2du7: Difference between revisions
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New page: left|200px<br /><applet load="2du7" size="450" color="white" frame="true" align="right" spinBox="true" caption="2du7, resolution 3.60Å" /> '''Crystal structure of... |
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== | ==Crystal structure of Methanococcus jannacshii O-phosphoseryl-tRNA synthetase== | ||
<StructureSection load='2du7' size='340' side='right'caption='[[2du7]], [[Resolution|resolution]] 3.60Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[2du7]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Methanocaldococcus_jannaschii Methanocaldococcus jannaschii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2DU7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2DU7 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]] 3.6Å</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=2du7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2du7 OCA], [https://pdbe.org/2du7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2du7 RCSB], [https://www.ebi.ac.uk/pdbsum/2du7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2du7 ProSAT], [https://www.topsan.org/Proteins/RSGI/2du7 TOPSAN]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/SEPS_METJA SEPS_METJA] Catalyzes the attachment of O-phosphoserine (Sep) to tRNA(Cys).<ref>PMID:15790858</ref> | |||
== 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/du/2du7_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=2du7 ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Cysteine is ligated to tRNA(Cys) by cysteinyl-tRNA synthetase in most organisms. However, in methanogenic archaea lacking cysteinyl-tRNA synthetase, O-phosphoserine is ligated to tRNA(Cys) by O-phosphoseryl-tRNA synthetase (SepRS), and the phosphoseryl-tRNA(Cys) is converted to cysteinyl-tRNA(Cys). In this study, we determined the crystal structure of the SepRS tetramer in complex with tRNA(Cys) and O-phosphoserine at 2.6-A resolution. The catalytic domain of SepRS recognizes the negatively charged side chain of O-phosphoserine at a noncanonical site, using the dipole moment of a conserved alpha-helix. The unique C-terminal domain specifically recognizes the anticodon GCA of tRNA(Cys). On the basis of the structure, we engineered SepRS to recognize tRNA(Cys) mutants with the anticodons UCA and CUA and clarified the anticodon recognition mechanism by crystallography. The mutant SepRS-tRNA pairs may be useful for translational incorporation of O-phosphoserine into proteins in response to the stop codons UGA and UAG. | |||
Structural insights into the first step of RNA-dependent cysteine biosynthesis in archaea.,Fukunaga R, Yokoyama S Nat Struct Mol Biol. 2007 Apr;14(4):272-9. Epub 2007 Mar 11. PMID:17351629<ref>PMID:17351629</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 2du7" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Aminoacyl tRNA synthetase 3D structures|Aminoacyl tRNA synthetase 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Methanocaldococcus jannaschii]] | [[Category: Methanocaldococcus jannaschii]] | ||
[[Category: Fukunaga R]] | |||
[[Category: Fukunaga | |||
Latest revision as of 08:30, 25 October 2023
Crystal structure of Methanococcus jannacshii O-phosphoseryl-tRNA synthetase
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