3s7v

From Proteopedia

(Difference between revisions)

Revision as of 11:22, 10 December 2016

Unassembled KI Polyomavirus VP1 Pentamer

Structural highlights

3s7v is a 10 chain structure with sequence from Ki polyoma virus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	3bwr, 1vps, 3nxg, 3s7x
Gene:	VP1 (KI polyoma virus)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[VP1_POVKI] Forms an icosahedral capsid with a T=7 symmetry and a 40 nm diameter. The capsid is composed of 72 pentamers linked to each other by disulfide bonds and associated with VP2 or VP3 proteins. Interacts with sialic acids on the cell surface to provide virion attachment to target cell. Once attached, the virion is internalized by endocytosis and traffics to the endoplasmic reticulum. Inside the endoplasmic reticulum, the protein folding machinery isomerizes VP1 interpentamer disulfide bonds, thereby triggering initial uncoating. Next, the virion uses the endoplasmic reticulum-associated degradation machinery to probably translocate in the cytosol before reaching the nucleus. Nuclear entry of the viral DNA involves the selective exposure and importin recognition of VP2/Vp3 nuclear localization signal. In late phase of infection, neo-synthesized VP1 encapsulates replicated genomic DNA in the nucleus, and participates in rearranging nucleosomes around the viral DNA (By similarity).

Publication Abstract from PubMed

The Karolinska Institutet and Washington University polyomaviruses (KIPyV and WUPyV, respectively) are recently discovered human viruses that infect the respiratory tract. Although they have not yet been linked to disease, they are prevalent in populations worldwide, with initial infection occurring in early childhood. Polyomavirus capsids consist of 72 pentamers of the major capsid protein viral protein 1 (VP1), which determines antigenicity and receptor specificity. The WUPyV and KIPyV VP1 proteins are distant in evolution from VP1 proteins of known structure such as simian virus 40 or murine polyomavirus. We present here the crystal structures of unassembled recombinant WUPyV and KIPyV VP1 pentamers at resolutions of 2.9 and 2.55 A, respectively. The WUPyV and KIPyV VP1 core structures fold into the same beta-sandwich that is a hallmark of all polyomavirus VP1 proteins crystallized to date. However, differences in sequence translate into profoundly different surface loop structures in KIPyV and WUPyV VP1 proteins. Such loop structures have not been observed for other polyomaviruses, and they provide initial clues about the possible interactions of these viruses with cell surface receptors.

Structures of the major capsid proteins of the human karolinska institutet and washington university polyomaviruses.,Neu U, Wang J, Macejak D, Garcea RL, Stehle T J Virol. 2011 Jul;85(14):7384-92. Epub 2011 May 4. PMID:21543504^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Neu U, Wang J, Macejak D, Garcea RL, Stehle T. Structures of the major capsid proteins of the human karolinska institutet and washington university polyomaviruses. J Virol. 2011 Jul;85(14):7384-92. Epub 2011 May 4. PMID:21543504 doi:10.1128/JVI.00382-11

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 See Also
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3s7v"

@@ Line 1: / Line 1: @@
 ==Unassembled KI Polyomavirus VP1 Pentamer==
 <StructureSection load='3s7v' size='340' side='right' caption='[[3s7v]], [[Resolution|resolution]] 2.55&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[3s7v]] is a 10 chain structure with sequence from [http://en.wikipedia.org/wiki/Ki_polyomavirus Ki polyomavirus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3S7V OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3S7V FirstGlance]. <br>
+<table><tr><td colspan='2'>[[3s7v]] is a 10 chain structure with sequence from [http://en.wikipedia.org/wiki/Ki_polyoma_virus Ki polyoma virus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3S7V OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3S7V FirstGlance]. <br>
 </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3bwr|3bwr]], [[1vps|1vps]], [[3nxg|3nxg]], [[3s7x|3s7x]]</td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">VP1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=423445 KI polyomavirus])</td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">VP1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=423445 KI polyoma virus])</td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3s7v FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3s7v OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3s7v RCSB], [http://www.ebi.ac.uk/pdbsum/3s7v PDBsum]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3s7v FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3s7v OCA], [http://pdbe.org/3s7v PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3s7v RCSB], [http://www.ebi.ac.uk/pdbsum/3s7v PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3s7v ProSAT]</span></td></tr>
 </table>
+== Function ==
+[[http://www.uniprot.org/uniprot/VP1_POVKI VP1_POVKI]] Forms an icosahedral capsid with a T=7 symmetry and a 40 nm diameter. The capsid is composed of 72 pentamers linked to each other by disulfide bonds and associated with VP2 or VP3 proteins. Interacts with sialic acids on the cell surface to provide virion attachment to target cell. Once attached, the virion is internalized by endocytosis and traffics to the endoplasmic reticulum. Inside the endoplasmic reticulum, the protein folding machinery isomerizes VP1 interpentamer disulfide bonds, thereby triggering initial uncoating. Next, the virion uses the endoplasmic reticulum-associated degradation machinery to probably translocate in the cytosol before reaching the nucleus. Nuclear entry of the viral DNA involves the selective exposure and importin recognition of VP2/Vp3 nuclear localization signal. In late phase of infection, neo-synthesized VP1 encapsulates replicated genomic DNA in the nucleus, and participates in rearranging nucleosomes around the viral DNA (By similarity).
 <div style="background-color:#fffaf0;">
 == Publication Abstract from PubMed ==
@@ Line 15: / Line 18: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 3s7v" style="background-color:#fffaf0;"></div>
 ==See Also==
@@ Line 22: / Line 26: @@
 __TOC__
 </StructureSection>
-[[Category: Ki polyomavirus]]
+[[Category: Ki polyoma virus]]
 [[Category: Neu, U]]
 [[Category: Stehle, T]]

3s7v

From Proteopedia

Revision as of 11:22, 10 December 2016

Unassembled KI Polyomavirus VP1 Pentamer

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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