Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 4ia6A 4ia6B 5w15A 4ia6A 100 99 75 4ia6B 99 100 48 5w15A 53 48 100 FOLD SIMILARITY (Z-SCORE) 4ia6A 4ia6B 5w15A 4ia6A 69.1 64.4 2.1 4ia6B 64.4 67.3 0 5w15A 0 0 53.2