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Urea gradient SEC in renaturation with simultaneous purification of rhSCF
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- Author:
- No author available
- Journal Title:
- JOURNAL OF THE FOURTH MILITARY MEDICAL UNIVERSITY
- Issue:
- 15
- DOI:
- 10.3321/j.issn:1000-2790.2005.15.002
- Key Word:
- 脲梯度;色谱法;重组人干细胞因子;大肠杆菌
Abstract： 目的:用脲梯度体积排阻色谱(SEC)复性并同时纯化在大肠杆菌中高表达的人干细胞因子.方法:采用脲梯度SEC,根据蛋白质与小分子物质分离过程的迁移速度不同的原理,在色谱过程中通过脲浓度的线性梯度洗脱方式脱除变性剂脲而达到蛋白复性并同时纯化.结果:用脲梯度SEC复性重组人干细胞因子(rhSCF)能够使复性蛋白的产率提高,色谱过程中洗脱长度、流速以及蛋白浓度的变化对蛋白复性效率都有不同的影响.结论:用脲梯度SEC复性rhSCF可以使复性产率提高,其质量回收率从35.2%提高到51.4%.
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