Total hydrogen bonds and amino acids involved in the binding process.

Table 1: Total hydrogen bonds and amino acids involved in the binding process.

ENZYME	NARCISSOSIDE		APIGENIN		REMDESIVIR		REFERENCE Compounds
ENZYME	HBonds	A.A	HBonds	A.A	HBonds	A.A	HBonds	A.A
4KRO	3	Arg310 Glu306	4	Thr406(A), Arg405(A)	10	Ala84 Glu16(2) Lys103, Thr40	6	Ser342(A), Asp116(B), Arg113(B), Arg405(A)
4P16	6	Asn36, Gly37,Cys32, Phe34, Tyr26	4	Lys205, Ala175, His171	2	Ala175	4	Lys205, Ala175, His171
6XBG	12	Phe3, Lys5, Glu288	6	Gly138(B), Glu288(B)	8	Phe3, Arg4, Glu288	8	Arg4(B), Lys5(A), Lys137(A)
7BZ5	13	Glu44, Asp1(L)	5	Pro96 Pro95	14	Gly42, Pro169 Glu150	5	Arg1(L)
7BTF	8	Arg249, Thr246, Pro677, Tyr456, Thr394	5	Thr462, Met629, Asn459, Arg349	4	Tyr619 Asp618 Lys621	///////////	/////////////