Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 1rm6A 3hrdA 4zohA 1rm6A 100 90 93 3hrdA 90 100 87 4zohA 93 91 100 FOLD SIMILARITY (Z-SCORE) 1rm6A 3hrdA 4zohA 1rm6A 77.2 30.3 40.7 3hrdA 30.3 61.6 29 4zohA 40.7 29 66.8