Figure 2From: Natural variation of HIV-1 group M integrase: Implications for a new class of antiretroviral inhibitorsLevel of Shannon's entropy across the 99 amino acids of protease, 560 amino acids of RT, and 288 amino acids of integrase for 727 isolates from the six subtypes for which the most isolates were available. A dotted line is drawn at an entropy level of 0.5 bits – a level at which the correct amino acid at a position could be predicted with nearly 90% certain.Back to article page