3p06: Difference between revisions

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New page: '''Unreleased structure''' The entry 3p06 is ON HOLD Authors: Chung, I.Y.W., Paetzel, M. Description: Structure of a viral protein ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ...
 
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'''Unreleased structure'''


The entry 3p06 is ON HOLD
==Crystal structure of Tellina virus 1 VP4 protease in the form of an intra-molecular(cis)acyl-enzyme complex.==
<StructureSection load='3p06' size='340' side='right'caption='[[3p06]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3p06]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Tellina_virus_1 Tellina virus 1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3P06 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3P06 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]] 2.1&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BME:BETA-MERCAPTOETHANOL'>BME</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=URE:UREA'>URE</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=3p06 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3p06 OCA], [https://pdbe.org/3p06 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3p06 RCSB], [https://www.ebi.ac.uk/pdbsum/3p06 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3p06 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q2PBR5_9VIRU Q2PBR5_9VIRU]
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Viruses of the Birnaviridae family are characterized by their bisegmented double-stranded RNA genome that resides within a single-shelled non-enveloped icosahedral particle. They infect birds, aquatic organisms and insects. Tellina virus 1 (TV-1) is an Aquabirnavirus isolated from the mollusk Tellina tenuis. It encodes a polyprotein (NH2-pVP2-X-VP4-VP3-COOH) that is cleaved by the self-encoded protease VP4 to yield capsid precursor protein pVP2, peptide X and ribonucleoprotein VP3. Here we report the crystal structure of an intramolecular (cis) acyl-enzyme complex of TV-1 VP4 at 2.1 A resolution. The structure reveals how the enzyme can recognize its own carboxy-terminus during the VP4/VP3 cleavage event. The methyl sidechains of Ala830(P1) and Ala828(P3) at the VP4/VP3 junction point into complementary shallow and hydrophobic S1 and S3 binding pockets adjacent to the VP4 catalytic residues: nucleophile Ser738 and general base Lys777. The electron density clearly shows that the carbonyl carbon of Ala830 is covalently attached via an ester bond to the Ogamma of Ser738. A highly ordered water molecule in the active site is coordinated in the proper position to act as the deacylating water. A comparative analysis of this intramolecular (cis) acyl-enzyme structure with the previously solved intermolecular (trans) acyl-enzyme structure of infectious pancreatic necrosis virus (IPNV) VP4 explains the narrower specificity observed in the cleavage sites of TV-1 VP4.


Authors: Chung, I.Y.W., Paetzel, M.
Crystal structure of a viral protease intramolecular acyl-enzyme complex. Insights into cis-cleavage at the VP4/VP3 junction of Tellina birnavirus.,Chung IY, Paetzel M J Biol Chem. 2011 Feb 2. PMID:21288899<ref>PMID:21288899</ref>


Description: Structure of a viral protein
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 
</div>
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Wed Oct  6 05:50:27 2010''
<div class="pdbe-citations 3p06" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Tellina virus 1]]
[[Category: Chung IYW]]
[[Category: Paetzel M]]
Retrieved from "https://proteopedia.org/3p06"