Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1lu9A 3qp1A 3witA 1lu9A 100 63 5 3qp1A 58 100 0 3witA 0 0 100 FOLD SIMILARITY (Z-SCORE) 1lu9A 3qp1A 3witA 1lu9A 53.2 0 0 3qp1A 0 36.6 0 3witA 0 0 13.1