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| | ==Crystal structure of the TiaS-tRNA(Ile2)-AMPCPP-agmatine complex== | | ==Crystal structure of the TiaS-tRNA(Ile2)-AMPCPP-agmatine complex== |
| - | <StructureSection load='3amu' size='340' side='right' caption='[[3amu]], [[Resolution|resolution]] 3.10Å' scene=''> | + | <StructureSection load='3amu' size='340' side='right'caption='[[3amu]], [[Resolution|resolution]] 3.10Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[3amu]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Archaeoglobus_fulgidus Archaeoglobus fulgidus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3AMU OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3AMU FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[3amu]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Archaeoglobus_fulgidus Archaeoglobus fulgidus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3AMU OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3AMU FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=AG2:AGMATINE'>AG2</scene>, <scene name='pdbligand=APC:DIPHOSPHOMETHYLPHOSPHONIC+ACID+ADENOSYL+ESTER'>APC</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]] 3.1Å</td></tr> |
| - | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=TPO:PHOSPHOTHREONINE'>TPO</scene></td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AG2:AGMATINE'>AG2</scene>, <scene name='pdbligand=APC:DIPHOSPHOMETHYLPHOSPHONIC+ACID+ADENOSYL+ESTER'>APC</scene>, <scene name='pdbligand=TPO:PHOSPHOTHREONINE'>TPO</scene></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3amt|3amt]], [[3au7|3au7]]</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=3amu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3amu OCA], [https://pdbe.org/3amu PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3amu RCSB], [https://www.ebi.ac.uk/pdbsum/3amu PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3amu ProSAT]</span></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">AF_2259 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=2234 Archaeoglobus fulgidus])</td></tr>
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| - | <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=3amu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3amu OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3amu RCSB], [http://www.ebi.ac.uk/pdbsum/3amu PDBsum]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/TIAS_ARCFU TIAS_ARCFU]] ATP-dependent agmatine transferase that catalyzes the formation of 2-agmatinylcytidine (agm2C) at the wobble position (C34) of tRNA(Ile2), converting the codon specificity from AUG to AUA.<ref>PMID:20139989</ref> | + | [https://www.uniprot.org/uniprot/TIAS_ARCFU TIAS_ARCFU] ATP-dependent agmatine transferase that catalyzes the formation of 2-agmatinylcytidine (agm2C) at the wobble position (C34) of tRNA(Ile2), converting the codon specificity from AUG to AUA.<ref>PMID:20139989</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> |
| | </div> | | </div> |
| | + | <div class="pdbe-citations 3amu" style="background-color:#fffaf0;"></div> |
| | == References == | | == References == |
| | <references/> | | <references/> |
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| | </StructureSection> | | </StructureSection> |
| | [[Category: Archaeoglobus fulgidus]] | | [[Category: Archaeoglobus fulgidus]] |
| - | [[Category: Numata, T]] | + | [[Category: Large Structures]] |
| - | [[Category: Osawa, T]] | + | [[Category: Numata T]] |
| - | [[Category: Modification]] | + | [[Category: Osawa T]] |
| - | [[Category: Rna binding protein-rna complex]]
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| - | [[Category: Tia]]
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| Structural highlights
Function
TIAS_ARCFU ATP-dependent agmatine transferase that catalyzes the formation of 2-agmatinylcytidine (agm2C) at the wobble position (C34) of tRNA(Ile2), converting the codon specificity from AUG to AUA.[1]
Publication Abstract from PubMed
The cytidine at the first position of the anticodon (C34) in the AUA codon-specific archaeal tRNA(Ile2) is modified to 2-agmatinylcytidine (agm(2)C or agmatidine), an agmatine-conjugated cytidine derivative, which is crucial for the precise decoding of the genetic code. Agm(2)C is synthesized by tRNA(Ile)-agm(2)C synthetase (TiaS) in an ATP-dependent manner. Here we present the crystal structures of the Archaeoglobus fulgidus TiaS-tRNA(Ile2) complexed with ATP, or with AMPCPP and agmatine, revealing a previously unknown kinase module required for activating C34 by phosphorylation, and showing the molecular mechanism by which TiaS discriminates between tRNA(Ile2) and tRNA(Met). In the TiaS-tRNA(Ile2)-ATP complex, C34 is trapped within a pocket far away from the ATP-binding site. In the agmatine-containing crystals, C34 is located near the AMPCPP gamma-phosphate in the kinase module, demonstrating that agmatine is essential for placing C34 in the active site. These observations also provide the structural dynamics for agm(2)C formation.
Structural basis of tRNA agmatinylation essential for AUA codon decoding.,Osawa T, Kimura S, Terasaka N, Inanaga H, Suzuki T, Numata T Nat Struct Mol Biol. 2011 Oct 16;18(11):1275-80. doi: 10.1038/nsmb.2144. PMID:22002223[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Ikeuchi Y, Kimura S, Numata T, Nakamura D, Yokogawa T, Ogata T, Wada T, Suzuki T, Suzuki T. Agmatine-conjugated cytidine in a tRNA anticodon is essential for AUA decoding in archaea. Nat Chem Biol. 2010 Apr;6(4):277-82. doi: 10.1038/nchembio.323. Epub 2010 Feb 7. PMID:20139989 doi:10.1038/nchembio.323
- ↑ Osawa T, Kimura S, Terasaka N, Inanaga H, Suzuki T, Numata T. Structural basis of tRNA agmatinylation essential for AUA codon decoding. Nat Struct Mol Biol. 2011 Oct 16;18(11):1275-80. doi: 10.1038/nsmb.2144. PMID:22002223 doi:10.1038/nsmb.2144
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