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Alignment of pectate lyase family 4 catalytic domains of C. cellulovorans (C.c) PelA, Bacillus species (B.s) PelH, and E. chrysanthemi (E.c) PelL and PelX. Amino acids that are conserved in the four sequences are boxed. −, gaps left to improve alignment. Numbers refer to amino acid residues at the start of the respective lines; all sequences are numbered from Met-1 of the peptide.
