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. 2022 Feb 9;12:2145. doi: 10.1038/s41598-022-06104-y

Figure 4.

Figure 4

Structural analysis of interaction of aloin isomers with SARS-CoV-2 PLpro. (A) Interaction of aloin A orientation-1 with Tyr268 of PLpro through hydrogen bonding. (B) Interaction of aloin A orientation-2 with Tyr268 of PLpro through hydrogen bonding. (C) Interaction of aloin B orientation-1 with Tyr268 of PLpro through hydrogen bonding. (D) Interaction of aloin B orientation-2 with Tyr268 of PLpro through hydrogen bonding. Site view and ligand interaction maps were presented to illustrate the hydrogen bonding.