Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1zlaA 1zlaB 2dbbA 2dbbB 3mvdA 3mvdB 5a4oA 1zlaA 100 18 0 0 99 19 0 1zlaB 15 100 0 23 13 95 0 2dbbA 0 0 100 99 0 0 0 2dbbB 0 0 99 100 0 0 0 3mvdA 99 11 0 0 100 18 0 3mvdB 26 95 17 23 22 100 0 5a4oA 0 0 0 0 0 0 100 FOLD SIMILARITY (Z-SCORE) 1zlaA 1zlaB 2dbbA 2dbbB 3mvdA 3mvdB 5a4oA 1zlaA 16.4 7.6 0 0 14.8 8.1 0 1zlaB 8.1 15 0 0 8.2 13.1 0 2dbbA 0 0 23.4 21.1 0 0 0 2dbbB 0 0 21.1 23.7 0 0 0 3mvdA 14.8 7.8 0 0 16.1 8.2 0 3mvdB 4.8 13.1 0 0 5 15.2 0 5a4oA 0 0 0.7 0.9 0 0 16