Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 2axuA 2bmaA 3hulA 2axuA 100 58 56 2bmaA 59 100 100 3hulA 55 45 100 FOLD SIMILARITY (Z-SCORE) 2axuA 2bmaA 3hulA 2axuA 41 0.5 0.1 2bmaA 0.5 69.3 1.1 3hulA 0.1 1.5 49.8