High level expression and simple purification of recombinant human granulocyte colony-stimulating factor in E. coli
1995
A human granulocyte colony-stimulating factor (hG-CSF) gene was synthesized and inserted into a trp expression vector for over-expression in E. coli. A strong expression vector was constructed, and a simple purification procedure including in vitro refolding was established. The final productivity of hG-CSF was 500~600mg per l culture, and the purified hG-CSF showed the proliferation of neutrophils in vivo assays.
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