Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 3fgeA 4rckA 4x2hA 4x2hB 3fgeA 100 24 35 41 4rckA 24 100 32 30 4x2hA 41 30 100 63 4x2hB 0 0 61 100 FOLD SIMILARITY (Z-SCORE) 3fgeA 4rckA 4x2hA 4x2hB 3fgeA 35.6 0 0 0 4rckA 0 25.6 0 0 4x2hA 0 0 34.6 3.7 4x2hB 0 0 10.5 33