Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2a3qA 2mltA 2mltB 2a3qA 100 0 0 2mltA 0 0 0 2mltB 0 0 0 FOLD SIMILARITY (Z-SCORE) 2a3qA 2mltA 2mltB 2a3qA 19.5 0 0 2mltA 0 0 0 2mltB 0 0 0