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Related Experiment Videos

A new restriction endonuclease from Acetobacter pasteurianus.

J Seurinck, A Van de Voorde, M Van Montagu

    Nucleic Acids Research
    |July 11, 1983
    PubMed
    Summary

    A novel restriction enzyme, ApaI, was purified from Acetobacter pasteurianus. This enzyme specifically targets and cleaves certain DNA sequences, offering a new tool for molecular biology research.

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    Area of Science:

    • Molecular Biology
    • Enzymology
    • Microbiology

    Background:

    • Restriction endonucleases are crucial tools in molecular biology for DNA manipulation.
    • Acetobacter pasteurianus is a bacterium with potential for novel enzyme discovery.

    Purpose of the Study:

    • To partially purify and characterize a novel restriction endonuclease, ApaI, from Acetobacter pasteurianus.
    • To determine the DNA cleavage specificity and recognition sequence of ApaI.

    Main Methods:

    • Partial purification of ApaI from Acetobacter pasteurianus.
    • DNA cleavage assays using various viral and plasmid DNA substrates (bacteriophage lambda, Simian virus 40, adenovirus-2, phi X174, plasmid pBR322).

    Main Results:

    • ApaI was successfully partially purified.
    • The enzyme cleaved bacteriophage lambda DNA and Simian virus 40 DNA at one site each.
    • Adenovirus-2 DNA was cleaved at more than nine sites, while phi X174 DNA and plasmid pBR322 DNA were not cleaved.
    • ApaI recognizes a specific DNA sequence and cuts at defined sites.

    Conclusions:

    • ApaI is a novel restriction endonuclease with unique DNA cleavage properties.
    • The enzyme's specificity makes it a potentially valuable tool for molecular cloning and genetic engineering applications.

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