Fig. 2.

Alignment of the selective PSY protein sequences from different algae produced with the BioEdit program by using Clustal W. The putative transit peptides were removed for this analysis. The alignment indicates selective sequences of PSY class I and class II, aspartate rich and regions/substrate-Mg²⁺-binding sites (DXXXD), residues of the substrate binding pocket (open circle), catalytic residues (dark filled circle), and active site lid residues (straight line)