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[Lytic enzymes produced by Actinomyces levoris]

Z F Shmakova, N S Zen'kovich, E P Savel'ev

    Mikrobiologiia
    |May 1, 1978
    PubMed
    Summary

    Actinomyces levoris produces an enzyme complex that lyses Streptococcus lactis cell walls. This complex contains seven enzymes, including specific glucosidases and specific/non-specific lytic proteases, each with distinct roles in cell wall degradation.

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    Area of Science:

    • Microbiology
    • Enzymology
    • Biochemistry

    Background:

    • Actinomyces levoris possesses the ability to produce enzymes targeting bacterial cell walls.
    • Streptococcus lactis cell wall composition presents a target for enzymatic lysis.

    Purpose of the Study:

    • To elucidate the enzymatic composition of the lytic complex from Actinomyces levoris.
    • To characterize the enzymes responsible for Streptococcus lactis cell wall degradation.

    Main Methods:

    • Gel filtration chromatography using Sephadex G-25.
    • Ion exchange chromatography.
    • Isoelectric focusing (IEF) to determine enzyme isoelectric points (pI).

    Main Results:

    • The enzyme complex comprises at least seven distinct enzymes.
    • Enzymes were categorized into three groups based on isoelectric points and activity: a specific glucosidase (pI 10.2), specific lytic proteases (pI 9.2, 9.0), and non-specific lytic proteases (pI 10.0, 9.5, 5.7, 4.2).
    • Differential lytic and proteolytic activities were observed among the enzyme groups.

    Conclusions:

    • The enzyme complex from Actinomyces levoris is a multi-component system with diverse enzymatic activities.
    • Specific glucosidase and various lytic proteases contribute to the lysis of Streptococcus lactis cell walls.

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