Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1a4iA 3milA 3mvuA 4dqnA 1a4iA 100 51 38 82 3milA 70 100 59 50 3mvuA 49 49 100 0 4dqnA 78 50 0 100 FOLD SIMILARITY (Z-SCORE) 1a4iA 3milA 3mvuA 4dqnA 1a4iA 50.9 2.5 0 0.5 3milA 2.9 42.7 0 0 3mvuA 0 0 43.7 0 4dqnA 0 0 0 59.8