Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 2i10A 2i10B 3dfuA 2i10A 100 99 100 2i10B 99 100 100 3dfuA 100 64 100 FOLD SIMILARITY (Z-SCORE) 2i10A 2i10B 3dfuA 2i10A 31.3 24.3 1.6 2i10B 24.3 33.4 1.5 3dfuA 1.8 0 32.8