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2 results on '"Shizhong Mao"'

1. Aryl thiol substrate 3-car peroxidase boxy-4-nitrobenzenethiol strongly stimulating thiolactivity of glutathione peroxidase mimic 2, 2'-ditellurobis(2-deoxy-beta-cyclodextrin)

Author

Zeyuan Dong, Junqui Liu, Shizhong Mao, Xin Huang, Bing Yang, Ren, Xiaojun, Shen, Jiacong, and Guiman Luo

Subjects
Nuclear magnetic resonance spectroscopy -- Usage, Cyclodextrins -- Chemical properties, Thiols -- Chemical properties, Chemistry
Abstract

The complexation of ArSH with beta-cyclodextrin was investigated through UV spectral titrations, fluorescene spectroscopy, (super 1)H NMR and molecular simulation. The results indicated that ArSH fits well to the size of the cavity of beta-cyclodextrin.

Published
2004

2. Semisynthetic tellurosubtilisin with glutathione peroxidase activity

Author

Shizhong Mao, Zeyuan Dong, Junqiu Liu, Xiangqiu Li, Xiaoman Liu, Guimin Luo, and Jiacong Shen

Subjects
Glutathione -- Chemical properties, Catalysis -- Research, Enzymes -- Chemical properties, Chemistry
Abstract

The preparation of semisynthetic telluroenzyme, tellurosubtilism, which is generated by chemically introducing tellurium into the binding site of subtilisin and then acted as an excellent glutathione peroxidase (GPx) minic, is reported. The results show that it can catalyze the reduction of hydroperoxide by an aryl thiol with high catalytic efficiency, but exhibits kinetic properties substantially different from those of selenosubtilisin.

Published
2005

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