Fig. (8) Amino acid sequence alignment of the PMTV TGBp1 region involved in the protein association with MTs and corresponding TGBp1 sequences of three other pomoviruses. Similar and identical amino acid residues are boxed and grey shaded. Numbers of amino acid residues upstream and downstream of the aligned regions are shown in parentheses. Abbreviations of virus names are as follows: PMTV, Potato mop-top virus (accession number NC_003725); BSBV, Beet soil-borne virus (NC_003519); BVQ, Beet virus Q (NC_003512); BBNV, Broad bean necrosis virus (NC_004425).