However , in vitro mutagenesis of the HTLV-I rex gene has provided indirect evidence which suggests that p21rex , and by analogy HTLV-II p24rex , results from initiation at an internal AUG of the tax /rex mRNA .
however , in vitro mutagenesis of the htlv-i rex gene has provided indirect evidence which suggests that p21rex , and by analogy htlv-ii p24rex , results from initiation at an internal aug of the tax /rex mrna .
O O O O O O O B-virus B-DNA_domain_or_region O O O O O O O O B-protein_molecule O O O O B-virus B-protein_molecule O O O O O O O B-polynucleotide O O B-DNA_domain_or_region B-DNA_domain_or_region O O