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Comparison of SARS-CoV and SARS-CoV-2 cleavage site sequences. Sequences are shown for PLpro and 3CLpro based on literature data [15,16]. Cleavage positions are shown by asterisks, the sequences enclosed by the lines were used to prepare sequence logos. P4-P4’ substrate residues are numbered according to the nomenclature of Schechter and Berger [15].
