Table 2. Nucleotide frequencies in single- and double-stranded regions of HIV-1 subtype B RNA genomes.
| 448 HIV-1 isolates | A | U | C | G | |
|---|---|---|---|---|---|
|
All |
AVG |
36.20 |
22.23 |
17.64 |
23.94 |
| StD |
0.55 |
0.17 |
0.31 |
0.33 |
|
|
ss |
AVG |
47.50 |
21.30 |
11.90 |
19.20 |
| StD |
0.40 |
0.21 |
0.26 |
0.30 |
|
| ds | AVG |
19.90 |
23.60 |
25.80 |
30.70 |
| StD | 0.44 | 0.23 | 0.29 | 0.30 | |
The alignment of 448 sequences (All) was divided in two parts by the ss or ds designation of bases in the NL4-3 RNA structure. The individual nucleotide compositions were used for the calculation of average and standard deviation.