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Multiple sequence alignment of putative P. perniciosus chymotrypsins (partial sequences). Conserved cysteines are indicated (C), catalytic H/D/S residues marked by (*) and a serine residue implicated in chymotrypsin substrate specificity marked by (#). Accession numbers: PperChym1 [GenBank:EZ933296], PperChym2 [GenBank:EZ933297], PperChym3 [GenBank:EZ933298], PperChym4 [GenBank:EZ933299], PperChym5 [GenBank:EZ933300].
