Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 3dmcA 4gx1A 5fhyA 3dmcA 100 59 0 4gx1A 58 100 83 5fhyA 66 83 100 FOLD SIMILARITY (Z-SCORE) 3dmcA 4gx1A 5fhyA 3dmcA 29.1 0 0 4gx1A 0 49.8 0 5fhyA 0.8 0 32.2