Sustained G→A hypermutation during reverse transcription of an entire human immunodeficiency virus type 1 strain Vau group O genome

Two full-length human immunodeficiency virus type 1 O sequences are described, one of which was hypermutated in all regions of the genome. This indicates that the intracellular [dTTP]/[dCTP] bias conducive to G --> A hypermutation may be sustained throughout the synthesis of minus-strand DNA. In turn, this suggests the possibility of mutation of host sequences.