Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 2i2xA 4ewtA 5ndyA 2i2xA 100 71 73 4ewtA 68 100 40 5ndyA 73 47 100 FOLD SIMILARITY (Z-SCORE) 2i2xA 4ewtA 5ndyA 2i2xA 76 0 9.6 4ewtA 0 66.4 0 5ndyA 8.4 0 49