Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 1dnlA 1eluA 4usqA 1dnlA 100 100 72 1eluA 78 100 80 4usqA 48 81 100 FOLD SIMILARITY (Z-SCORE) 1dnlA 1eluA 4usqA 1dnlA 33.1 0 0 1eluA 0 67.5 0 4usqA 0 0 56.9