Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 3h5iA 3l4fA 3l4fC 3h5iA 100 0 0 3l4fA 0 100 0 3l4fC 0 10 100 FOLD SIMILARITY (Z-SCORE) 3h5iA 3l4fA 3l4fC 3h5iA 29.7 0 0 3l4fA 0 7.3 4.3 3l4fC 0 4.2 7