Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2rekA 2rekB 5c8aA 5c8aB 2rekA 100 99 66 32 2rekB 99 100 17 62 5c8aA 21 19 100 99 5c8aB 14 26 99 100 FOLD SIMILARITY (Z-SCORE) 2rekA 2rekB 5c8aA 5c8aB 2rekA 33 27.9 0.4 2.4 2rekB 27.9 33.2 1.6 0.3 5c8aA 2.5 2.9 36.8 33.8 5c8aB 2.5 0.6 33.8 36.8