Additional file 4 of Transcriptomic analysis of the testicular fusion in Spodoptera litura

Additional file 4. Phylogenetic tree of the insect MMP proteins. Full-length protein sequences were obtained from the S. litura genome. Other MMPs protein sequences were downloaded from NCBI. All of MMPs protein sequences were aligned with ClustalW by the neighbor-joining method and the tree was built by using MEGA6. The S. litura MMPs are labeled with diamonds.