Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2fyzA 4usxA 5omiA 5xeaA 2fyzA 100 0 7 0 4usxA 0 100 0 70 5omiA 5 5 100 0 5xeaA 0 70 0 100 FOLD SIMILARITY (Z-SCORE) 2fyzA 4usxA 5omiA 5xeaA 2fyzA 7.3 0 3.7 1.8 4usxA 0 21.1 0 0 5omiA 3.8 0 14.2 0 5xeaA 1.7 1.4 1.4 41.9