Figure 4.

Comparisons of MEM1 and MEM1-Like Sequences.

(A) MEM1 sequences of the ppcA promoters from C₄, C₄-like, C₃-C₄ intermediate, and C₃ Flaveria species. Ft, F. trinervia; Fb, F. bidentis; Fpa, F. palmerii; Fv, F. vaginata; Fbr, F. brownii; Fpu, F. pubescens; Fc, F. cronquistii; Fp, F. pringlei.

(B) Comparison of MEM1 sequences from the ppcA promoters of F. trinervia (Ft) and F. pringlei (Fp) with their MEM1-like counterparts from the ppcB genes. The MEM1 A and B submodules are highlighted by boxes. Asterisks label identical nucleotides in the A or B submodule of all promoters. Gray bars indicate the single nucleotide difference in the A submodule and the insertion/deletion of the CACT tetranucleotide in the B submodule. For a comparison of the whole promoters, see Supplemental Figure 1 online.