Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 3dk9A 5vdnA 6fmuA 3dk9A 100 94 85 5vdnA 94 100 85 6fmuA 85 85 100 FOLD SIMILARITY (Z-SCORE) 3dk9A 5vdnA 6fmuA 3dk9A 61.9 52.4 45.5 5vdnA 52.4 62.8 45.6 6fmuA 45.5 45.6 62.1