Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 3r89A 4mjzA 5xavA 3r89A 100 80 75 4mjzA 80 100 76 5xavA 74 74 100 FOLD SIMILARITY (Z-SCORE) 3r89A 4mjzA 5xavA 3r89A 53.4 30.8 0.6 4mjzA 30.9 55.5 1 5xavA 0.5 0.8 72.6