Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 3wnwA 4h2hA 4h2hE 3wnwA 100 0 0 4h2hA 0 100 96 4h2hE 0 96 100 FOLD SIMILARITY (Z-SCORE) 3wnwA 4h2hA 4h2hE 3wnwA 31.8 0 0 4h2hA 0 71.1 64 4h2hE 0 64 66.8