
Conservation of PTL structure in spumaretroviruses. Structure of retroviral HIV-1 TAR and HBV ɛ hairpins is shown for comparison. Human foamy virus (GenBank accession number M54978), simian foamy virus (JQ867462), macaque simian foamy virus (JN801175), spider monkey foamy virus (EU010385), common marmoset foamy virus (GU356395), squirrel monkey foamy virus (GU356394), equine foamy virus (AF201902), feline foamy virus (KC292055), bovine foamy virus (JX307862).










