Shigeoka S, Nakano Y, Kitaoka S
Biochem J. 1980 Jan 15;186(1):377-80. doi: 10.1042/bj1860377.
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.
人们发现纤细裸藻在其细胞质中含有一种过氧化物酶,该酶特别需要L-抗坏血酸作为天然电子供体。在裸藻细胞中证实存在代谢L-抗坏血酸的氧化还原系统。过氧化物酶对L-抗坏血酸的氧化作用以及抗坏血酸氧化酶活性的缺失表明,该系统在缺乏过氧化氢酶的纤细裸藻中发挥着清除过氧化氢的作用。