Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 3ivsA 5ktlA 5nxfA 3ivsA 100 78 68 5ktlA 78 100 78 5nxfA 51 57 100 FOLD SIMILARITY (Z-SCORE) 3ivsA 5ktlA 5nxfA 3ivsA 61.6 15.2 0 5ktlA 15.2 56.6 0 5nxfA 0 0 30.9