Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 3c2qA 5l8rA 5l8rK 3c2qA 100 86 0 5l8rA 100 100 0 5l8rK 19 13 100 FOLD SIMILARITY (Z-SCORE) 3c2qA 5l8rA 5l8rK 3c2qA 53.6 0 0 5l8rA 0 52.3 0.7 5l8rK 0 1 16.3