Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 5mu9A 5muaA 5muaB 5mu9A 100 100 100 5muaA 82 100 98 5muaB 84 98 100 FOLD SIMILARITY (Z-SCORE) 5mu9A 5muaA 5muaB 5mu9A 49.3 25.4 25.4 5muaA 34.7 45.1 42.7 5muaB 34.6 42.7 45.7