Figure 1. Phylogenetic analysis of chitinase and chitinase-like proteins from three insect species based on catalytic domain sequences.

Ag: An. gambiae; Aa: Aedes aegypti; Tc: T. castaneum; Dm: D. melanogaster. Phylogenetic tree of insect chitinases generated by the MEGA 4 software after alignment using ClustalW (www.ebi.ac.uk/clustalW). Bootstrap values were obtained by neighbor-joining method using 5000 replications. Protein accession numbers are shown in Table 2 and Table S3.