View source for 3hjw


==Structure of a functional ribonucleoprotein pseudouridine synthase bound to a substrate RNA==
<StructureSection load='3hjw' size='340' side='right'caption='[[3hjw]], [[Resolution|resolution]] 2.35&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3hjw]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/Pyrococcus_furiosus Pyrococcus furiosus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3HJW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3HJW 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]] 2.35&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FHU:(5S,6R)-5-FLUORO-6-HYDROXY-PSEUDOURIDINE-5-MONOPHOSPHATE'>FHU</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</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=3hjw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3hjw OCA], [https://pdbe.org/3hjw PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3hjw RCSB], [https://www.ebi.ac.uk/pdbsum/3hjw PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3hjw ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/TRUB_PYRFU TRUB_PYRFU] Could be responsible for synthesis of pseudouridine from uracil-55 in the psi GC loop of transfer RNAs (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/hj/3hjw_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=3hjw ConSurf].
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== Publication Abstract from PubMed ==
Box H/ACA small nucleolar and Cajal body ribonucleoprotein particles comprise the most complex pseudouridine synthases and are essential for ribosome and spliceosome maturation. The multistep and multicomponent-mediated enzyme mechanism remains only partially understood. Here we report a crystal structure at 2.35 A of a substrate-bound functional archaeal enzyme containing three of the four proteins, Cbf5, Nop10 and L7Ae, and a box H/ACA RNA that reveals detailed information about the protein-only active site. The substrate RNA, containing 5-fluorouridine at the modification position, is fully docked and catalytically rearranged by the enzyme in a manner similar to that seen in two stand-alone pseudouridine synthases. Structural analysis provides a mechanism for plasticity in the diversity of guide RNA sequences used and identifies a substrate-anchoring loop of Cbf5 that also interacts with Gar1 in unliganded structures. Activity analyses of mutated proteins and RNAs support the structural findings and further suggest a role of the Cbf5 loop in regulation of enzyme activity.

Structure of a functional ribonucleoprotein pseudouridine synthase bound to a substrate RNA.,Liang B, Zhou J, Kahen E, Terns RM, Terns MP, Li H Nat Struct Mol Biol. 2009 Jul;16(7):740-6. Epub 2009 May 28. PMID:19478803<ref>PMID:19478803</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 3hjw" style="background-color:#fffaf0;"></div>

==See Also==
*[[Guide-independent Pseudouridine synthase|Guide-independent Pseudouridine synthase]]
*[[Pseudouridine synthase 3D structures|Pseudouridine synthase 3D structures]]
*[[Ribosome biogenesis protein 3D structures|Ribosome biogenesis protein 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Pyrococcus furiosus]]
[[Category: Kahen E]]
[[Category: Li H]]
[[Category: Liang B]]
[[Category: Terns MP]]
[[Category: Terns RM]]
[[Category: Zhou J]]