Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 4ls7A 5sxoA 5xtkA 4ls7A 100 93 35 5sxoA 93 100 29 5xtkA 39 30 100 FOLD SIMILARITY (Z-SCORE) 4ls7A 5sxoA 5xtkA 4ls7A 81.7 74.4 0 5sxoA 74.4 82.6 0.2 5xtkA 0 0.3 30.2