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C@Fe3O4/NTA-Ni magnetic nanospheres purify histidine-tagged fetidin: A technical note

机译:C @ Fe3O4 / NTA-Ni磁性纳米球可纯化组氨酸标签的提替丁:技术说明

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This study reports synthesis of Ni-nitrilotriacetic acid (Ni-NTA) modified carbon nanospheres containing magnetic Fe3O4?particles (C@Fe3O4), which can act as a general tool to separate and purify histidine-tagged fetidin. In this experiment, C nanospheres are prepared from glucose using the hydrothermal process, magnetic Fe3O4?are packed in the porous C nanospheres and Ni-NTA are conjugated to C@Fe3O4. C@Fe3O4/NTA-Ni nanospheres are about 400 nm in diameter, providing the nanospheres with excellent magnetic response and dispersity. This study separates recombinant fetidin that are engineered to have six consecutive histidine residues (6×His) by treating with C@Fe3O4/NTA-Ni magnetic nanospheres. 10 mg of C@Fe3O4/NTA-Ni nanospheres can purify up to 2.103 mg of high-purity 6×His-tagged fetidin from 10 ml of crude?Escherichia coli?lysates. Because of high performance, C@Fe3O4/NTA-Ni nanospheres can also be used to separate low concentration 6×His-tagged proteins.
机译:这项研究报道了含有磁性Fe3O4?颗粒(C @ Fe3O4)的镍三三乙酸(Ni-NTA)改性的碳纳米球的合成,可以用作分离和纯化带有组氨酸标签的fetidin的通用工具。在该实验中,使用水热法由葡萄糖制备C纳米球,将磁性Fe3O4?填充在多孔C纳米球中,并将Ni-NTA与C @ Fe3O4共轭。 C @ Fe3O4 / NTA-Ni纳米球的直径约为400 nm,为纳米球提供了出色的磁响应和分散性。这项研究通过用C @ Fe3O4 / NTA-Ni磁性纳米球处理,分离了工程改造为具有六个连续组氨酸残基(6xHis)的重组fetidin。 10 mg的C @ Fe3O4 / NTA-Ni纳米球可以从10 ml的粗大肠杆菌裂解物中纯化出2.103 mg的高纯度6×His标记的fetidin。由于具有高性能,C @ Fe3O4 / NTA-Ni纳米球也可用于分离低浓度的6×His标签蛋白。

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