Table 6.
The polymorphisms in Interhelical Domain II of Vpr (residues 51 – 54)
| Residue | Residues in NL4-3 Vpr | Variant residue(s) noted in viruses of different clades | Number of variants |
| 51 | G | E, K, R | 3 |
| 52 | D | A, G, I, N | 4 |
| 53 | T | A, L, N, P, S | 5 |
| 54 | W | G, R | 2 |
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