Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 3gzbA 3gzbB 3lzaA 5o5sA 3gzbA 100 88 74 48 3gzbB 88 100 83 42 3lzaA 74 83 100 44 5o5sA 44 39 0 100 FOLD SIMILARITY (Z-SCORE) 3gzbA 3gzbB 3lzaA 5o5sA 3gzbA 30.1 24.3 24.3 0 3gzbB 24.3 28.9 25.8 0 3lzaA 24.3 25.8 28.6 0 5o5sA 0 0 0 27.7