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. 2007 Apr 16;51(7):2285–2292. doi: 10.1128/AAC.01499-06

FIG. 1.

FIG. 1.

Alignment of rt reference sequences for genotypes A to G. Highly conserved sequence motifs A to G are shaded. L80, D83, and M204 in the dNTP-binding tetrad are emphasized in boldface type. Three amino acid residues that occur rarely or not at all in genotypes other than genotype A and that never occur in conjunction with rtL80V/I are identified by white type on a black background. Reference sequences (276 N-terminal residues) are from Stuyver et al. (27), and the conserved sequence motifs were identified as described by Bartholomeusz et al. (4).