目的:利用大肠杆菌表达可溶性的hCTRP2球状功能区蛋白。方法重组表达载体转化大肠杆菌BL21-codonplus (DE3)菌株、IPTG诱导表达,并利用镍亲合纯化和分子筛纯化。结果 hCTRP2球状功能区蛋白实现了在大肠杆菌中的高效表达和纯化,重组蛋白在细胞和动物水平上都具有生物活性。结论利用大肠杆菌表达系统高效制备了具有生物活性的hCTRP2球状功能区蛋白。%Aim To prepare soluble global human C1 q and tumor necrosis factor related protein-2 in Escherichia coli. Methods Recombinant expression plasmid was transformed into strain BL21-codonplus (DE3),and the recombinant protein of Trx-gH2 was expressed by IPTG induction and then purified by Ni-NTA affinity and gel filtration chromatography.Results The purified recombinant Trx-gH2 was shown to be active under in vi-vo and in vitro assay conditions.Conclusion Active recombi-nant global hCTRP2 is efficiently prepared from Escherichia coli protein expression system.
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