Fig. 3. Multiple sequence alignment of TRA proteins. Ceratitis capitata (Cc), D. melanogaster (Dm), D. erecta (De), D. simulans (Ds), D. virilis (Dv) and D. hydei (Dh). Asterisks indicate amino acid identity in all species. Intron/exon boundaries are indicated by vertical arrows. Amino acid residues occurring in the conserved regions are indicated by capital letters.