Table  Pairwise amino-acid identity across relevant coronaviruses in the sequence fragment of the spike glycoprotein S2 subunit recognised by monoclonal antibody 1A9 or the sequence of the full spike glycoprotein
Query/reference  Pairwise amino-acid identity (%)
SARS-CoV-2  BatRaTG13  SARS-CoV-1  MERS  OC43  HKU1  229E  NL63
Fragment region of spike S2
SARS-Co-V2  100.00  SB  SB  SB  SB  SB  SB  SB
BatRaTG13  99.40  100.00  SB  SB  SB  SB  SB  SB
SARS  93.10  92.50  100.00  SB  SB  SB  SB  SB
MERS  39.00  39.00  39.00  100.00  SB  SB  SB  SB
OC43  39.00  39.00  38.40  51.20  100.00  SB  SB  SB
HKU1  32.70  32.70  30.80  50.60  68.40  100.00  SB  SB
229E  30.80  30.20  32.10  31.50  29.70  30.40  100.00  SB
NL63  30.80  30.20  30.20  32.10  31.60  33.50  64.20  100.00
Full spike protein
SARS-CoV-2  100.00  SB  SB  SB  SB  SB  SB  SB
BatRaTG13  97.70  100.00  SB  SB  SB  SB  SB  SB
SARS-CoV-1  77.80  78.20  100.00  SB  SB  SB  SB  SB
MERS  35.40  35.40  35.20  100.00  SB  SB  SB  SB
OC43  37.30  37.10  36.90  39.50  100.00  SB  SB  SB
HKU1  35.20  35.30  35.00  39.00  67.00  100.00  SB  SB
229E  41.70  41.50  41.80  41.80  43.50  43.50  100.00  SB
NL63  36.30  36.20  36.20  35.40  39.70  37.80  64.70  100.00
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.