Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1ja9A 2yvaA 2zvbA 5azpA 1ja9A 100 67 66 42 2yvaA 74 100 13 30 2zvbA 72 37 100 38 5azpA 43 30 43 100 FOLD SIMILARITY (Z-SCORE) 1ja9A 2yvaA 2zvbA 5azpA 1ja9A 49.9 2.5 0.2 0 2yvaA 5.1 38.6 0.4 0 2zvbA 1.1 1.7 44.7 0 5azpA 0 0 0 52.6