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Table 1 Effects of cations and reagents on purified BGL activity

From: Thermoanaerobacterium thermosaccharolyticum β-glucosidase: a glucose-tolerant enzyme with high specific activity for cellobiose

Cation of reagenta

Residual activity (%)

Control

100

Fe2+

172

Mg2+

104

Zn2+

7

Mn2+

223

Ca2+

108

K+

101

Al3+

43

Li+

110

Cu2+

2

Hg2+

0

Co2+

37

Ag2+

19

EDTA (10 mM)

102

  1. a Final concentration, 1 mM or as indicated. Values shown are the mean of duplicate experiments, and the variation about the mean was below 5%.