TABLE 1

Kinetic data for the four xylanases with beech wood xylan as the substrate

XylanaseKm (mg ml−1)Vmax (μmol min−1 mg−1)kcat (s−1)kcat/Km (ml s−1 mg−1)
XynA5.40 ± 0.192,071 ± 301,521 ± 18282
XynA-Tr7.05 ± 1.88222 ± 15139 ± 419.8
XynB-Fu1.71 ± 0.13812 ± 17605 ± 8354
XynB4.55 ± 0.4394.4 ± 3.759.8 ± 2.813.1