在重组His标记蛋白质净化中,用于固定金属离子亲和力色谱的新型黑色素衍生静止相
Hong-Nhung Le Thi1, Ngoc-Tram Le1, Thu-Hoai Bui Thi1
1Department of Biochemistry and Molecular Biology, Faculty of Biology, VNU University of Science, Vietnam National University, 100000, Hanoi, Viet Nam.
Protein expression and purification
|February 16, 2024
概括
研究人员开发了新的Ni-melanin/alginate (Ni-M/A) 珠子,用于净化His标记蛋白质. 这种天然聚合物矩阵在单个步骤中实现了97%的纯度,显示了亲和色谱应用的巨大潜力.
科学领域:
- 生物化学 生化学
- 材料科学 材料科学 材料科学
- 染色体学 染色体学 是一种染色学.
背景情况:
- 亲和色谱对于蛋白质净化至关重要.
- 用于His标记蛋白质净化的矩阵通常使用合成聚合物或磁性材料.
- 自然聚合物为染色体矩阵提供了可持续的替代品.
研究的目的:
- 合成和评估用于His标记蛋白质净化的新型Ni-氨酸/氨酸 (Ni-M/A) 珠.
- 在Ni-M/A矩阵上研究His标记的Mpro的结合和化特性.
- 为了评估使用这种新净化系统实现的效率和纯度.
主要方法:
- 尼-黑色素/酸 (Ni-M/A) 珠子的合成.
- 使用里埃变换红外光谱学 (FTIR),能量分散式X射线光谱学 (EDS) 和X射线衍射 (XRD) 进行了表征.
- 蛋白质纯度和结合能力通过SDS-PAGE,Western blotting和结合测试进行评估.
主要成果:
- FTIR证实了Mpro蛋白与Ni-M/A矩阵之间的化学相互作用.
- XRD和EDS数据显示Mpro成功与珠子中的离子结合.
- 在单个净化步骤中实现了His标记的Mpro97%的纯度.
- 证明约有5.2mg/g的结合能力,恢复效率为40%.
结论:
- 尼-氨酸/酸盐 (Ni-M/A) 珠子代表了对His标记蛋白质净化的有前途的天然聚合物基质矩阵.
- 这种方法提供了一种高纯度,单步净化策略.
- 进一步的研究可以优化Ni-M/A珠子,用于蛋白质净化中的更广泛应用.
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