UNSPECIFIED. (2005) Part of the C-terminal tall of the envelope gp41 transmembrane glycoprotein of human immunodeficiency virus type 1 is exposed on the surface of infected cells and is involved in virus-mediated cell fusion. JOURNAL OF GENERAL VIROLOGY, 86 (Part 1). pp. 131-138. ISSN 0022-1317

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Abstract

The C-terminal tail of the gp41 transmembrane glycoprotein of the human immunodeficiency virus type 1 (HIV-1) virion is usually thought to be inside the virion, but it has been shown recently that part of the tail is exposed on the virion exterior. Here, using a panel of antibodies, it was demonstrated that the same part of the tail is exposed on the surface of HIV-1-infected C8166 lymphoblastoid cells and HeLa cells infected with a gp41-expressing vaccinia. virus recombinant. Both types of infected cell failed to react with p117 matrix protein-specific IgGs until permeabilized with saponin, confirming the integrity of the plasma membrane. Cell-surface exposure of the gp41 tail was independently demonstrated by inhibition of HIV-1-mediated cell-cell fusion by one of the gp41 tail-specific antibodies. These data also implicate the exposed region of the gp41 C-terminal tail either directly or indirectly in the viral fusion process. Its surface exposure suggests that the gp41 C-terminal tail may be a candidate for immune intervention or chemotherapy of infection.

Item Type:	Journal Article
Subjects:	T Technology > TP Chemical technology Q Science > QR Microbiology > QR355 Virology
Journal or Publication Title:	JOURNAL OF GENERAL VIROLOGY
Publisher:	SOC GENERAL MICROBIOLOGY
ISSN:	0022-1317
Official Date:	January 2005
Volume:	86
Number:	Part 1
Number of Pages:	8
Page Range:	pp. 131-138
Identification Number:	10.1099/vir.0.80439-0
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/7484

Data sourced from Thomson Reuters' Web of Knowledge

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