Table 3.

Specific interaction type of phytochemicals with NS3 helicase of ZIKV (PDB: 5JRZ).

S. no.	Compounds	Interacting amino acids of NS3 helicase and distances	Hydrophobic contacts
1	Ellagic acid	Arg459 (2.1), Gln455 (2.4), Glu231 (1.8 & 1.9), Arg202 (2.1), Thr201 (2.5), Gly199 (2.8), Ala198 (2.8), Leu194 (2.0), and His195 (2.1)	Arg776, Thr790, Leu858, Cys775, Leu777, Lys745, Asp855, Thr854, Met766, Leu844, Val726, Met793, Cys797, Ala743, Leu792, Leu718, Met1002, and Gly796
2	Hypericin	Glu286 (2.7 & 3.4), Gly415 (2.6), Glu231, Thr201 (2.4), and Lys200 (2.2 & 2.3)	Gly415, Glu231, Ala416, Arg462, Arg202, Gly197, Asn417, and Gly199
3	Pentagalloylglucose	Asp410 (1.9 & 2.6), Met414 (2.0), Asp540 (1.9, 2.6 & 2.1), and Arg226 (2.0 & 2.1)	Asp291, Val227, Glu413, Arg388, Thr225, Ile411, Phe391, Cys262, Ala264, and Phe289