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Expression and Purification of Recombinant Proteins in Escherichia coli with a His6 or Dual His6-MBP Tag.

  1. Author:
    Raran-Kurussi, Sreejith
    Waugh, David
  2. Author Address

    Macromolecular Crystallography Laboratory, Center for Cancer Research, National Cancer Institute at Frederick, P.O. Box B, Frederick, MD, 21702-1201, USA., Macromolecular Crystallography Laboratory, Center for Cancer Research, National Cancer Institute at Frederick, P.O. Box B, Frederick, MD, 21702-1201, USA. waughd@mail.nih.gov.,
    1. Year: 2017
  1. Journal: Methods in molecular biology (Clifton, N.J.)
    1. 1607
    2. Pages: 1-15
  2. Type of Article: Article
  1. Abstract:

    Rapid advances in bioengineering and biotechnology over the past three decades have greatly facilitated the production of recombinant proteins in Escherichia coli. Affinity-based methods that employ protein or peptide based tags for protein purification have been instrumental in this progress. Yet insolubility of recombinant proteins in E. coli remains a persistent problem. One way around this problem is to fuse an aggregation-prone protein to a highly soluble partner. E. coli maltose-binding protein (MBP) is widely acknowledged as a highly effective solubilizing agent. In this chapter, we describe how to construct either a His6- or a dual His6-MBP tagged fusion protein by Gateway( 174;) recombinational cloning and how to evaluate their yield and solubility. We also describe a simple and rapid procedure to test the solubility of proteins after removing their N-terminal fusion tags by tobacco etch virus (TEV) protease digestion. The choice of whether to use a His6 tag or a His6-MBP tag can be made on the basis of this solubility test.

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External Sources

  1. DOI: 10.1007/978-1-4939-7000-1_1
  2. PMID: 28573567

Library Notes

  1. Fiscal Year: FY2016-2017
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