Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 2xigA 2xigB 6d57A 6d57B 2xigA 100 99 57 52 2xigB 99 100 60 54 6d57A 58 60 100 96 6d57B 51 54 96 100 FOLD SIMILARITY (Z-SCORE) 2xigA 2xigB 6d57A 6d57B 2xigA 25.8 21.1 12.2 11.3 2xigB 21.1 26.4 12.5 11.4 6d57A 12.2 12.5 23.6 18.7 6d57B 11.3 11.4 18.7 23.8