FIGURE 3.
The 1D 1H NMR spectrum, the 2D 1H-1H COSY spectrum, and the 2D 13C-1H HSQC (red peaks)/HMBC (black) spectra of the product formed upon conversion of xylobiose by XylO, recorded in D2O at 25 °C. In the HMBC spectrum, the cross-peak confirming the glycosidic linkage is underlined. The structure of the xylobionate, including the atom annotation, is also presented.