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A common mechanism for influenza virus fusion activity and inactivation
Ramalho-Santos, João; Nir, Shlomo; Düzgünes, Nejat; Carvalho, Arsélio Pato de; Lima, Maria da Conceição Pedroso deThe fusion of influenza virus (A/PR/8/34 strain) with PC- 12 cells was monitored by a fluorescence assay, and the results were analyzed with a mass-action model which could explain and predict the kinetics of fusion. The model accounted explicitly for the reduction in the fusion rate constant upon exposure of the virus to low pH, either for the virus alone in suspension or for the virus bound to the cells. When...
Kinetic modeling of Sendai virus fusion with PC-12 cells. Effect of pH and temp...
Lima, Maria da Conceição Pedroso de; Ramalho-Santos, João; Martins, Maria de Fátima; Carvalho, Arsélio Pato de; Bairos, Vasco; Nir, ShlomoWe have studied the fusion activity of Sendai virus, a lipid-enveloped paramyxovirus, towards a line of adherent cells designated PC-12. Fusion was monitored by the dequenching of octadecylrhodamine, a fluorescent non-exchangeable probe. The results were analysed with a mass action kinetic model which could explain and predict the kinetics of virus2013cell fusion. When the temperature was lowered from 37°C to 2...
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