Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 4k7cA 4tlhA 5macA 4k7cA 100 74 52 4tlhA 100 100 49 5macA 76 49 100 FOLD SIMILARITY (Z-SCORE) 4k7cA 4tlhA 5macA 4k7cA 69.6 0 0 4tlhA 0.3 41.6 1.1 5macA 0 1.1 66.7