BioMed Research International / 2015 / Article / Tab 1

Research Article

Molecular Characterization of a New Alkaline-Tolerant Xylanase from Humicola insolens Y1

Table 1

Effect of 5 mM metal ions and chemical reagents on the xylanase activity of Xyn11B.

ChemicalsRelative activity (%)aChemicalsRelative activity (%)

None100.0 ± 1.2Ca2+95.7 ± 1.2
Mn2+110.4 ± 2.8Cr3+93.0 ± 0.6
Na+101.6 ± 1.3Pb2+91.6 ± 1.8
Li+100.6 ± 1.4Cu2+87.0 ± 2.3
Co2+100.6 ± 0.9Ag+76.5 ± 2.1
Zn2+99.6 ± 2.2Hg2+0
K+99.2 ± 0.4β-Mercaptoethanol160.6 ± 4.7
Fe3+98.7 ± 1.6EDTA96.1 ± 1.1
Mg2+96.6 ± 0.8SDS28.2 ± 3.2

Values represent the mean ± SD ( = 3) relative to untreated samples.