Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 1f6yA 1u08A 1u08B 2ahrA 1f6yA 100 69 69 58 1u08A 68 100 99 57 1u08B 68 99 100 56 2ahrA 78 57 55 100 FOLD SIMILARITY (Z-SCORE) 1f6yA 1u08A 1u08B 2ahrA 1f6yA 48.9 1.6 1.2 2.3 1u08A 1.4 68.8 64.1 4.2 1u08B 1.2 64.1 67.5 3.4 2ahrA 1.1 4.3 3.4 40