FIG. 4.

Anomeric region of the ¹³C-NMR spectrum of the products generated by xylanase A cleavage of sweetgum xylan. A total of 2,000 data acquisitions were obtained on a Nicolet FT 300 NMR spectrometer at a frequency of 75.47 MHz, spectral width of 0.02 MHz, at 22°C. Data were processed using FELIX (Molecular Simulations Inc.). Resonance assignments are based on published data (19).