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

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Dilation of the influenza hemagglutinin fusion pore revealed by the kinetics of individual cell-cell fusion events.

We have monitored kinetics of fusion between cell pairs consisting of a single influenza hemaglutinin (HA)-expressing cell and a single erythrocyte (RBC) that had been labeled with both a fluorescent lipid (Dil) in the membrane and a fluorescent solute (calcein) in the aqueous space. Initial fusion pore opening between the RBC and HA-expressing cell produced a change in RBC membrane potential (delta psi) that was monitored by a decrease in Dil fluorescence. This event was followed by two distinct stages of fusion pore dilation: the flux of fluorescent lipid (phi L) and the flux of a large aqueous fluorescent dye (phi s). We have analyzed the kinetics of events that occur as a result of transitions between a fusion pore (FP) and a solute permissive fusion pore (FPs). Our data are consistent with a fusion pore comprising six HA trimers.[1]

References

  1. Dilation of the influenza hemagglutinin fusion pore revealed by the kinetics of individual cell-cell fusion events. Blumenthal, R., Sarkar, D.P., Durell, S., Howard, D.E., Morris, S.J. J. Cell Biol. (1996) [Pubmed]
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