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A shuttle vector system for Brevibacterium lactofermentum.

P Yeh, J Oreglia, F Prévots

    Gene
    |January 1, 1986
    PubMed
    Summary
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    Researchers developed a novel shuttle vector for Escherichia coli, Corynebacterium glutamicum, and Brevibacterium lactofermentum. This engineered plasmid enables efficient genetic manipulation across these key bacterial species.

    Area of Science:

    • Microbiology
    • Molecular Biology
    • Biotechnology

    Background:

    • Development of versatile genetic tools is crucial for microbial research and biotechnology.
    • Existing vectors may have limitations in host range or efficiency for certain bacterial species.
    • Brevibacterium lactofermentum and Corynebacterium glutamicum are important industrial microorganisms.

    Purpose of the Study:

    • To construct a novel shuttle vector capable of replication in multiple bacterial hosts.
    • To facilitate genetic engineering in Escherichia coli, Corynebacterium glutamicum, and Brevibacterium lactofermentum.
    • To establish a reliable method for bacterial transformation using the new vector.

    Main Methods:

    • Fusion of a cryptic plasmid from Brevibacterium lactofermentum with a pBR322 derivative.

    Related Experiment Videos

  • Construction of a hybrid plasmid conferring erythromycin resistance.
  • Testing replication and transformation efficiency in Escherichia coli, Corynebacterium glutamicum, and Brevibacterium lactofermentum.

    • Main Results:

    • A functional shuttle vector was successfully constructed.
    • The vector demonstrated replication in all three target bacterial species: Escherichia coli, Corynebacterium glutamicum, and Brevibacterium lactofermentum.
    • Erythromycin resistance served as an effective selective marker.
    • A high frequency of homospecific transformation (1.5 x 10^5 transformants/micrograms DNA) was achieved.

    Conclusions:

    • The developed shuttle vector is a valuable tool for genetic manipulation in a broad range of bacteria.
    • This vector enhances the potential for genetic engineering in industrial microorganisms like C. glutamicum and B. lactofermentum.
    • The study provides a foundation for further advancements in microbial biotechnology.