Mutations in human parainfluenza virus type 3 hemagglutinin-neuraminidase causing increased receptor binding activity and resistance to the transition state sialic acid analog 4-GU-DANA (Zanamivir).

Abstract excerpt

Entry and fusion of human parainfluenza virus type 3 (HPF3) require the interaction of the viral hemagglutinin-neuraminidase (HN) glycoprotein with its sialic acid receptor. 4-GU-DANA, a potent inhibitor of influenza virus neuraminidase, inhibits not only HPF3 neuraminidase but also the receptor binding activity of HPF3 HN and thus its ability to promote attachment and fusion. We previously generated a...

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