Figure 1.

Alignment of the deduced amino acid sequences of F. pringlei β-CAs with those of F. bidentis and pea. Identical amino acids and conservative changes are shaded. Dashes represent gaps inserted to maximize the alignment. Amino acids in the proposed active site and those acting as zinc ligands, based on the pea β-CA sequence (Kimber and Pai, 2000), are marked with asterisks and dots, respectively. The arrow denotes the predicted cleavage site in plastidial C₃ dicot β-CAs (Burnell et al., 1990; Roeske and Ogren, 1990). GenBank accession numbers are as follows: pea, M63627; F. bidentis CA1, U08398; F. bidentis CA2, AY167112; F. bidentis CA3, AY167113.