Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1xi3A 1yadA 3nl6A 4ld7A 4r8zA 5kd6A 1xi3A 100 70 73 62 57 0 1yadA 70 100 70 67 0 28 3nl6A 73 70 100 100 0 65 4ld7A 51 0 61 100 57 91 4r8zA 55 0 67 65 100 57 5kd6A 0 69 0 91 57 100 FOLD SIMILARITY (Z-SCORE) 1xi3A 1yadA 3nl6A 4ld7A 4r8zA 5kd6A 1xi3A 42.9 25.4 26.9 0 0 0 1yadA 25.4 38.6 20.6 0.1 0 0 3nl6A 26.9 20.6 66 0.4 0 0.6 4ld7A 0 0 0 72.5 0.8 56.4 4r8zA 0 0 0 1.4 41.3 1.5 5kd6A 0 0.4 0 56.4 1.3 74.8