MERS: Middle East respiratory syndrome; SARS-CoV-1: severe acute respiratory coronavirus; SARS-CoV-2: severe acute respiratory coronavirus; SB: shown below. High to low pairwise amino-acid identity are coloured coded respectively by contrasting green to red backgrounds.
The sequence identity is not affected by the order in which paired sequences are compared so only one-way comparisons are shown to avoid redundancies; the abbreviation ‘SB’ is used when the pairwise amino-acid identity in question is already shown in a further cell of the table.