Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 3rh2A 4qgpA 4qgpB 4rvcA 3rh2A 100 37 34 46 4qgpA 32 100 99 61 4qgpB 30 99 100 68 4rvcA 40 0 0 100 FOLD SIMILARITY (Z-SCORE) 3rh2A 4qgpA 4qgpB 4rvcA 3rh2A 35.5 1.8 2.3 0.7 4qgpA 0 17.7 16.1 0 4qgpB 1.9 16.1 18.2 0 4rvcA 0 0 0 43.4