Fig. 7.

SeqLOGO for the EXPB family. In each pair, the top lines are rice/arabidopsis sequences and the lower lines are Physcomitrella. The height of the letters indicates frequency of the amino acid in that group of sequences. Boxed residues represent those that are normally conserved in all four expansin families. Black arrows indicate changes in the Physcomitrella EXPB family to normally conserved residues in EXPB genes. Codes indicate the region of the protein in which the change resides. LBS = long binding surface; HC = hydrophobic core; BDC = between domain contacts; SBP = short binding pocket (Yennawar et al., 2006).