View source for 3iyj


==Bovine papillomavirus type 1 outer capsid==
<SX load='3iyj' size='340' side='right' viewer='molstar' caption='[[3iyj]], [[Resolution|resolution]] 4.20&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3iyj]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Deltapapillomavirus_4 Deltapapillomavirus 4]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3IYJ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3IYJ 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]] 4.2&#8491;</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=3iyj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3iyj OCA], [https://pdbe.org/3iyj PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3iyj RCSB], [https://www.ebi.ac.uk/pdbsum/3iyj PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3iyj ProSAT]</span></td></tr>
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== Function ==
[https://www.uniprot.org/uniprot/VL1_BPV1 VL1_BPV1] Forms an icosahedral capsid with a T=7 symmetry and about 55 nm diameter. The capsid is composed of 72 pentamers linked to each other by disulfide bonds and associated with L2 proteins. The capsid encapsulates the genomic DNA, but does not bind DNA. Essential for the initial attachment to the host cell (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/iy/3iyj_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=3iyj ConSurf].
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== Publication Abstract from PubMed ==
Papillomaviruses, members of a group of dsDNA viruses associated with epithelial growths and tumors, have compact capsids assembled from 72 pentamers of the protein L1. We have determined the structure of bovine papillomavirus by electron cryomicrosopy (cryoEM), at approximately 3.6 A resolution. The density map, obtained from single-particle analysis of approximately 4,000 particle images, shows the trace of the L1 polypeptide chain and reveals how the N- and C-terminal "arms" of a subunit (extensions from its beta-jelly-roll core) associate with a neighboring pentamer. Critical contacts come from the C-terminal arm, which loops out from the core of the subunit, forms contacts (including a disulfide) with two subunits in a neighboring pentamer, and reinserts into the pentamer from which it emanates. This trace corrects one feature of an earlier model. We discuss implications of the structure for virion assembly and for pathways of infectious viral entry. We suggest that it should be possible to obtain image reconstructions of comparable resolution from cryoEM images of asymmetric particles. From the work on papillomavirus described here, we estimate that such a reconstruction will require about 1.5 million images to achieve the same number of averaged asymmetric units; structural variability will increase this number substantially.

Subunit interactions in bovine papillomavirus.,Wolf M, Garcea RL, Grigorieff N, Harrison SC Proc Natl Acad Sci U S A. 2010 Apr 6;107(14):6298-303. Epub 2010 Mar 22. PMID:20308582<ref>PMID:20308582</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 3iyj" style="background-color:#fffaf0;"></div>

==See Also==
*[[Virus coat proteins 3D structures|Virus coat proteins 3D structures]]
== References ==
<references/>
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[[Category: Deltapapillomavirus 4]]
[[Category: Large Structures]]
[[Category: Garcea RL]]
[[Category: Grigorieff N]]
[[Category: Harrison SC]]
[[Category: Wolf M]]