2df7

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{{STRUCTURE_2df7| PDB=2df7 | SCENE= }}
{{STRUCTURE_2df7| PDB=2df7 | SCENE= }}
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'''Crystal structure of infectious bursal disease virus VP2 subviral particle'''
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===Crystal structure of infectious bursal disease virus VP2 subviral particle===
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==Overview==
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The structural protein VP2 of infectious bursal disease virus (IBDV) spontaneously forms a dodecahedral T=1 subviral particle (SVP), and is a primary immunogen of the virus. In this study, the structure of IBDV SVP was determined in a cubic crystal and refined to 2.6A resolution. It contains 20 independent VP2 subunits in a crystallographic asymmetric unit. Each subunit is folded mainly into a shell domain and a protrusion domain, both with the Swiss-roll topology, plus a small helical base domain. Three VP2 subunits constitute a tight trimer, which is the building block of IBDV (sub)viral particles. The structure revealed a calcium ion bound to three pairs of symmetry-related Asp31 and Asp174 to stabilize the VP2 trimer. Our results of treatment of SVP with EGTA, a Ca(2+)-chelating reagent, indicated that the metal-ion may be important not only in maintaining highly stable quaternary structure but also in regulating the swelling and dissociation of the icosahedral particles. A Ca(2+)-dependent assembly pathway was thus proposed, which involves further interactions between the trimers. The 20 independent subunits showed conformational variations, with the surface loops of the protrusion domain being the most diverse. These loops are targets of the neutralizing antibodies. Several common interactions between the surface loops were clearly observed, suggesting a possible major conformation of the immunogenic epitopes.
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(as it appears on PubMed at http://www.pubmed.gov), where 16677827 is the PubMed ID number.
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{{ABSTRACT_PUBMED_16677827}}
==About this Structure==
==About this Structure==
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==Reference==
==Reference==
Crystal structure of infectious bursal disease virus VP2 subviral particle at 2.6A resolution: implications in virion assembly and immunogenicity., Lee CC, Ko TP, Chou CC, Yoshimura M, Doong SR, Wang MY, Wang AH, J Struct Biol. 2006 Jul;155(1):74-86. Epub 2006 Mar 31. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16677827 16677827]
Crystal structure of infectious bursal disease virus VP2 subviral particle at 2.6A resolution: implications in virion assembly and immunogenicity., Lee CC, Ko TP, Chou CC, Yoshimura M, Doong SR, Wang MY, Wang AH, J Struct Biol. 2006 Jul;155(1):74-86. Epub 2006 Mar 31. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16677827 16677827]
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Purification, crystallization and preliminary X-ray analysis of immunogenic virus-like particles formed by infectious bursal disease virus (IBDV) structural protein VP2., Lee CC, Ko TP, Lee MS, Chou CC, Lai SY, Wang AH, Wang MY, Acta Crystallogr D Biol Crystallogr. 2003 Jul;59(Pt 7):1234-7. Epub 2003, Jun 27. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/12832770 12832770]
[[Category: Infectious bursal disease virus]]
[[Category: Infectious bursal disease virus]]
[[Category: Single protein]]
[[Category: Single protein]]
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[[Category: Immunogen]]
[[Category: Immunogen]]
[[Category: Surface loop]]
[[Category: Surface loop]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 00:18:34 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 22:34:18 2008''

Revision as of 19:34, 27 July 2008

Image:2df7.png

Template:STRUCTURE 2df7

Crystal structure of infectious bursal disease virus VP2 subviral particle

Template:ABSTRACT PUBMED 16677827

About this Structure

2DF7 is a Single protein structure of sequence from Infectious bursal disease virus. Full crystallographic information is available from OCA.

Reference

Crystal structure of infectious bursal disease virus VP2 subviral particle at 2.6A resolution: implications in virion assembly and immunogenicity., Lee CC, Ko TP, Chou CC, Yoshimura M, Doong SR, Wang MY, Wang AH, J Struct Biol. 2006 Jul;155(1):74-86. Epub 2006 Mar 31. PMID:16677827

Purification, crystallization and preliminary X-ray analysis of immunogenic virus-like particles formed by infectious bursal disease virus (IBDV) structural protein VP2., Lee CC, Ko TP, Lee MS, Chou CC, Lai SY, Wang AH, Wang MY, Acta Crystallogr D Biol Crystallogr. 2003 Jul;59(Pt 7):1234-7. Epub 2003, Jun 27. PMID:12832770

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