Table 3. Lineage-specific amino acid substitutions within the human metapneumovirus (HMPV) sub-lineages of A2 in the attachment (G) protein open reading frame between position 14 and 228a.
A2 sub-lineage | Amino acid position in the G gene |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
40 | 59 | 93 | 106 | 148 | 164 | 188 | 197 | 199 | 216 | 227 | |
A2a | T | T | H | P | V | P | T | T | T | T | P |
A2b | T | T | H | P | V | P | T | T | V | T | P |
Novel sub-lineage of A2 | A | A | L | S | A | S | A | I | A | A | T |
aThe position of amino acid was determined according to HMPV reference genotype A2, AY304360 HMPV NL/17/00/A2a.