Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2gkwA 4l80A 4l9zA 4rheA 2gkwA 100 43 63 57 4l80A 58 100 84 78 4l9zA 66 84 100 59 4rheA 0 44 58 100 FOLD SIMILARITY (Z-SCORE) 2gkwA 4l80A 4l9zA 4rheA 2gkwA 32.2 0 0 0 4l80A 0 57.2 39.3 0.7 4l9zA 0 39.3 52.5 1.1 4rheA 0 0.7 0.8 40.8