Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 2qrvA 2qrvD 5yx2A 2qrvA 100 99 100 2qrvD 99 100 99 5yx2A 100 99 100 FOLD SIMILARITY (Z-SCORE) 2qrvA 2qrvD 5yx2A 2qrvA 48.1 45.4 42.4 2qrvD 45.4 47.9 42.3 5yx2A 42.4 42.3 51.1