Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 3hmuA 3qguA 3qguB 4dwdA 3hmuA 100 90 91 83 3qguA 88 100 98 77 3qguB 89 98 100 94 4dwdA 83 76 79 100 FOLD SIMILARITY (Z-SCORE) 3hmuA 3qguA 3qguB 4dwdA 3hmuA 71.2 18 17.9 0 3qguA 18.7 72.4 68.9 1.1 3qguB 17.5 68.9 70.4 1.2 4dwdA 0.7 1 1.1 69.4