View source for 1uon


==REOVIRUS POLYMERASE LAMBDA-3 LOCALIZED BY ELECTRON CRYOMICROSCOPY OF VIRIONS AT 7.6-A RESOLUTION==
<SX load='1uon' size='340' side='right' viewer='molstar' caption='[[1uon]], [[Resolution|resolution]] 7.60&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1uon]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Reovirus_sp. Reovirus sp.] and [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1UON OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1UON FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 7.6&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CH1:3-DEOXY-CYTIDINE-5-TRIPHOSPHATE'>CH1</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</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=1uon FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1uon OCA], [https://pdbe.org/1uon PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1uon RCSB], [https://www.ebi.ac.uk/pdbsum/1uon PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1uon ProSAT]</span></td></tr>
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== Function ==
[https://www.uniprot.org/uniprot/Q8V1A3_9REOV Q8V1A3_9REOV] 
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== Publication Abstract from PubMed ==
Reovirus is an icosahedral, double-stranded (ds) RNA virus that uses viral polymerases packaged within the viral core to transcribe its ten distinct plus-strand RNAs. To localize these polymerases, the structure of the reovirion was refined to a resolution of 7.6 A by cryo-electron microscopy (cryo-EM) and three-dimensional (3D) image reconstruction. X-ray crystal models of reovirus proteins, including polymerase lambda 3, were then fitted into the density map. Each copy of lambda 3 was found anchored to the inner surface of the icosahedral core shell, making major contacts with three molecules of shell protein lambda 1 and overlapping, but not centering on, a five-fold axis. The overlap explains why only one copy of lambda 3 is bound per vertex. lambda 3 is furthermore oriented with its transcript exit channel facing a small channel through the lambda 1 shell, suggesting how the nascent RNA is passed into the large external cavity of the pentameric capping enzyme complex formed by protein lambda 2.

Reovirus polymerase lambda 3 localized by cryo-electron microscopy of virions at a resolution of 7.6 A.,Zhang X, Walker SB, Chipman PR, Nibert ML, Baker TS Nat Struct Biol. 2003 Dec;10(12):1011-8. Epub 2003 Nov 9. PMID:14608373<ref>PMID:14608373</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 1uon" style="background-color:#fffaf0;"></div>

==See Also==
*[[Virus coat proteins 3D structures|Virus coat proteins 3D structures]]
== References ==
<references/>
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[[Category: Large Structures]]
[[Category: Reovirus sp]]
[[Category: Synthetic construct]]
[[Category: Baker TS]]
[[Category: Chipman PR]]
[[Category: Nibert ML]]
[[Category: Walker SB]]
[[Category: Zhang X]]