Figure 1 Multiple sequence alignment for the S2 subunit fragment of SARS-CoV-1 spike glycoprotein with other relevant coronaviruses MERS: Middle East respiratory syndrome; SARS: severe acute respiratory coronavirus 1; SARS-CoV-2: severe acute respiratory coronavirus 2. The name of the viruses, for which sequences are being compared figure on the left side of the alignment, together with the respective sequences’ GenBank accession numbers. Colour schemes represent the following categories of amino acids: blue – hydrophobic, cyan – aromatic, green – polar, magenta – negative charge, orange – glycines, pink – cysteines, red – positive charge, yellow – prolines, white – unconserved.