Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1qexB 2f01A 2f01B 3pfgA 1qexB 100 25 58 80 2f01A 21 100 98 58 2f01B 11 98 100 51 3pfgA 100 65 65 100 FOLD SIMILARITY (Z-SCORE) 1qexB 2f01A 2f01B 3pfgA 1qexB 32.2 1.9 2.5 0 2f01A 0 26 23.4 0 2f01B 1.2 23.4 25.7 0 3pfgA 1.6 4.7 4.7 45.4