Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 1xe3A 4r2xA 1xe3A 100 78 4r2xA 78 100 FOLD SIMILARITY (Z-SCORE) 1xe3A 4r2xA 1xe3A 46.1 28.8 4r2xA 28.6 47.7