Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 2zgyA 4pl0A 4pl0B 2zgyA 100 71 100 4pl0A 70 100 98 4pl0B 63 98 100 FOLD SIMILARITY (Z-SCORE) 2zgyA 4pl0A 4pl0B 2zgyA 54.5 0 1.5 4pl0A 0 46.2 43.5 4pl0B 0 43.5 46.3