Penaeus vannamei protease stabilizing process of ZnS nanoparticles
| Autor: | Ahmad Homaei, Mozhgan Razzaghi, Elaheh Mosaddegh |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Immobilized enzyme
medicine.medical_treatment Nanoparticle 02 engineering and technology Sulfides 01 natural sciences Biochemistry Dynamic light scattering Microscopy Electron Transmission Penaeidae Structural Biology Enzyme Stability Spectroscopy Fourier Transform Infrared medicine Animals Enzyme kinetics Penaeus Molecular Biology chemistry.chemical_classification Protease biology 010405 organic chemistry General Medicine 021001 nanoscience & nanotechnology biology.organism_classification Enzymes Immobilized Dynamic Light Scattering 0104 chemical sciences Kinetics Enzyme chemistry Transmission electron microscopy Zinc Compounds Nanoparticles 0210 nano-technology Nuclear chemistry Biotechnology Peptide Hydrolases |
| Zdroj: | International journal of biological macromolecules. 112 |
| ISSN: | 1879-0003 |
| Popis: | The protease enzyme purified from the Penaeus vannamei shrimp has unique properties, so improving the stability of this enzyme can improve their practical applications. In this study, ZnS nanoparticles, which have special properties for enzyme immobilization, were synthesized using a chemical precipitation method, and Penaeus vannamei protease was successfully immobilized on them. The size, structure, and morphology of the ZnS nanoparticles, and the immobilization of the protease were studied, using Transmission Electron Microscopy (TEM), Fourier Transform Infrared (FT-IR) spectroscopy, UV-Vis spectroscopy and Dynamic Light Scattering (DLS) analysis. We show that the immobilized enzyme has improved functionality at high temperatures, extreme pH conditions (pH3 and 12), and during storage. Immobilization increased the optimum temperature range of the enzyme, but did not change the pH optimum, which remained at pH7. Immobilization of P. vannamei protease enzyme increased the Km and decreased kcat/Km. These results indicate that P. vannamei protease immobilized on ZnS nanoparticles, has improved properties due to its high stability and unique properties, can be used for biotechnology applications. |
| Databáze: | OpenAIRE |
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