Figure 2.

Sequence comparisons of recently duplicated R2R3 Myb genes. A, Amino acid sequence alignment in the MYB domain. Comparison of amino acid sequences of the predicted proteins encoded by ZmMyb-IF25, ZmMyb-IF35, OsMyb-IF, OsMyb-P, P1, C1, and Pl1. Dark-shaded boxes indicate identical amino acids and lighter shaded boxes indicate similar amino acids. The positions of the three helices forming the R2 and R3 MYB repeats are shown with the clear boxes and the MYB domain interrupted by two introns are indicated with arrows. The change from Pro to Ala that defines the Myb^PtoA clade is marked with a star. B, Amino acid sequence alignment for the C termini. Comparison of the predicted C-terminal regions encoded by Myb^PtoA clade members ZmMyb-IF25, ZmMyb-IF35, OsMyb-IF, OsMyb-P, and P1. Dashes indicate gaps introduced to reflect insertions and deletions during evolution.