Subcellular localization of the nonstructural protein NS3 of African horsesickness virus

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Authors

Stoltz, M.A.
Van der Merwe, Christiaan F.
Coetzee, J.

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Volume Title

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Published by the Agricultural Research Council, Onderstepoort Veterinary Institute

Abstract

The subcellular localization of the minor nonstructural protein NS3 of African horsesickness virus (AHSV) has been investigated by means of immunogold electron-microscopical analysis. NS3 was observed in perturbed regions of the plasma membrane of AHSV-infected VERO cells, and its presence appears to be associated with events of viral release. These events are budding, whereby released viruses acquire fragments from the host-cell membrane, as well as by the extrusion of nonenveloped particles through the cell membrane. The membrane association of NS3 was confirmed by its detection in the disrupted plasma membranes of cells infected with an NS3 baculovirus recombinant. The absence of NS3 on intact cell membranes suggests that the protein is not exposed extracellularly.

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Keywords

Veterinary medicine, African horsesickness virus (AHSV), Non-structural protein 3 (NS3), NS3, Subcellular localization

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Citation

Stoltz, MA, Van der Merwe, CF, Coetzee, J & Huismans, H 1996, 'Subcellular localization of the nonstructural protein NS3 of African horsesickness virus’. Onderstepoort Journal of Veterinary Research, vol. 63, no. 1, pp. 57-61.