High-level expression of a recombinant fragment of human fibronectin containing the Cell I–Hep II–IIICS71 domain in Escherichia coli as a soluble protein (original) (raw)

Abstract

Fibronectin (FN) is a major matrix protein that is involved in multiple processes. Its Cell I–Hep II domain is potentially useful in tumor therapy. Here, a recombinant fragment of FN with the Cell I–Hep II-IIICS71 domain, CH/71, was expressed in Escherichia coli. The CH/71 fusion protein consists of Cell I–Hep II domain and 19th to 89th amino acids of IIICS domain of FN. The expression level of CH/71 in E. coli was very high after induction with IPTG. Furthermore, CH/71 protein was largely found in the soluble fraction. It was readily purified by one-step heparin–agarose affinity chromatograph. The ability of CH/71 binding cells was about 8-fold of that of Cell I–Hep II domain FN.

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Acknowledgements

This work was supported by grants from National Natural Science Foundation of China (39370783) and the Medical Science Foundation of Guangdong Province, China (No. A2003484).

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Authors and Affiliations

  1. Allergy and Inflammation Research Institute, Shantou University Medical College, Shantou, 515041, P.R. China
    Mingcai Li
  2. Department of Biochemistry and Molecular Biology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P.R. China
    Mingcai Li, Zuohua Feng, Guimei Zhang & Dong Li

Authors

  1. Mingcai Li
  2. Zuohua Feng
  3. Guimei Zhang
  4. Dong Li

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Correspondence toMingcai Li.

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Li, M., Feng, Z., Zhang, G. et al. High-level expression of a recombinant fragment of human fibronectin containing the Cell I–Hep II–IIICS71 domain in Escherichia coli as a soluble protein.Biotechnol Lett 28, 1141–1146 (2006). https://doi.org/10.1007/s10529-006-9066-y

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