Phylogenetic relationships and gene structures of the <i>GmPG</i> genes.

<p>(A) Multiple alignments of 112 full-length amino acids of PG genes from soybean were executed by Clustal X ver. 1.83, and the phylogenetic tree was constructed using MEGA 5.0 by the maximum-likelihood (ML) method with 1,000 bootstrap replicates. Three distinct clusters (I to III) formed by the PGs are marked by red, green, and blue frames, respectively. (B) The main domains are highlighted by colored boxes. Introns are shown as lines. The sequence of the domains are shown in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0163012#pone.0163012.s001" target="_blank">S1 Fig</a>. (C) Exons and introns are represented by yellow boxes and gray lines, respectively. The sizes of exons and introns can be estimated using the scale at the bottom.