Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1onwA 2ouwA 4flnA 1onwA 100 0 36 2ouwA 90 100 0 4flnA 29 0 100 FOLD SIMILARITY (Z-SCORE) 1onwA 2ouwA 4flnA 1onwA 72 0 0 2ouwA 0 22.6 0 4flnA 0 0 59.4