Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 3zrdA 3zrdB 4ak9A 4ak9B 3zrdA 100 95 75 74 3zrdB 95 100 61 36 4ak9A 67 54 100 99 4ak9B 53 56 99 100 FOLD SIMILARITY (Z-SCORE) 3zrdA 3zrdB 4ak9A 4ak9B 3zrdA 36.9 33.1 0 0 3zrdB 33.1 36.9 0 0 4ak9A 0 0 53 49.6 4ak9B 0 0 49.6 51.5