Table 4.
Deep-sequencing identification of variations of the first nucleotides of the NCRs from different segments from 1918 and 2009 pandemic influenza viruses.
| Segment | 1918 pandemic
|
2009 pandemic
|
||
|---|---|---|---|---|
| The 1st nucleotide | Number of identified reads | The 1st nucleotide | Number of identified reads | |
| PB2 | Agcgaaa… | 26 | Agcgaaa… | 5 |
| Cgcgaaa… | 65 | |||
| Tgcgaaa… | 10 | |||
| PB1 | Agcgaaa… | 57 | Agcgaaa… | 384 |
| PA | Agcgaaa… | 106 | Agcaaa… | 93 |
| Tgcgaaa… | 7 | |||
| HA | Cgcaaaa… | 29 | ||
| NP | Cgcaaaa… | 11 | Agcaaaa… | 644 |
| Cgcaaaa… | 17 | |||
| NA | ???????… | Agcaaaa… | 1 | |
| MP | Agcaaaa… | 47 | Agcaaaa… | 92 |
| Cgcaaaa… | 3 | |||
| NS | Agcaaaa… | 36 | ?gcaaaa… | |
The upper case letters are the 1st bases of 5′ UTRs from recovered cDNA sequences. ? indicates that sequences recovered did not reach the 5′ end.