Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2o4tA 4p1bA 2o4tA 100 23 4p1bA 0 100 FOLD SIMILARITY (Z-SCORE) 2o4tA 4p1bA 2o4tA 19.2 0 4p1bA 0 66.1