Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2yvvA 4evxA 4kp3C 2yvvA 100 22 0 4evxA 14 100 0 4kp3C 0 0 100 FOLD SIMILARITY (Z-SCORE) 2yvvA 4evxA 4kp3C 2yvvA 22.4 0 0 4evxA 0 20.9 0 4kp3C 0 0 13.6