Sequence alignment of putative midgut carboxypeptidases. (A) Comparison of mature Carboxypeptidase A proteins of Aedes aegypti (A. aegypti), Anopheles gambiae (A. gambiae), Phlebotomus perniciosus (Pper), Phlebotomus papatasi (Pp) and Lutzomyia longipalpis (Lulo). N-terminal portion of the peptides are not shown due to PperCpepA 5' mRNA truncation. Conserved cysteines are indicated (C), metal binding residues are marked by (*) and catalytic residues are marked by (#). (B) Comparison of mature Carboxypeptidase B proteins of P. perniciosus (Pper), P. papatasi (Pp) and L. longipalpis (Lulo). Conserved cysteines are indicated (C), metal binding residues are marked by (*), catalytic residues are marked by (#) and a conserved aspartate in the binding pocket of carboxypeptidases B is indicated (D). Accession numbers: PperCpepA [GenBank:EZ966131], A. aegypti [GenBank:AAT36730], A. gambiae [GenBank:AAB96576], LuloCpepA1 [GenBank:ABV60310], LuloCpepA2 [GenBank:ABV60311], PpCpepA [GenBank:ABV44738], PperCpepB [GenBank:EZ966132], PpCpepB [GenBank:ABV44754], LuloCpepB [GenBank:ABV60312].