对Lactobacillus acidophilusS层蛋白质的结合域的适应,作为亲和染色学发展的分子标签
Emanuel J Muruaga1,2, Paula J Uriza1,2, Gonzalo A K Eckert1,2
1Instituto de Investigaciones Biotecnológicas, Universidad Nacional de San Martín (UNSAM)- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.
Frontiers in microbiology
|June 29, 2023
概括
一种基于SLAPTAG的新型亲和染色法 (SAC) 有效净化重组蛋白质. 这种具有成本效益的技术,使用可重复使用的Bacillus subtilis矩阵,提供与商业方法相匹配的性能,并有可能用于高吞吐量应用.
科学领域:
- 生物化学 生物化学
- 蛋白质净化 蛋白质的净化
- 亲属性染色学是一种亲属性染色学.
背景情况:
- S层蛋白质在细菌和古细胞表面上形成格子.
- 乳杆菌酸性 SlpA 的 SLAPTAG 域调解了表面关联.
- SLAPTAG已经适应了一种新的亲和力染色学方法.
研究的目的:
- 开发和描述一种基于SLAPTAG的亲和色谱 (SAC) 方法,用于重组蛋白质净化.
- 评估开发的亲和关系矩阵的效率,稳定性和可重复使用性.
- 探索SAC的磁性适应,以应用于潜在的高通量应用.
主要方法:
- 与SLAPTAG融合的蛋白质使用Bacillus subtilis衍生的亲和力矩阵 (生物矩阵,BM) 进行净化.
- 结合和化条件得到了优化.
- 将SAC性能与固定金属亲和色谱 (IMAC) 进行比较;评估矩阵稳定性和可重复使用性;开发磁性SAC (BMmag).
主要成果:
- 优化的SAC在4°C以4.3μM的KD时在几分钟内达到结合平衡.
- SAC的净化性能与商业IMAC的净化性能相当.
- 生物矩阵稳定超过一年,可重复使用多达五次,并适应磁性分离 (BMmag).
结论:
- SAC是一种通用,具有成本效益的用于重组蛋白净化的工具,适合内部实验室系统.
- 该方法可以生产用于研究,诊断和食品工业的纯重组蛋白质.
- 磁性SAC为高通量蛋白质的生产和净化提供了潜力.
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