Table 1. Effect of ions, EDTA and EGTA on the catalytic activity of endoxylanase SCXy1 from sugarcane soil metagenome.

Ions or ChemicalReagents	Concentration (mM)	Relative Activity (%)
Control	–	100.00
EDTA	10 mM	92.01±1.92
EGTA	10 mM	85.08±2.55
CaCl2	5 mM	93.56±9.82
ZnSO4	5 mM	0.00
MnCl2	5 mM	50.19±6.25
MgCl2	5 mM	89.24±7.82
CuSO4	5 mM	0.00
LiCl	5 mM	99.04±1.86
KCl	5 mM	107.06±7.08
NaCl	5 mM	95.98±3.99
CoCl2	5 mM	48.12±12.9
FeCl3	5 mM	4.28±0.27
NiCl2	5 mM	29.29±5.73