Control Elements Secondary Structures of HIV-1 genome

PBS region. U5 hairpins

The examples of U5 hairpins frequently formed in HIV-1 isolates of B subtype (a), C subtype (b, c), D subtype (d), and F1 subtype (e) (see Publications [6]). The additional binding sites for tRNALys3 are indicated by line. Base changes as compared to RefSec are squared.