Fig. 3

Phylogenetic analysis and motif composition of ZmSMR proteins. The phylogenetic tree was constructed using MEGA6 software by the Neighbor-joining method with 1000 bootstrap iterations based on the 12 full-length amino acids of ZmSMR, and the proteins were clustered into four subgroups (A, B, C, D) marked with different background to facilitate subfamily identification. Schematic representation of the conserved motifs in the ZmSMR proteins was analyzed by MEME. Each motif is represented by a colored box numbered at the bottom, and the consensus sequences of each motif are also shown. The details of sequence logo of the motifs are given in Additional file 6