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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Accumulation of Sendai virus glycoproteins in cell-cell contact regions and its role in cell fusion.

Lateral motion of the viral envelope proteins in the target cell membrane was shown recently to be essential for cell fusion by Sendai virus (Henis, Y. I., Herman-Barhom, Y., Aroeti, B., and Gutman, O. (1989) J. Biol. Chem. 264, 17119-17125). To explore the mechanism that gives rise to this requirement, we have now investigated the distribution of Sendai virus envelope proteins (F, the fusion protein, and HN, the hemagglutinin/neuraminidase protein) on human erythrocytes in the course of fusion, using fluorescence microscopy and image analysis. In these studies, both the F and the HN proteins were found to accumulate in cell-cell contact regions, on the time scale of the fusion process. We propose that migration of the viral glycoproteins to cell contact regions and accumulation at the contact sites are essential parts of the fusion mechanism and form the basis to the requirement for their lateral motion in the fusion event.[1]


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