View source for 3jb7


==In situ structures of the segmented genome and RNA polymerase complex inside a dsRNA virus==
<SX load='3jb7' size='340' side='right' viewer='molstar' caption='[[3jb7]], [[Resolution|resolution]] 4.00&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3jb7]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Bombyx_mori_cypovirus_1 Bombyx mori cypovirus 1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3JB7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3JB7 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CTP:CYTIDINE-5-TRIPHOSPHATE'>CTP</scene>, <scene name='pdbligand=GTP:GUANOSINE-5-TRIPHOSPHATE'>GTP</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=3jb7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3jb7 OCA], [https://pdbe.org/3jb7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3jb7 RCSB], [https://www.ebi.ac.uk/pdbsum/3jb7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3jb7 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/D0EZK6_CPVBM D0EZK6_CPVBM] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Viruses in the Reoviridae, like the triple-shelled human rotavirus and the single-shelled insect cytoplasmic polyhedrosis virus (CPV), all package a genome of segmented double-stranded RNAs (dsRNAs) inside the viral capsid and carry out endogenous messenger RNA synthesis through a transcriptional enzyme complex (TEC). By direct electron-counting cryoelectron microscopy and asymmetric reconstruction, we have determined the organization of the dsRNA genome inside quiescent CPV (q-CPV) and the in situ atomic structures of TEC within CPV in both quiescent and transcribing (t-CPV) states. We show that the ten segmented dsRNAs in CPV are organized with ten TECs in a specific, non-symmetric manner, with each dsRNA segment attached directly to a TEC. The TEC consists of two extensively interacting subunits: an RNA-dependent RNA polymerase (RdRP) and an NTPase VP4. We find that the bracelet domain of RdRP undergoes marked conformational change when q-CPV is converted to t-CPV, leading to formation of the RNA template entry channel and access to the polymerase active site. An amino-terminal helix from each of two subunits of the capsid shell protein (CSP) interacts with VP4 and RdRP. These findings establish the link between sensing of environmental cues by the external proteins and activation of endogenous RNA transcription by the TEC inside the virus.

In situ structures of the segmented genome and RNA polymerase complex inside a dsRNA virus.,Zhang X, Ding K, Yu X, Chang W, Sun J, Zhou ZH Nature. 2015 Nov 26;527(7579):531-4. doi: 10.1038/nature15767. Epub 2015 Oct 26. PMID:26503045<ref>PMID:26503045</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3jb7" style="background-color:#fffaf0;"></div>

==See Also==
*[[Virus coat proteins 3D structures|Virus coat proteins 3D structures]]
== References ==
<references/>
__TOC__
</SX>
[[Category: Bombyx mori cypovirus 1]]
[[Category: Large Structures]]
[[Category: Chang W]]
[[Category: Ding K]]
[[Category: Sun JC]]
[[Category: Yu XK]]
[[Category: Zhang X]]
[[Category: Zhou ZH]]