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Multiple alignment of the deduced amino acid sequences of four arrowhead α-expansins. The deduced amino acid sequences were aligned by using the Clustal-W program. Positions of highly conserved Cys (C) residues, HFD and a Try (W) residue are indicated by filled circles, a black bar and open circles, respectively, above each amino acid residue. Common amino acid residues of the four α-expansins are enclosed in boxes.
