Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 3dbaA 3dbaB 3l0xA 3l0xB 3dbaA 100 94 47 18 3dbaB 97 100 48 13 3l0xA 11 53 100 37 3l0xB 24 11 37 100 FOLD SIMILARITY (Z-SCORE) 3dbaA 3dbaB 3l0xA 3l0xB 3dbaA 35.9 28.6 0 0 3dbaB 28.6 35.4 0 0 3l0xA 0 0 28 7.9 3l0xB 0 0 7.9 18.2