Effects of temperature and pH on the catalytic activity of rHrGSTm1

MZ Meichen Zhao
ZG Zhihua Gao
XJ Xin Ji
KW Kuang Wang
SZ Songbo Zhang
YS Yanqing Shi
XS Xuecheng Song
ZY Zhijun Yu
XY Xiaolong Yang
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The catalytic activity of rHrGSTm1 was determined by water bath treatment at different temperatures (10 °C, 20 °C, 30 °C, 40 °C, 50 °C, 60 °C, 70 °C and 80 °C) for 15 min. Eight pH buffers (pH 6.0, 6.5, 7.0, 7.5, 8.0, 8.5 and 9.0) were used to detect the catalytic activity of rHrGSTm1, determined using phosphate buffers (100 mM) at pH 6.0, 6.5, 7.0, 7.5 and 8.0, and Tris hydrochloric acid buffers (100 mM) at pH 8.5 and 9.0. For the negative control, the denatured recombinant protein boiled for 7 min was used as the substrate. The experiment was repeated three times, and the highest enzyme activity was regarded as 100%.

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