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Related Experiment Videos

Ribonucleic acid polymerase in Allomyces arbuscula.

A K Cain, E W Nester

    Journal of Bacteriology
    |September 1, 1973
    PubMed
    Summary

    Researchers isolated three ribonucleic acid (RNA) polymerase enzymes from Allomyces arbuscula. The study found no evidence that these RNA polymerases significantly control fungal development stages.

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    Area of Science:

    • Mycology
    • Molecular Biology
    • Biochemistry

    Background:

    • Ribonucleic acid (RNA) polymerase is crucial for gene transcription in eukaryotes.
    • Understanding RNA polymerase in fungi like Allomyces arbuscula can elucidate developmental regulation.

    Purpose of the Study:

    • To characterize RNA polymerase enzymes in Allomyces arbuscula.
    • To investigate the potential role of RNA polymerase in fungal development.

    Main Methods:

    • Diethylaminoethyl-cellulose chromatography was used to resolve RNA polymerase species.
    • Enzyme characterization involved ionic strength and divalent cation preference analysis.
    • RNA polymerase was isolated from different life cycle stages: hyphal growth, sporangia formation, and mitospores.

    Main Results:

    • Three distinct RNA polymerase species were identified in Allomyces arbuscula.
    • Enzyme II was specifically inhibited by alpha-amanitin.
    • Rifampin and cycloheximide did not affect any of the three RNA polymerase enzymes.
    • The same three enzyme species were present across all investigated life cycle stages.

    Conclusions:

    • The characterization of RNA polymerases in Allomyces arbuscula provides a baseline for further research.
    • The presence of consistent RNA polymerase species across developmental stages suggests they may not be the primary regulators of development in this fungus.

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