Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1ryaA 3w36A 4hgnA 1ryaA 100 16 61 3w36A 0 100 56 4hgnA 65 59 100 FOLD SIMILARITY (Z-SCORE) 1ryaA 3w36A 4hgnA 1ryaA 33.3 0 0 3w36A 0 68.1 0 4hgnA 0 0 37.3