Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 2x36A 2x36B 4uhvB 2x36A 100 97 49 2x36B 97 100 35 4uhvB 80 42 100 FOLD SIMILARITY (Z-SCORE) 2x36A 2x36B 4uhvB 2x36A 40.6 34.1 0 2x36B 34.1 39.4 0 4uhvB 0 0 56