activity that hydrolyzes mischarged Thr-tRNA(Val) in a tRNA-dependent manner.[HAMAP-Rule:MF_02004] |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Flavobacterium thermophilum yoshida and oshima 1971]] | |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Valine--tRNA ligase]] | + | [[Category: Thermus thermophilus]] |
| - | [[Category: Fukai, S]] | + | [[Category: Fukai S]] |
| - | [[Category: Nureki, O]] | + | [[Category: Nureki O]] |
| - | [[Category: Structural genomic]]
| + | [[Category: Sekine S-I]] |
| - | [[Category: Sekine, S I]] | + | [[Category: Shimada A]] |
| - | [[Category: Shimada, A]] | + | [[Category: Vassylyev DG]] |
| - | [[Category: Vassylyev, D G]] | + | [[Category: Yokoyama S]] |
| - | [[Category: Yokoyama, S]] | + | |
| - | [[Category: Beta barrel]]
| + | |
| - | [[Category: Coiled coil]]
| + | |
| - | [[Category: Helix bundle]]
| + | |
| - | [[Category: Ligase-rna complex]]
| + | |
| - | [[Category: Rossmann fold]]
| + | |
| - | [[Category: Rsgi]]
| + | |
| Structural highlights
Function
SYV_THETH Catalyzes the attachment of valine to tRNA(Val). As ValRS can inadvertently accommodate and process structurally similar amino acids such as threonine, to avoid such errors, it has a "posttransfer" editing activity that hydrolyzes mischarged Thr-tRNA(Val) in a tRNA-dependent manner.[HAMAP-Rule:MF_02004]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
The molecular interactions between valyl-tRNA synthetase (ValRS) and tRNA(Val), with the C34-A35-C36 anticodon, from Thermus thermophilus were studied by crystallographic analysis and structure-based mutagenesis. In the ValRS-bound structure of tRNA(Val), the successive A35-C36 residues (the major identity elements) of tRNA(Val) are base-stacked upon each other, and fit into a pocket on the alpha-helix bundle domain of ValRS. Hydrogen bonds are formed between ValRS and A35-C36 of tRNA(Val) in a base-specific manner. The C-terminal coiled-coil domain of ValRS interacts electrostatically with A20 and hydrophobically with the G19*C56 tertiary base pair. The loss of these interactions by the deletion of the coiled-coil domain of ValRS increased the K(M) value for tRNA(Val) 28-fold and decreased the k(cat) value 19-fold in the aminoacylation. The tRNA(Val) K(M) and k(cat) values were increased 21-fold and decreased 32-fold, respectively, by the disruption of the G18*U55 and G19*C56 tertiary base pairs, which associate the D- and T-loops for the formation of the L-shaped tRNA structure. Therefore, the coiled-coil domain of ValRS is likely to stabilize the L-shaped tRNA structure during the aminoacylation reaction.
Mechanism of molecular interactions for tRNA(Val) recognition by valyl-tRNA synthetase.,Fukai S, Nureki O, Sekine S, Shimada A, Vassylyev DG, Yokoyama S RNA. 2003 Jan;9(1):100-11. PMID:12554880[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Fukai S, Nureki O, Sekine S, Shimada A, Vassylyev DG, Yokoyama S. Mechanism of molecular interactions for tRNA(Val) recognition by valyl-tRNA synthetase. RNA. 2003 Jan;9(1):100-11. PMID:12554880
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