Fig 1. Protein alignment of BsExlx1, PcExl1, EXPB1 and ScExlx1.

Darker background indicates high amino acid conservation among the sequences. M1, M2 and M3 indicate the three classic motifs of plant expansins. The boxed amino acids are important residues involved in binding and creep activity in BsExlx1. White square indicates a putative N-glycosylation site in ScExlx1 and white circles indicate the predicted residues to form disulfide bonds.