期刊
JOURNAL OF MATERIALS CHEMISTRY B
卷 1, 期 38, 页码 5108-5113出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3tb20726a
关键词
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资金
- National Natural Science Foundation of China [21271062]
- Construction Fund of Henan Province
- Department of Education [SBGJ090515]
- National Basic Research Program of China [2012CB114301]
Ferroferric oxide/L-cysteine (Fe3O4/Cys) nanospheres (NSs) have been successfully synthesized via a facile solvothermal route. Fe3O4/Cys NSs possessed high thiol group density and saturation magnetization (M-s) of 84.6 emu g(-1). The prepared magnetic NSs are biocompatible and manipulatable by an external magnetic force. After chelating Ni2+ ions, Fe3O4/Cys-Ni2+ NSs were used to enrich and purify histidine-tagged (His-tagged) proteins directly from the mixture of lysed cells without pretreatment. It has been found that Fe3O4/Cys-Ni2+ NSs present negligible nonspecific protein adsorption and high protein binding activity with the saturation capacity being 53.2 mu g mg(-1) and they are especially suitable for rapid purification of His-tagged proteins.
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