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. 2022 Jul 12;1268:133709. doi: 10.1016/j.molstruc.2022.133709

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Fig. 4: — The binding pocket of M^pro is show in the pink surface. The different identified regions are colored differently: Region I in yellow, region II in blue, region III in green, region IV in red. The extended lids covering in this pocket are shown in sticks and marked in the one-letter code.