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Microbodies in methanol-assimilating yeasts.

J P van Dijken, M Veenhuis, N J Kreger-van Rij

    Archives of Microbiology
    |January 1, 1975
    PubMed
    Summary

    Yeast cells grown on methanol contain numerous microbodies, which are essential for methanol assimilation. These microbodies are absent or minimal when yeast is grown on glucose or ethanol.

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    Area of Science:

    • Microbiology
    • Cell Biology
    • Biochemistry

    Background:

    • Methanol assimilation is a key metabolic process in certain yeast species.
    • Microbodies are specialized organelles involved in various metabolic pathways.
    • Understanding the cellular structures involved in methanol metabolism is crucial for industrial and biotechnological applications.

    Purpose of the Study:

    • To investigate the presence and abundance of microbodies in methanol-assimilating yeast species.
    • To determine the effect of different carbon sources on microbody formation in these yeasts.

    Main Methods:

    • Electron microscopy was used to examine yeast cell ultrastructure.
    • Three species of yeast capable of assimilating methanol were cultured.
    • Cells were grown on methanol, glucose, or ethanol as the sole carbon and energy source.

    Main Results:

    • Yeast cells grown on methanol as the sole carbon source exhibited a high number of microbodies.
    • Cells grown on glucose or ethanol showed either no microbodies or only a limited presence.
    • The presence of microbodies directly correlated with the ability of yeast to utilize methanol.

    Conclusions:

    • Microbodies play a significant role in methanol assimilation in yeast.
    • The metabolic conditions, specifically the carbon source, influence the proliferation of microbodies.
    • These findings highlight the specialized cellular adaptations of yeast for methanol utilization.

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