Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 3m3iA 3zrxA 3zrxB 5b1nA 3m3iA 100 0 0 0 3zrxA 0 100 99 0 3zrxB 0 99 100 0 5b1nA 0 29 29 100 FOLD SIMILARITY (Z-SCORE) 3m3iA 3zrxA 3zrxB 5b1nA 3m3iA 35.6 0 0 0 3zrxA 0 16.3 12.1 0 3zrxB 0 12.1 15.5 0 5b1nA 0 9.7 8.4 12