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引用次数: 0
摘要
聚乙二醇改性（PEGylation）是一种广泛应用的策略，可改善各种大分子，尤其是蛋白质药物的理化性质。然而，其在提高分子生物学酶性能方面的应用仍未得到充分探索。本研究探讨了 Bst DNA 聚合酶的 PEG 化，确定了最佳的修饰反应条件。与未修饰的野生型相比，修饰后的 Bst DNA 聚合酶在环介导等温扩增（LAMP）过程中的活性、热稳定性和对抑制剂的耐受性都有显著提高。当用于检测粗样品中的沙门氏菌时，改良酶的反应速度明显加快。因此，PEG 化是改进 DNA 聚合酶的一种可行策略，有助于新型分子诊断试剂的开发。
PEG modification increases thermostability and inhibitor resistance of Bst DNA polymerase.
Polyethylene glycol modification (PEGylation) is a widely used strategy to improve the physicochemical properties of various macromolecules, especially protein drugs. However, its application in enhancing the performance of enzymes for molecular biology remains underexplored. This study explored the PEGylation of Bst DNA polymerase, determining optimal modification reaction conditions. In comparison to the unmodified wild-type counterpart, the modified Bst DNA polymerase exhibited significantly improved activity, thermal stability, and inhibitor tolerance during loop-mediated isothermal amplification. When applied for the detection of Salmonella in crude samples, the modified enzyme demonstrated a notably accelerated reaction rate. Therefore, PEGylation emerges as a viable strategy for refining DNA polymerases, helping in the development of novel molecular diagnostic reagents.
期刊介绍：
Bioscience, Biotechnology, and Biochemistry publishes high-quality papers providing chemical and biological analyses of vital phenomena exhibited by animals, plants, and microorganisms, the chemical structures and functions of their products, and related matters. The Journal plays a major role in communicating to a global audience outstanding basic and applied research in all fields subsumed by the Japan Society for Bioscience, Biotechnology, and Agrochemistry (JSBBA).
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