Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1fr3A 3ml1A 3ml1B 4fm4A 4fm4B 4krwA 1fr3A 100 0 0 0 0 0 3ml1A 10 100 0 78 15 0 3ml1B 0 47 100 41 26 4 4fm4A 0 44 0 100 34 0 4fm4B 0 0 0 33 100 0 4krwA 0 0 0 0 0 100 FOLD SIMILARITY (Z-SCORE) 1fr3A 3ml1A 3ml1B 4fm4A 4fm4B 4krwA 1fr3A 15 0 0 0 0 0 3ml1A 0 74.5 0 0 0 0 3ml1B 0 0 16.5 0 0 0 4fm4A 0 0 0 34.7 0 0 4fm4B 0 0 0 0 33.5 0 4krwA 0 0 0 0 0 14.8