Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2yfvA 2yfvB 3l8rA 3obhA 2yfvA 100 17 2 0 2yfvB 14 100 14 0 3l8rA 0 0 100 0 3obhA 0 0 0 100 FOLD SIMILARITY (Z-SCORE) 2yfvA 2yfvB 3l8rA 3obhA 2yfvA 12.7 7.7 1.8 0 2yfvB 7.6 14.1 1.3 0 3l8rA 0 0 21.4 0 3obhA 0 0 0 15.2