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Sequence alignment of the ChBDs of ArChiA (ChBDA1 and ChBDA2) and ArChiB (ChBDB) and of Alteromonas sp. strain O-7 chitinase A (ChBDaltso). The alignment was constructed using the multiple alignment program (PILEUP) from the Greek EMBnet Node. Amino acid numbering is indicated on the right. The amino acids under the sequence alignment are the consensus sequence determined from the alignment of putative bacterial ChBDs as described in the text. @, aromatic residue.
