Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 4ktbA 4ktbD 6g94B 6g94R 4ktbA 100 99 0 54 4ktbD 99 100 0 77 6g94B 0 0 100 0 6g94R 54 75 0 100 FOLD SIMILARITY (Z-SCORE) 4ktbA 4ktbD 6g94B 6g94R 4ktbA 34.2 31.2 0 0 4ktbD 31.2 34 0 0 6g94B 0 0 26.4 0 6g94R 0 0 0 47.2