Instead of NF kappa B , the activator protein 3 binds to the divergent site in HIV-2 .
instead of nf kappa b , the activator protein 3 binds to the divergent site in hiv-2 .
O O B-protein_molecule I-protein_molecule I-protein_molecule O O B-protein_molecule I-protein_molecule I-protein_molecule O O O O O O B-virus O