Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 4i99A 4w9mC 5da9A 4i99A 100 83 85 4w9mC 83 100 94 5da9A 96 100 100 FOLD SIMILARITY (Z-SCORE) 4i99A 4w9mC 5da9A 4i99A 55.3 27 26.5 4w9mC 27 55.8 12.1 5da9A 8.5 6.6 57.3