Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 3kl2C 3txyA 3kl2C 100 72 3txyA 72 100 FOLD SIMILARITY (Z-SCORE) 3kl2C 3txyA 3kl2C 41.6 25.6 3txyA 25.6 39.8