Additional file 3: of Characterization and expression profiling of ATP-binding cassette transporter genes in the diamondback moth, Plutella xylostella (L.)

Phylogenetic tree and gene structure of ABCs in P. xylostella. The left side of the figure presents the phylogenetic relationship among ABC transporters in P. xylostella and the right, the corresponding gene structures. The green bars represent exons, and black lines represent introns. The digits (0, 1 and 2) on each of the black lines represent three different phases of the introns existed in eukaryotic genes. The length of genes is measured with a scale on the bottom right. Protein sequences used for phylogenetic analysis are provided in the Additional file 1. (FA 30Â kb)