Fig. 3. Frequency of HIV-1 protease (positions 10–99) (a) and reverse transcriptase (positions 40–240) (b) according to subtype in previously untreated person.

Alanine , cysteine , aspartate , glutamate , phenylalanine , glycine , histidine , isoleucine , lysine , leucine , methionine , asparganine , proline , glutamine , arginine , serine , threonine , valine , tryptophan , tyrosine , insertion , deletion.