Table 3.
Pyrimidine, and pyrimidine sequences in some selected SARS-CoV-2 variants.
| Pyrimidines in genome | No of pyrimidine doublets | No of purine/pyrimidine/pyrimidine | |||
|---|---|---|---|---|---|
| SARS-CoV-2/human/USA/USA-WA1/2020 | GenBank: MT246667.1 | 15,086 | 7597 | 7676 | |
| Alpha | SARS-CoV-2/human/USA/GA-CDC-4201216-001/2021 | GenBank: 0K045638.1 | 15,071 | 7590 | 7668 |
| Difference to USA-WA1 | 0.10% | 0.09% | 0.10% | ||
| Delta | SARS-CoV-2/human/Colombia/CO-SAN-UW21120626151/2021 | GenBank: 0N150700. 1 | 15,014 | 7554 | 7601 |
| Difference to USA-WA1 | 0.48% | 0.57% | 0.98% | ||
| Difference to Alpha | 0.38% | 0.47% | 0.87% | ||
| XBB.1.16 | SARS-CoV-2/human/THA/MTM_01_682/2023 | GenBank: 0Q946922.1 | 14,950 | 7519 | 7612 |
| Difference to USA-WA1 | 0.90% | 1.03% | 0.83% | ||
| Difference to Alpha | 0.80% | 0.94% | 0.73% |