Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 1x0vA 5u5nA 5ua0A 1x0vA 100 63 66 5u5nA 61 100 83 5ua0A 66 83 100 FOLD SIMILARITY (Z-SCORE) 1x0vA 5u5nA 5ua0A 1x0vA 65 5.3 4.6 5u5nA 5.4 45.6 32.1 5ua0A 4.8 32.1 44.5