A procedure for the preparation of continuous rod consisting of poly(glycidyl methacrylate\|co\|ethylene dimethacrylate) for immobilized metal affinity chromatography (IMAC) is presented. When chelating Cu(Ⅱ), Zn(Ⅱ)...A procedure for the preparation of continuous rod consisting of poly(glycidyl methacrylate\|co\|ethylene dimethacrylate) for immobilized metal affinity chromatography (IMAC) is presented. When chelating Cu(Ⅱ), Zn(Ⅱ) or Ni(Ⅱ) on it, the rod displayed a property of IMAC and the selectivity for protein separation was different from that obtained from the naked rod. An abnormal increase in retention times of proteins was found under the condition of either very high pH or very low pH on the metal chelated rods.展开更多
An assay technique for the determination of the human IgG in human plasma has been developed by utilizing protein A immobilized monolithic capillary column. The affinity chromatography experiment was performed on a ca...An assay technique for the determination of the human IgG in human plasma has been developed by utilizing protein A immobilized monolithic capillary column. The affinity chromatography experiment was performed on a capillary electrophoresis instrument by using its pressure system as the driving force. Reactive monolithic capillary columns have been prepared by in-situ copolymerization of the monomers in the presence of porogenic dilute, and protein A was immobilized on the monolithic rods directly or through a 11 carbon atom space arm with molded synthetic methods. The non-specific adsorption of two kinds of media has been studied and the results showed that the medium without space arm gives very low non-specific adsorption of BSA. The affinity column without space arm was used to determine the human immunoglobulin G(HIgG) in human serum. The correlative coefficient of the calibration curve reaches 0 998 7. The total time of rapid analysis was less than 0 7 min. The consumption of eluent buffer and sample is much low than by conventional HPLC.展开更多
文摘A procedure for the preparation of continuous rod consisting of poly(glycidyl methacrylate\|co\|ethylene dimethacrylate) for immobilized metal affinity chromatography (IMAC) is presented. When chelating Cu(Ⅱ), Zn(Ⅱ) or Ni(Ⅱ) on it, the rod displayed a property of IMAC and the selectivity for protein separation was different from that obtained from the naked rod. An abnormal increase in retention times of proteins was found under the condition of either very high pH or very low pH on the metal chelated rods.
文摘An assay technique for the determination of the human IgG in human plasma has been developed by utilizing protein A immobilized monolithic capillary column. The affinity chromatography experiment was performed on a capillary electrophoresis instrument by using its pressure system as the driving force. Reactive monolithic capillary columns have been prepared by in-situ copolymerization of the monomers in the presence of porogenic dilute, and protein A was immobilized on the monolithic rods directly or through a 11 carbon atom space arm with molded synthetic methods. The non-specific adsorption of two kinds of media has been studied and the results showed that the medium without space arm gives very low non-specific adsorption of BSA. The affinity column without space arm was used to determine the human immunoglobulin G(HIgG) in human serum. The correlative coefficient of the calibration curve reaches 0 998 7. The total time of rapid analysis was less than 0 7 min. The consumption of eluent buffer and sample is much low than by conventional HPLC.
