Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 1vknA 1xygA 2cvoA 1vknA 100 87 86 1xygA 87 100 94 2cvoA 86 94 100 FOLD SIMILARITY (Z-SCORE) 1vknA 1xygA 2cvoA 1vknA 62.2 49.3 48.7 1xygA 49.3 63.1 57.3 2cvoA 48.7 57.3 63.5