Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1zlaA 1zlaB 3kkfA 4uuzA 4uuzB 4yvqA 1zlaA 100 18 0 74 15 12 1zlaB 15 100 0 22 99 0 3kkfA 0 0 100 0 0 2 4uuzA 74 22 0 100 22 4 4uuzB 15 99 0 22 100 9 4yvqA 0 5 2 0 2 100 FOLD SIMILARITY (Z-SCORE) 1zlaA 1zlaB 3kkfA 4uuzA 4uuzB 4yvqA 1zlaA 16.4 7.6 0 11.8 7.6 2.2 1zlaB 8.1 15 0 8.2 12.5 0 3kkfA 0 0 23.1 0 0 3.2 4uuzA 11.8 8.2 0 14.4 8.2 2.2 4uuzB 8 12.5 0 8.2 14.8 2 4yvqA 0 2 3.2 1.8 2.9 16.4