Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 3gzhA 4efcA 4mx2A 3gzhA 100 91 90 4efcA 91 100 94 4mx2A 90 94 100 FOLD SIMILARITY (Z-SCORE) 3gzhA 4efcA 4mx2A 3gzhA 60.5 49 45 4efcA 49 58.7 51.7 4mx2A 45 51.7 56.9