Figure 1.

Multiple sequence alignment analysis of the peptides of polygalacturonases (PGs) containing the four typical conserved domains in S. lycopersicum. (A) Alignment of the tomato PG peptides containing the four typical conserved domains. The height of the bars indicates the number of identical residues per position. The underlines illustrate the four typical conserved domains of PGs; (B) Multiple alignments of the peptides of tomato PGs containing four conserved domains. Black and light gray shading, respectively, indicate identical and conserved amino acid residues. Conserved domains are also underlined and correspond to part A.