Comparison of Arabidopsis BRI1 (AtBRI1) with its closest homolog from Selaginella.

<p>(A) Multiple sequence alignment between AtBRI1 and the Selaginella sequence Sm99902 was performed using ClustalW. Underlining delimits the domains. Red triangles indicate residues identified as being functionally important by mutation studies <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0081938#pone.0081938-Vert1" target="_blank">[41]</a> and blue triangles are key residues that participate in BL binding <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0081938#pone.0081938-She1" target="_blank">[42]</a>. (B) Schematic representation of the domains identified in AtBRI1. A key for the colors and shapes used is provided below the diagram. Scale bar = 100 bp. (C) Phylogenetic tree of AtBRI1 and closely related sequences from maize, rice, Physcomitrella, and Selaginella. Arrows indicate AtBRI1 and Sm99902. Scale bar = genetic distance of 200.