Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 3bgtA 3c8wA 3bgtA 100 85 3c8wA 88 100 FOLD SIMILARITY (Z-SCORE) 3bgtA 3c8wA 3bgtA 43.8 37.4 3c8wA 37.4 43.6