Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1uddA 1uddB 2i6eB 4cbbG 1uddA 100 99 57 62 1uddB 99 100 64 58 2i6eB 0 0 100 40 4cbbG 60 62 39 100 FOLD SIMILARITY (Z-SCORE) 1uddA 1uddB 2i6eB 4cbbG 1uddA 41.1 39 0 0.2 1uddB 39 41 0 0.2 2i6eB 0 0 48.8 0 4cbbG 0.2 0.2 0 72.6