Document Detail

Rotavirus VP6 expressed by PVX vectors in Nicotiana benthamiana coats PVX rods and also assembles into viruslike particles.
MedLine Citation:
PMID:  10793003     Owner:  NLM     Status:  MEDLINE    
The rotavirus major inner capsid protein (VP6) has been expressed in Nicotiana benthamiana plants using vectors based on potato virus X (PVX). VP6 was expressed either as a fusion with the PVX coat protein or from an additional subgenomic promoter inserted to enable both VP6 and PVX coat protein to be expressed independently. Both approaches yielded VP6, which retained the ability to form trimers. VP6 expressed from the subgenomic promoter assembled into paracrystalline sheets and tubes. Expression as a fusion protein yielded PVX rods that presented an external "overcoat" of VP6, but unexpectedly, some rotavirus protein also assembled into icosahedral viruslike particles (VLPs). The assembly of viral protein into VLPs suggests that prior display of VP6 on the flexuous PVX rod facilitates the subsequent assembly of VP6 into stable icosahedral particles.
G J O'Brien; C J Bryant; C Voogd; H B Greenberg; R C Gardner; A R Bellamy
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Virology     Volume:  270     ISSN:  0042-6822     ISO Abbreviation:  Virology     Publication Date:  2000 May 
Date Detail:
Created Date:  2000-06-13     Completed Date:  2000-06-13     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0110674     Medline TA:  Virology     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  444-53     Citation Subset:  IM    
Copyright Information:
Copyright 2000 Academic Press.
Biochemistry and Molecular Biology and Plant Science Research Groups, University of Auckland, New Zealand.
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MeSH Terms
Antigens, Viral*
Capsid / physiology*
Capsid Proteins*
Genetic Vectors
Plants, Toxic*
Potexvirus / physiology*
Rotavirus / physiology*
Tobacco / virology*
Virus Assembly
Reg. No./Substance:
0/Antigens, Viral; 0/Capsid Proteins; 0/VP6 protein, Rotavirus

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