... for the activity of fusion peptides [31,34,35] and in order to investigatewhether the different behavior of the peptides in inducinglipid mixing of LUV, lowering the TH of DiPoPtdEth, and promoting ... with an increase in the size of the vesicles, confirming that the ability of the peptides to inducelipid mixing is the result of membrane fusion. In order toshed light into their mechanism of action, ... curved stalk intermediate.This property correlated well with the infectivity of in uenzavirus containing single amino-acid mutations in the fusionpeptide segment of hemagglutinin [16]. Here...