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Sequence alignment of PvTRAg40 and the previously reported PvTRAg protein, using the ClustalW program (available online at http://www.ebi.ac.uk). The two sequences share 23 positionally conserved tryptophan residues, which are shown in bold and shaded in gray. Asterisks indicate identical amino acids, gaps are indicated by dashes, and double and single dots indicate conserved and semiconserved substitutions, respectively. Numbers on the right indicate amino acid positions.
