Journal
ANTIOXIDANTS
Volume 12, Issue 6, Pages -Publisher
MDPI
DOI: 10.3390/antiox12061227
Keywords
Holothuroidea; deep sea; enzyme expression; purification
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In this study, a novel copper-zinc superoxide dismutase (CuZnSOD) was cloned and characterized from a new sea cucumber species Psychropotes verruciaudatus (PVCuZnSOD). The PVCuZnSOD showed optimum temperature at 20 degrees C and maintained high activity from 0-60 degrees C. It also exhibited strong tolerance to various ions and chemical reagents, indicating its potential applications in medicine, food, and other products.
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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