Fig. 5. Comparison of the extrapolated amino acid sequences of A-CA with six putative dipteran carbonic anhydrase genes identified in the Drosophila melanogaster gene data bases. (A) An alignment of A-CA with the amino acid sequences of the six Drosophila melanogaster genes (with accession numbers listed) identified through bioinformatics searching. Regions of exact homology across all species are highlighted in blue (100 %); regions with less homology are highlighted in red (>75 %) and green (>50 %). Similar amino acid residues were included in the shading. (B) A homology tree comparison of these dipteran carbonic anhydrases.