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Broad host range cloning vectors for gram-negative bacteria.

G S Sharpe

    Gene
    |July 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    New cloning vectors were developed from the R300B plasmid, offering versatile tools for molecular biology. The pGSS33 vector features four antibiotic resistance genes for insertional inactivation, aiding gene cloning experiments.

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    Area of Science:

    • Molecular Biology
    • Genetics
    • Biotechnology

    Background:

    • Broad-host-range plasmids are essential tools for genetic manipulation across diverse bacterial species.
    • The R300B plasmid is a well-characterized replicon suitable for developing novel cloning vectors.

    Purpose of the Study:

    • To construct and characterize a series of novel cloning vectors based on the R300B plasmid.
    • To provide researchers with versatile tools for gene cloning and manipulation.

    Main Methods:

    • Plasmid construction using established molecular cloning techniques.
    • Characterization of plasmid size and antibiotic resistance gene profiles.
    • Identification of restriction sites for insertional inactivation.

    Main Results:

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    • A series of cloning vectors were successfully derived from the R300B plasmid.
    • The pGSS33 vector (13.4 kb) was characterized, containing ampicillin, chloramphenicol, streptomycin, and tetracycline resistance genes.
    • Each resistance gene possesses unique restriction sites amenable to insertional inactivation.

    Conclusions:

    • The developed cloning vectors, particularly pGSS33, offer robust options for molecular cloning applications.
    • The presence of multiple antibiotic resistance markers with insertional inactivation sites enhances their utility in genetic studies.
    • These vectors facilitate gene cloning and manipulation across various host organisms.