AutoDock v4.2.6 AutoDock vina iGEMDOCK v2.1 S. No. Ligands BE (kcal/mol) K d Interacting amino acids BE(kcal/mol) K d Interacting amino acids TE(kcal/mol) VDW HB EI Interacting amino acids 1. Withaferin A –7.56 2.87 µM Thr47, Leu164, Pro188, Gln187, Glu165, Ser189, Met190, Gln191, Leu192, Asn168, Gly167, Leu166 –9.4 129.60 nM Gly126, Leu3, Cys284, Glu286, Arg4, Phe287, Lys5, Tyr280, Ser282, Ser279, Lys136 –116.60 –96.85 –19.75 0 Thr288, Thr290, Glu291, Arg294, Val299, Thr143, Tyr117, Cys116, Gly122, Ala115, Ser123, Gln8, Val150, Leu151, Glu152, Met6, Ser110 2. Withanolide A –8.93 285.01 nM Gly182, Gly183, Tyr184, Glu185, Leu192, Gln191, Met190, Ser189, Gln187, Val50 –10.9 345 nM Leu3, Arg4, Glu286, Tyr280, Phe287, Lys5, Cys284, Lys136, Ser279 –100.1 –84.54 –15.56 0 Phe272, Gly271, Leu268, Lys270, Asn269, Ser282, Leu283, Cys284, Asp285, Glu286, Lys136, Met198, Asn196 3. Withanolide B –8.12 1.12 µM Glu185, Gly183, Gly182, Tyr184, Ser189, Met190, Gln191, Leu192 –9.7 72.23 nM Lys270, Arg267, Leu268, Trp217, Phe218, Arg275, Gln256, Arg216, Thr254, Gly214 –104.12 –93.39 –10.74 0 Gly154, Asn153, Leu151, Glu152, Gly122, Tyr117, Ser123, Ala115, Thr143, Met6, Ser138, Ile140, Gln295, Arg294, Gly298 4. Withanolide D –7.68 2.34 µM Gly182, Tyr184, Glu185, Ser189, Met190, Gln191, Leu192, Glu193 –9.3 145.58 nM Glu54, Asn52, Tyr53, Arg40, Tyr81, Met57, Gln132, Ser131, Arg80, Val197, Thr239, Gly83 –111.44 –98.83 –12.61 0 Gly154, Asn153, Leu151, Glu152, Gln8, Gly122, Ser123,Cys116, Tyr117, Ala115, Thr143, Ile140, Ser138, Gln295, Met6, Arg294 5. Withanolide E –7.72 2.19 µM Glu185, Tyr184, Gly182, Gln132, Glu193, Gly194, Leu192, Gln191, Met190, Ser189 –9.0 240.98 nM Lys82, Gly83, Lys234, Ser131, Gln132, Ala107, Glu54, Tyr81, Arg80, Met57, Val197, Arg40, Thr239, Glu240 –104.61 –85.73 –18.88 0 Met6, Asn112, Ser110, Gln8, Val150, Glu152, Glu109, Thr288, Glu291, Gln295, Thr290, Arg294 6. Withanone –7.41 3.7 µM Glu193, Leu192, Gln191, Met190, Ser189, Glu185, Tyr184, Gly183, Gly182, Gln132 –9.1 212.78 nM Thr254, Arg216, Trp217, Arg275, Phe218, Lys260, Gln256, Leu268, Arg267, Lys270 –109.22 –100.63 –8.59 0 Arg294, Gln295, Ile140, Glu291, Glu152, Gly122, Ala115, Ser123, Met6, Gln8, Ala7, Ser110, Phe111, Val150, Asn112, Tyr149 7. Viscosalactone B –7.34 4.14 µM Leu192, Gly167, Leu166, Glu165, Leu164, Gln191, Met190, Ser189, Pro188, Gln187 –9.5 107.69 nM Lys5, Phe287, Glu286, Lys136, Met198, Asp285, Cys284, Leu283, Ser282, Arg4, Leu278, Ser279, Tyr280, Leu3 –100.67 –85.43 –15.24 0 Tyr125, Met6, Gly126, Lys5, Arg4, Leu3, Lys136, Leu278, Ser279, Tyr280, Cys284, Glu286, Phe287 8. Anaferine –6.19 29.14 µM Gly183, Glu185, Tyr184, Gly182, Gln191, Leu192, Glu193, Gln132 –6.8 10.34 µM Arg294, Gln295, Glu291, Gln8, Ser110, Lys5, Gly126, Ala7, Met6, Ser123, Gly122 –74.07 –60.38 –13.68 0 Tyr280, Leu3, Arg4, Lys5,Gly126, Tyr125, Val124 9. Withasomnine –6.06 36.09 µM Tyr53, Ile51, Ser189, Gln191, Gln187, Pro188, Asp186, Thr47, His41, Leu164, Glu165 –7.1 6.20 µM Arg294, Met6, Gln295, Glu291, Lys5, Asn112, Phe111, Gln8, Val150, Ser110, Leu151 –71.58 –63.14 –8.44 0 Ala79, Val60, Gly194, Met57, Ser58, Glu193, Gln132, Val197, Arg80, Thr195 10. Oberadilol –4.54 469.45 µM Glu185, Tyr184, Gly183, Gly182, Gln132, Glu193, Leu192, Gln191, Met190, Ser189 –8.7 401.24 nM Glu54, Tyr53, Arg40, Gly83, Val197, Arg80, Ser131, Thr239, Ala107, Glu240, Lys234, Lys82, Tyr81 –95.18 –81.58 –13.60 0 Trp217, Arg267, Leu268, Lys270, Phe272, Gly271, Gly273, Gly274, Arg275, Val219 11. Poziotinib –6.41 20.18 µM Thr195, Gly194, Glu193, Leu192, Gln191, Met159, Tyr184, Gly182, Gln132 –8.4 710.54 nM Met190, Gly167, Leu166, Ser189, Glu165, Ala141, Ile140, Phe139, Cys144, Thr47, His41, Pro188, Leu164, Gln187, Gln191 –103.87 –94.39 –9.49 0 Arg275, Gly274, Gly273, Trp217, Thr220, Asn221, Gly271, Lys270, Thr222, Arg267, Leu263