Purification and Characterization of Haloalkaline, Organic Solvent Stable Xylanase from Newly Isolated Halophilic Bacterium-OKH

Table 4

Effect of metal ions and reducing agents on xylanase activity from halobacterium-OKH.

Metal ion/chemical	Relative activity (%)
	2 mM	5 mM
Control	100	100
Ca^2+	146	151
Ag^2+	0	0
Hg^2+	0	0
Co^2+	65	63
Fe^3+	0	0
Mg^2+	119	125
Mn^2+	138	142
Ni^2+	121	107
Cu^2+	0	0
Cd^2+	0	0
Zn^2+	0	0
Mercaptoethanol	126	117
EDTA	35	21