| Autor: |
Hu, Mengkai, Liu, Jun, Gan, Yufei, Zhu, Hao, Han, Rumeng, Liu, Kun, Liu, Yan, Zhao, Ming, Li, Xiangfei, Xue, Zhenglian |
| Předmět: |
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| Zdroj: |
Bioresources & Bioprocessing; 6/25/2024, Vol. 11 Issue 1, p1-12, 12p |
| Abstrakt: |
Phospholipase A1 (PLA1) is a kind of specific phospholipid hydrolase widely used in food, medical, textile. However, limitations in its expression and enzymatic activity have prompted the investigation of the phospholipase-assisting protein PlaS. In this study, we elucidate the role of PlaS in enhancing the expression and activity of PlaA1 through N-terminal truncation. Our research demonstrates that truncating the N-terminal region of PlaS effectively overcomes its inhibitory effect on host cells, resulting in improved cell growth and increased protein solubility of the protein. The yeast two-hybrid assay confirms the interaction between PlaA1 and N-terminal truncated PlaS (∆N27 PlaS), highlighting their binding capabilities. Furthermore, in vitro studies using Biacore analysis reveal a concentration-dependent and specific binding between PlaA1 and ∆N27 PlaS, exhibiting high affinity. Molecular docking analysis provides insights into the hydrogen bond interactions between ∆N27 PlaS and PlaA1, identifying key amino acid residues crucial for their binding. Finally, the enzyme activity of PLA1 was boost to 8.4 U/mL by orthogonal test. Study significantly contributes to the understanding of the interaction mechanism between PlaS and PlaA1, offering potential strategies for enhancing PlaA1 activity through protein engineering approaches. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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