Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 2vbkA 4y9vA 2vbkA 100 100 4y9vA 88 100 FOLD SIMILARITY (Z-SCORE) 2vbkA 4y9vA 2vbkA 69.5 6.7 4y9vA 17 66.5