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3ip4
From Proteopedia
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| - | {{STRUCTURE_3ip4| PDB=3ip4 | SCENE= }} | ||
| - | ===The high resolution structure of GatCAB=== | ||
| - | {{ABSTRACT_PUBMED_19906721}} | ||
| - | == | + | ==The high resolution structure of GatCAB== |
| - | [[http://www.uniprot.org/uniprot/GATA_STAAM GATA_STAAM | + | <StructureSection load='3ip4' size='340' side='right'caption='[[3ip4]], [[Resolution|resolution]] 1.90Å' scene=''> |
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[3ip4]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Staphylococcus_aureus_subsp._aureus_Mu50 Staphylococcus aureus subsp. aureus Mu50]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3IP4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3IP4 FirstGlance]. <br> | ||
| + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.9Å</td></tr> | ||
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></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=3ip4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ip4 OCA], [https://pdbe.org/3ip4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3ip4 RCSB], [https://www.ebi.ac.uk/pdbsum/3ip4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3ip4 ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/GATA_STAAM GATA_STAAM] Allows the formation of correctly charged Gln-tRNA(Gln) through the transamidation of misacylated Glu-tRNA(Gln) in organisms which lack glutaminyl-tRNA synthetase. The reaction takes place in the presence of glutamine and ATP through an activated gamma-phospho-Glu-tRNA(Gln) (By similarity). | ||
| + | == Evolutionary Conservation == | ||
| + | [[Image:Consurf_key_small.gif|200px|right]] | ||
| + | Check<jmol> | ||
| + | <jmolCheckbox> | ||
| + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ip/3ip4_consurf.spt"</scriptWhenChecked> | ||
| + | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | ||
| + | <text>to colour the structure by Evolutionary Conservation</text> | ||
| + | </jmolCheckbox> | ||
| + | </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=3ip4 ConSurf]. | ||
| + | <div style="clear:both"></div> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | In many prokaryotes the biosynthesis of the amide aminoacyl-tRNAs, Gln-tRNA(Gln) and Asn-tRNA(Asn), proceeds by an indirect route in which mischarged Glu-tRNA(Gln) or Asp-tRNA(Asn) is amidated to the correct aminoacyl-tRNA catalyzed by a tRNA-dependent amidotransferase (AdT). Two types of AdTs exist: bacteria, archaea and organelles possess heterotrimeric GatCAB, while heterodimeric GatDE occurs exclusively in archaea. Bacterial GatCAB and GatDE recognize the first base pair of the acceptor stem and the D-loop of their tRNA substrates, while archaeal GatCAB recognizes the tertiary core of the tRNA, but not the first base pair. Here, we present the crystal structure of the full-length Staphylococcus aureus GatCAB. Its GatB tail domain possesses a conserved Lys rich motif that is situated close to the variable loop in a GatCAB:tRNA(Gln) docking model. This motif is also conserved in the tail domain of archaeal GatCAB, suggesting this basic region may recognize the tRNA variable loop to discriminate Asp-tRNA(Asn) from Asp-tRNA(Asp) in archaea. Furthermore, we identified a 3(10) turn in GatB that permits the bacterial GatCAB to distinguish a U1-A72 base pair from a G1-C72 pair; the absence of this element in archaeal GatCAB enables the latter enzyme to recognize aminoacyl-tRNAs with G1-C72 base pairs. | ||
| - | + | Two distinct regions in Staphylococcus aureus GatCAB guarantee accurate tRNA recognition.,Nakamura A, Sheppard K, Yamane J, Yao M, Soll D, Tanaka I Nucleic Acids Res. 2010 Jan;38(2):672-82. Epub 2009 Nov 11. PMID:19906721<ref>PMID:19906721</ref> | |
| - | + | ||
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | < | + | </div> |
| - | + | <div class="pdbe-citations 3ip4" style="background-color:#fffaf0;"></div> | |
| - | + | ||
| - | [[ | + | ==See Also== |
| - | + | *[[Glutamyl-tRNA(Gln) amidotransferase|Glutamyl-tRNA(Gln) amidotransferase]] | |
| - | [[Category: | + | == References == |
| - | [[Category: | + | <references/> |
| - | [[Category: | + | __TOC__ |
| - | [[Category: | + | </StructureSection> |
| - | [[Category: | + | [[Category: Large Structures]] |
| + | [[Category: Staphylococcus aureus subsp. aureus Mu50]] | ||
| + | [[Category: Nakamura A]] | ||
| + | [[Category: Tanaka I]] | ||
| + | [[Category: Yao M]] | ||
Current revision
The high resolution structure of GatCAB
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