Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 3lszA 5ovyA 5ovyB 3lszA 100 24 20 5ovyA 11 100 98 5ovyB 20 98 100 FOLD SIMILARITY (Z-SCORE) 3lszA 5ovyA 5ovyB 3lszA 39.3 0 0 5ovyA 0 36 33 5ovyB 0 33 36.1