Characterization of a Novel Superoxide Dismutase from a Deep-sea Sea Cucumber (Psychoropotes verruciaudatus)

文献类型： 外文期刊

第一作者： Li, Yanan

作者： Li, Yanan;Chen, Zongfu;Gao, Feng;Lin, Li;Zhang, Peng;Wang, Junfeng;Zhang, Haibin

作者机构：

关键词： Holothuroidea; deep sea; enzyme expression; purification

期刊名称：ANTIOXIDANTS （ 影响因子：7.0； 五年影响因子：7.3 ）

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年卷期： 2023 年 12 卷 6 期

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收录情况： SCI

摘要： At present, deep-sea enzymes are a research hotspot. In this study, a novel copper-zinc superoxide dismutase (CuZnSOD) was successfully cloned and characterized from a new species of sea cucumber Psychropotes verruciaudatus (PVCuZnSOD). The relative molecular weight of the PVCuZnSOD monomer is 15 kDa. The optimum temperature of PVCuZnSOD is 20 & DEG;C, and it maintains high activity in the range of 0-60 degrees C. It also has high thermal stability when incubated at 37 & DEG;C. PVCuZnSOD has a maximum activity of more than 50% in the pH range of 4-11 and a high activity at pH 11. In addition, PVCuZnSOD has strong tolerance to Ni2+, Mg2+, Ba2+, and Ca2+, and it can withstand chemical reagents, such as Tween20, TritonX-100, ethanol, glycerol, isopropanol, DMSO, urea, and GuHCl. PVCuZnSOD also shows great stability to gastrointestinal fluid compared with bovine SOD. These characteristics show that PVCuZnSOD has great application potential in medicine, food, and other products.

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