Fig 4.
Organization of pestiviral NS3. CSFV NS3 extends from residue G1590 to L2272. Active side residues of the serine protease moiety include H1658, D1686, and S1752. Characteristic motives of the helicase start at residue 1818 with Walker motive A. The active-side DEYH box starts with D1910. Internal NS3 cleavages were mapped to residues L/K1748/9 and L/M1781/2.