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Related Experiment Videos

Lambda foo: a lambda phage vector for the expression of foreign proteins

I N Maruyama1, H I Maruyama, S Brenner

  • 1Department of Cell Biology, Scripps Research Institute, La Jolla, CA 92037.

Proceedings of the National Academy of Sciences of the United States of America
|August 16, 1994
PubMed
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Researchers developed a lambda phage expression system to display foreign proteins on virus surfaces. This system enables the production of functional fusion proteins, like beta-galactosidase, on phage particles for potential applications.

Area of Science:

  • Molecular Biology
  • Virology
  • Biotechnology

Background:

  • Bacteriophage lambda is a well-characterized viral system.
  • Display of foreign proteins on viral surfaces offers novel applications in biotechnology and diagnostics.
  • Efficient methods for producing and purifying functional fusion proteins are needed.

Purpose of the Study:

  • To develop a novel lambda phage expression system, termed lambda foo, for the display of foreign proteins on the phage particle surface.
  • To demonstrate the functionality of the displayed proteins.
  • To establish purification methods for the recombinant phage particles.

Main Methods:

  • Construction of the lambda foo vector with multiple cloning sites and color selection.
  • Fusion of foreign protein genes to the C terminus of a truncated phage tail protein (pV) via a peptide linker.

Related Experiment Videos

  • Utilizing conditional chain termination for multisubunit protein assembly.
  • Cloning and expression of Escherichia coli beta-galactosidase and Bauhinia purpurea agglutinin genes.
  • Purification of recombinant phage particles using affinity chromatography.

    • Main Results:

    • The lambda foo system successfully produced foreign proteins fused to the phage particle surface.
    • Functionally active Escherichia coli beta-galactosidase and Bauhinia purpurea agglutinin were displayed on the phage.
    • Purification of the fusion protein-displaying phage was achieved using specific antibodies and ligands.

    Conclusions:

    • The lambda foo expression system is a viable platform for displaying functional foreign proteins on bacteriophage lambda particles.
    • This system facilitates the production of novel protein fusions with potential applications in diagnostics, therapeutics, and biocatalysis.
    • The demonstrated purification methods highlight the practical utility of this phage display technology.