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Specialized cell surface structures in cellulolytic bacteria.

R Lamed, J Naimark, E Morgenstern

    Journal of Bacteriology
    |August 1, 1987
    PubMed
    Summary
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    Scanning electron microscopy revealed unique cell surface structures on cellulolytic bacteria. These structures, containing cellulase enzymes, are crucial for bacterial cellulose degradation.

    Area of Science:

    • Microbiology
    • Biochemistry
    • Cell Biology

    Background:

    • Bacterial cellulose degradation is vital for nutrient cycling.
    • The structure of cellulolytic bacteria's cell surface is not fully understood.
    • Cellulases are key enzymes in breaking down cellulose.

    Purpose of the Study:

    • To investigate the cell surface topology of diverse bacteria.
    • To identify structures related to cellulose degradation in cellulolytic bacteria.
    • To explore the molecular correlation among cellulolytic bacteria.

    Main Methods:

    • Scanning electron microscopy (SEM) was employed.
    • Cationized ferritin was used as a visualizing agent.
    • Immunochemical and lectin-binding studies were conducted.

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    Main Results:

    • Characteristic protuberant structures were observed on all cellulolytic bacterial strains.
    • These structures were linked to exocellular cellulase-containing polycellulosomes.
    • Immunochemical and lectin-binding data suggested molecular correlations among cellulolytic bacteria.

    Conclusions:

    • Cell surface structures containing cellulase are common in cellulolytic bacteria.
    • These structures likely play a significant role in bacterial cellulose interaction and degradation.
    • Findings suggest a general mechanism for bacterial cellulose breakdown.