1p5w

From Proteopedia

(Difference between revisions)

Revision as of 23:11, 24 December 2014

The structures of host range controlling regions of the capsids of canine and feline parvoviruses and mutants

Structural highlights

1p5w is a 2 chain structure with sequence from Canine parvovirus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
NonStd Res:
Related:	1p5y
Resources:	FirstGlance, OCA, RCSB, PDBsum

Function

[COAT_PAVCD] Capsid protein self-assembles to form an icosahedral capsid with a T=1 symmetry, about 22 nm in diameter, and consisting of 60 copies of two size variants of the capsid proteins, VP1 and VP2, which differ by the presence of an N-terminal extension in the minor protein VP1. The capsid encapsulates the genomic ssDNA. Capsid proteins are responsible for the attachment to host cell receptor TFRC. This attachment induces virion internalization predominantly through clathrin-endocytosis. Binding to the host receptors also induces capsid rearrangements leading to surface exposure of VP1 N-terminus, specifically its phospholipase A2-like region and nuclear localization signal(s). VP1 N-terminus might serve as a lipolytic enzyme to breach the endosomal membrane during entry into host cell (By similarity). Intracytoplasmic transport involves microtubules and interaction between capsid proteins and host dynein. Exposure of nuclear localization signal probably allows nuclear import of capsids.^[1] ^[2] ^[3]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

Canine parvovirus (CPV) and feline panleukopenia virus (FPV) differ in their ability to infect dogs and dog cells. Canine cell infection is a specific property of CPV and depends on the ability of the virus to bind the canine transferrin receptor (TfR), as well as other unidentified factors. Three regions in the capsid structure, located around VP2 residues 93, 300, and 323, can all influence canine TfR binding and canine cell infection. These regions were compared in the CPV and FPV capsid structures that have been determined, as well as in two new structures of CPV capsids that contain substitutions of the VP2 Asn-93 to Asp and Arg, respectively. The new structures, determined by X-ray crystallography to 3.2 and 3.3 A resolutions, respectively, clearly showed differences in the interactions of residue 93 with an adjacent loop on the capsid surface. Each of the three regions show small differences in structure, but each appears to be structurally independent of the others, and the changes likely act together to affect the ability of the capsid to bind the canine TfR and to infect canine cells. This emphasizes the complex nature of capsid alterations that change the virus-cell interaction to allow infection of cells from different hosts.

Structures of host range-controlling regions of the capsids of canine and feline parvoviruses and mutants.,Govindasamy L, Hueffer K, Parrish CR, Agbandje-McKenna M J Virol. 2003 Nov;77(22):12211-21. PMID:14581558^[4]

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

References

↑ Vihinen-Ranta M, Wang D, Weichert WS, Parrish CR. The VP1 N-terminal sequence of canine parvovirus affects nuclear transport of capsids and efficient cell infection. J Virol. 2002 Feb;76(4):1884-91. PMID:11799183
↑ Suikkanen S, Aaltonen T, Nevalainen M, Valilehto O, Lindholm L, Vuento M, Vihinen-Ranta M. Exploitation of microtubule cytoskeleton and dynein during parvoviral traffic toward the nucleus. J Virol. 2003 Oct;77(19):10270-9. PMID:12970411
↑ Harbison CE, Lyi SM, Weichert WS, Parrish CR. Early steps in cell infection by parvoviruses: host-specific differences in cell receptor binding but similar endosomal trafficking. J Virol. 2009 Oct;83(20):10504-14. doi: 10.1128/JVI.00295-09. Epub 2009 Aug 5. PMID:19656887 doi:http://dx.doi.org/10.1128/JVI.00295-09
↑ Govindasamy L, Hueffer K, Parrish CR, Agbandje-McKenna M. Structures of host range-controlling regions of the capsids of canine and feline parvoviruses and mutants. J Virol. 2003 Nov;77(22):12211-21. PMID:14581558

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1p5w"

@@ Line 3: / Line 3: @@
 == Structural highlights ==
 <table><tr><td colspan='2'>[[1p5w]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Canine_parvovirus Canine parvovirus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1P5W OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1P5W FirstGlance]. <br>
-</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene><br>
+</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
-<tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=3DR:1,2-DIDEOXYRIBOFURANOSE-5-PHOSPHATE'>3DR</scene></td></tr>
+<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=3DR:1,2-DIDEOXYRIBOFURANOSE-5-PHOSPHATE'>3DR</scene></td></tr>
-<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1p5y|1p5y]]</td></tr>
+<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1p5y|1p5y]]</td></tr>
-<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1p5w FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1p5w OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1p5w RCSB], [http://www.ebi.ac.uk/pdbsum/1p5w 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=1p5w FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1p5w OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1p5w RCSB], [http://www.ebi.ac.uk/pdbsum/1p5w PDBsum]</span></td></tr>
-<table>
+</table>
+== Function ==
+[[http://www.uniprot.org/uniprot/COAT_PAVCD COAT_PAVCD]] Capsid protein self-assembles to form an icosahedral capsid with a T=1 symmetry, about 22 nm in diameter, and consisting of 60 copies of two size variants of the capsid proteins, VP1 and VP2, which differ by the presence of an N-terminal extension in the minor protein VP1. The capsid encapsulates the genomic ssDNA. Capsid proteins are responsible for the attachment to host cell receptor TFRC. This attachment induces virion internalization predominantly through clathrin-endocytosis. Binding to the host receptors also induces capsid rearrangements leading to surface exposure of VP1 N-terminus, specifically its phospholipase A2-like region and nuclear localization signal(s). VP1 N-terminus might serve as a lipolytic enzyme to breach the endosomal membrane during entry into host cell (By similarity). Intracytoplasmic transport involves microtubules and interaction between capsid proteins and host dynein. Exposure of nuclear localization signal probably allows nuclear import of capsids.<ref>PMID:11799183</ref> <ref>PMID:12970411</ref> <ref>PMID:19656887</ref>
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 34: / Line 36: @@
 </StructureSection>
 [[Category: Canine parvovirus]]
-[[Category: Agbandje-McKenna, M.]]
+[[Category: Agbandje-McKenna, M]]
-[[Category: Govindasamy, L.]]
+[[Category: Govindasamy, L]]
-[[Category: Canine parvovirus]]
 [[Category: Icosahedral virus]]
 [[Category: Parvovirade]]
 [[Category: Virus-dna complex]]

1p5w

From Proteopedia

Revision as of 23:11, 24 December 2014

The structures of host range controlling regions of the capsids of canine and feline parvoviruses and mutants

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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