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Table 1 Effects of metal ions on the activity of the rPoMan5A

From: A new acidophilic thermostable endo-1,4-β-mannanase from Penicillium oxalicum GZ-2: cloning, characterization and functional expression in Pichia pastoris

Metal ions Relative activity (%)
1 mM 10 mM
Control 100.0 ± 2.7
Ca2+ 95.2 ± 0.3 98.6 ± 0.9
Cd2+ 97.2 ± 0.7 105.1 ± 2.7
Cr3+ 100.9 ± 0.3 101.1 ± 0.3
Co2+ 100.0 ± 1.4 94.0 ± 0.2
Cu2+ 86.5 ± 3.0 57.1 ± 3.8
Ba2+ 98.6 ± 1.7 104.6 ± 0.9
Mg2+ 97.6 ± 0.2 103.6 ± 0.8
Mn2+ 85.4 ± 1.3 99.6 ± 2.4
Ni2+ 95.4 ± 1.5 98.7 ± 5.6
Li+ 97.1 ± 1.0 105.7 ± 3.2
Fe2+ 97.1 ± 1.0 103.5 ± 2.0
Fe3+ 64.9 ± 3.3 50.0 ± 2.8
Hg2+ 64.9 ± 3.3 0.0 ± 0.0
  1. Data are the mean ± standard deviation of three repeats.