Abstract
Objectives
To improve the expression of soluble IBDV VP2 protein by using different tagged vectors in Escherichia coli.
Results
Fusion tags, Grifin, MBP, SUMO, thioredoxin, γ-crystallin, ArsC and PpiB, enhanced the expression and solubility of VP2 protein. The fusion proteins were purified by Ni–NTA chromatography, MBP-VP2 showed the highest purity about 90 %. After removing the MBP tag, VP2 self-assembled into virus-like particles, ~25 nm diam. Results from AGP suggested the recombinant IBDV VP2 protein identified by reference serum like IBDV.
Conclusion
All the seven tags enhanced the expression and solubility of IBDV VP2 protein. The recombinant protein self-assembly into virus like particles and possess antigenicity as reference IBDV.
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Acknowledgments
This work study was supported by the grant from program of the National Nature Science Foundation of China (No.31472177), and Major Program of Science and Technology in Henan (141100110100), and Henan Province Scientific and technological innovation talent program in Colleges (14HASTIT027), and the Key Scientific and Technological Project of Henan Province, China (152102110128).
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Jiang, D., Liu, Y., Wang, A. et al. High level soluble expression and one-step purification of IBDV VP2 protein in Escherichia coli . Biotechnol Lett 38, 901–908 (2016). https://doi.org/10.1007/s10529-016-2073-8
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DOI: https://doi.org/10.1007/s10529-016-2073-8