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Table 2 HIV-1 R5 and X4 Tat amino acid usage

From: Utilization of HIV-1 envelope V3 to identify X4- and R5-specific Tat and LTR sequence signatures

Position AA R5 count R5 % X4 count X4 %
7 K 95 0.19 0 0.00
  N 12 0.02 2 0.06
  S 115 0.23 2 0.06
  R 281 0.56 27 0.87
23 N 230 0.46 5 0.16
  T 274 0.54 26 0.84
57 A 5 0.01 3 0.10
  R 400 0.79 28 0.90
  T 89 0.18 0 0.00
60 E 87 0.17 1 0.03
  D 7 0.01 2 0.06
  K 30 0.06 0 0.00
  Q 242 0.48 22 0.71
  P 35 0.07 5 0.16
  R 86 0.17 0 0.00
  1. The raw counts and relative abundance value of amino acids present in statistically divergent Tat positions for both the R5 and X4 sequence groups (7, 23, 57 and 60)