The importance of the Q motif in the ATPase activity of a viral helicase.


NS3 proteins of flaviviruses contain motifs which indicate that they possess protease and helicase activities. The helicases are members of the DExD/H box helicase superfamily and NS3 proteins from some flaviviruses have been shown to possess ATPase and helicase activities in vitro. The Q motif is a recently recognised cluster of nine amino acids common to… (More)


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