Figure 12.2.  PCA of SARS-CoV-2 main protease (PDB ID: 6LU7) with withanolide A (A) PCA results for trajectory (B) Simple clustering in PC subspace(C) Table data showing residue-wise loadings for PC1, PC2 and PC3 and residue number at each position (D) Clustering dendogram based on PC1, PC2 and PC3 (E) Dynamical residue cross-correlation map; the correlated residues are in blue, anti-correlated residues are in red; the pairwise residues with higher correlated coefficient (>0.8) and with higher anti-correlated coefficient (≤0.4) are linked with light pink and light blue (Int_mod) (F) Residue-wise loadings for PC1, PC2 and PC3 (G) Table showing pairwise cross-correlation coefficients; higher correlated coefficient value is >0.8 and higher anti-correlated coefficient value is ≤0.4.