Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1v3wA 3otmA 4o1kA 1v3wA 100 74 26 3otmA 74 100 63 4o1kA 52 49 100 FOLD SIMILARITY (Z-SCORE) 1v3wA 3otmA 4o1kA 1v3wA 38 26.1 0 3otmA 26.1 41.7 0 4o1kA 0 0 35.6