Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2nlaA 2nlaB 3mk8A 3mk8B 4zihA 4zihB 2nlaA 100 0 91 0 50 0 2nlaB 0 0 0 0 0 0 3mk8A 0 0 0 0 0 0 3mk8B 0 0 0 0 0 0 4zihA 0 0 0 0 0 0 4zihB 0 0 0 0 0 0 FOLD SIMILARITY (Z-SCORE) 2nlaA 2nlaB 3mk8A 3mk8B 4zihA 4zihB 2nlaA 33 0 25.9 0 8.5 0 2nlaB 0 0 0 0 0 0 3mk8A 0 0 0 0 0 0 3mk8B 0 0 0 0 0 0 4zihA 0 0 0 0 0 0 4zihB 0 0 0 0 0 0