scholarly journals Metabolism of hydrogen peroxide in Euglena gracilis Z by L-ascorbic acid peroxidase

1980 ◽  
Vol 186 (1) ◽  
pp. 377-380 ◽  
Author(s):  
S Shigeoka ◽  
Y Nakano ◽  
S Kitaoka
Keyword(s):  
Hydrogen Peroxide ◽  
Ascorbic Acid ◽  
Electron Donor ◽  
Euglena Gracilis ◽  
Oxidase Activity ◽  
Acid Oxidase ◽  
Ascorbic Acid Oxidase ◽  
Reduction System ◽  
Oxidation Reduction ◽  
Euglena Gracilis Z

Euglena gracilis was found to contain a peroxidase that specifically require L-ascorbic acid as the natural electron donor in the cytosol. The presence of an oxidation-reduction system metabolizing L-ascorbic acid was demonstrated in Euglena cells. Oxidation of L-ascorbic acid by the peroxidase, and the absence of ascorbic acid oxidase activity, suggests that the system functions to remove H2O2 in E. gracilis, which lacks catalase.

An in situ electron donor consumption strategy for photoelectrochemical biosensing of proteins based on ternary Bi2S3/Ag2S/TiO2 NT arrays

2018 ◽  
Vol 54 (7) ◽  
pp. 806-809 ◽  
Author(s):  
Bing Wang ◽  
Jun-Tao Cao ◽  
Yu-Xiang Dong ◽  
Fu-Rao Liu ◽  
Xiao-Long Fu ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Electron Donor ◽  
Acid Oxidase ◽  
Ascorbic Acid Oxidase ◽  
First Time

An ascorbic acid oxidase–ascorbic acid bioevent-based electron donor consumption mode is introduced into the PEC bioassay for the first time.

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