2btl

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{{STRUCTURE_2btl| PDB=2btl | SCENE= }}
{{STRUCTURE_2btl| PDB=2btl | SCENE= }}
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'''CRYSTAL STRUCTURE OF THE N-TERMINAL DOMAIN OF IBV CORONAVIRUS NUCLEOCAPSID'''
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===CRYSTAL STRUCTURE OF THE N-TERMINAL DOMAIN OF IBV CORONAVIRUS NUCLEOCAPSID===
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==Overview==
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The coronavirus nucleocapsid (N) protein packages viral genomic RNA into a ribonucleoprotein complex. Interactions between N proteins and RNA are thus crucial for the assembly of infectious virus particles. The 45 kDa recombinant nucleocapsid N protein of coronavirus infectious bronchitis virus (IBV) is highly sensitive to proteolysis. We obtained a stable fragment of 14.7 kDa spanning its N-terminal residues 29-160 (IBV-N29-160). Like the N-terminal RNA binding domain (SARS-N45-181) of the severe acute respiratory syndrome virus (SARS-CoV) N protein, the crystal structure of the IBV-N29-160 fragment at 1.85 A resolution reveals a protein core composed of a five-stranded antiparallel beta sheet with a positively charged beta hairpin extension and a hydrophobic platform that are probably involved in RNA binding. Crosslinking studies demonstrate the formation of dimers, tetramers, and higher multimers of IBV-N. A model for coronavirus shell formation is proposed in which dimerization of the C-terminal domain of IBV-N leads to oligomerization of the IBV-nucleocapsid protein and viral RNA condensation.
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(as it appears on PubMed at http://www.pubmed.gov), where 16338414 is the PubMed ID number.
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{{ABSTRACT_PUBMED_16338414}}
==About this Structure==
==About this Structure==
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[[Category: Rna-binding]]
[[Category: Rna-binding]]
[[Category: Viral nucleoprotein]]
[[Category: Viral nucleoprotein]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 20:46:44 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 20:39:22 2008''

Revision as of 17:39, 27 July 2008

Image:2btl.png

Template:STRUCTURE 2btl

CRYSTAL STRUCTURE OF THE N-TERMINAL DOMAIN OF IBV CORONAVIRUS NUCLEOCAPSID

Template:ABSTRACT PUBMED 16338414

About this Structure

2BTL is a Single protein structure of sequence from Infectious bronchitis virus. Full crystallographic information is available from OCA.

Reference

The nucleocapsid protein of coronavirus infectious bronchitis virus: crystal structure of its N-terminal domain and multimerization properties., Fan H, Ooi A, Tan YW, Wang S, Fang S, Liu DX, Lescar J, Structure. 2005 Dec;13(12):1859-68. PMID:16338414

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