In silico molecular docking and molecular dynamics examination of Andrographis paniculata compounds of Andrographolide, Neoandrographolide, and 5-hydroxy-7,8,2',3'-tetramethoxyflavone inhibition activity to SARS-CoV-2 main protease

Abstract

In this work, Andrographis paniculata compounds of Andrographolide, Neoandrographolide, and 5-hydroxy-7, 8, 2', 3'-tetramethoxyflavone inhibition activity to SARS CoV-2 main protease were examined through in silico molecular docking and molecular dynamics simulation, with Remdesivir as control ligand. Docking score and MMGBSA were examined as well as molecular dynamics parameters: RMSD, RMSF and Protein ligand contact fraction. Our study found that Andrographis paniculata compounds of Andrographolide, Neoandrographolide, and 5-hydroxy-7, 8, 2', 3'-tetramethoxyflavone have comparable inhibition activity to SARS CoV-2 main protease in comparison to Remdesivir. 5-hydroxy-7, 8, 2', 3'-tetramethoxyflavone has the lowest docking score, which was further validated by protein ligand contact fraction examination, although MMGBSA score is lowest for Remdesivir.