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. 1992 Nov 26;360(6402):358-61.
doi: 10.1038/360358a0.

Inhibition of furin-mediated cleavage activation of HIV-1 glycoprotein gp160

S Hallenberger  1 , V Bosch, H Angliker, E Shaw, H D Klenk, W Garten
Affiliations

Inhibition of furin-mediated cleavage activation of HIV-1 glycoprotein gp160

S Hallenberger et al. Nature. .

Abstract

The envelope glycoprotein of human immunodeficiency virus (HIV) initiates infection by mediating fusion of the viral envelope with the cell membrane. Fusion activity requires proteolytic cleavage of the gp160 protein into gp120 and gp41 at a site containing several arginine and lysine residues. Activation at basic cleavage sites is observed with many membrane proteins of cellular and viral origin. We have recently found that the enzyme activating the haemagglutinin of fowl plague virus (FPV), an avian influenza virus, is furin. Furin, a subtilisin-like eukaryotic endoprotease, has a substrate specificity for the consensus amino-acid sequence Arg-X-Lys/Arg-Arg at the cleavage site. We show here that the glycoprotein of HIV-1, which has the same protease recognition motif as the FPV haemagglutinin, is also activated by furin.

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