Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 4modA 5wwlM 5wwlN 4modA 100 0 0 5wwlM 14 100 55 5wwlN 0 64 100 FOLD SIMILARITY (Z-SCORE) 4modA 5wwlM 5wwlN 4modA 12.7 2.7 3.6 5wwlM 3.9 18.4 4.6 5wwlN 2.4 5 14.9