Cloning, Expression, and Characterization of Xylanase G2 from Aspergillus oryzae VTCC-F187 in Aspergillus niger VTCC-F017

Table 4

Effect of metal ions and EDTA on the recombinant xylanase G2 activity.

Additive (10 mM)	Residual activity (%)^a
Mg^2+
Fe^2+
Cu^2+
Ca^2+
Ag^+
Ni^2+
K^+
EDTA
Zn^2+
Hg^2+

^aRelative activity was expressed as a percentage of the control reaction without any additive (100% xlnG2 activity was  U/mg).