Article (Scientific journals)
Bovine Herpesvirus 4 Bo10 gene encodes a nonessential viral envelope protein that regulates viral tropism through both positive and negative effects.
Machiels, Bénédicte; Lété, Céline; Defays, Katalin et al.
2011In Journal of Virology, 85 (2), p. 1011-1024
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Abstract :
[en] All gammaherpesviruses encode a glycoprotein positionally homologous to the Epstein-Barr virus gp350 and the Kaposi's Sarcoma associated herpesvirus (KSHV) K8.1. In this study, we characterized that of Bovine Herpesvirus-4 (BoHV-4), encoded by the Bo10 gene. We identified a 180 kDa gene product, gp180, which was incorporated into the virion envelope. A Bo10 deletion virus was viable, but showed a growth deficit associated with reduced binding to epithelial cells. This seemed to reflect an interaction of gp180 with glycosaminoglycans (GAGs), since the Bo10 mutant was both less infectious for GAG(+) cells than the wild-type and more infectious for GAG(-) cells. However, we could not identify a direct interaction between gp180 and GAGs, implying that any direct interaction must be of low affinity. This function of gp180 was very similar to that previously identified for the Murid Herpesvirus 4 gp150, and also to the Epstein-Barr virus gp350 that promotes CD21(+) cell infection and inhibits CD21(-) cell infection. We propose that such proteins generally regulate virion attachment both by binding to cells and by covering another receptor-binding protein until they are displaced. Thus they regulate viral tropism both positively and negatively depending upon the presence or absence of their receptor.
Disciplines :
Microbiology
Author, co-author :
Machiels, Bénédicte  ;  Université de Liège - ULiège > Immunologie et vaccinologie
Lété, Céline ;  Université de Liège - ULiège > Immunologie et vaccinologie
Defays, Katalin;  Université de Liège - ULiège > Immunologie et vaccinologie
Mast, Jan;  Université de Liège - ULiège
Dewals, Benjamin G  ;  Université de Liège - ULiège > Immunologie et vaccinologie
Stevenson, Philip G.;  University of Cambridge (UK) > Department of Pathology > Division of Virology
Vanderplasschen, Alain ;  Université de Liège - ULiège > Immunologie et vaccinologie
Gillet, Laurent  ;  Université de Liège - ULiège > Immunologie et vaccinologie
Language :
English
Title :
Bovine Herpesvirus 4 Bo10 gene encodes a nonessential viral envelope protein that regulates viral tropism through both positive and negative effects.
Publication date :
2011
Journal title :
Journal of Virology
ISSN :
0022-538X
eISSN :
1098-5514
Publisher :
American Society for Microbiology (ASM), Washington, United States - District of Columbia
Volume :
85
Issue :
2
Pages :
1011-1024
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 15 November 2010

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