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Effect of phenethyl alcohol on deoxyribonucleic acid-membrane association in Escherichia coli

W E Masker, H Eberle

    Journal of Bacteriology
    |March 1, 1972
    PubMed

    Insights

    Phenethyl alcohol (PEA) at high concentrations releases DNA from cell membranes, impacting DNA replication. Lower PEA concentrations, while preventing DNA replication reinitiation, did not significantly detach DNA.

    Area of Science:

    • Molecular Biology
    • Cell Biology
    • Biochemistry

    Background:

    • Deoxyribonucleic acid (DNA) replication is a fundamental cellular process.
    • DNA-membrane attachment plays a role in DNA replication regulation.
    • Phenethyl alcohol (PEA) is known to affect DNA replication.

    Purpose of the Study:

    • To investigate the effect of phenethyl alcohol (PEA) on the attachment of deoxyribonucleic acid (DNA) to cell membranes.
    • To determine if PEA disrupts the DNA-membrane complex.

    Main Methods:

    • Utilized the "M-band" technique developed by Tremblay, Daniels, and Schaechter.
    • Examined the association of DNA with cellular membranes after PEA treatment.

    Main Results:

    • No significant release of DNA from membranes was observed at 0.25% PEA.
    • Concentrations of 0.5% PEA and higher caused a release of 25-80% of DNA from the membrane.
    • Higher PEA concentrations, which immediately halt DNA replication, also disrupt DNA-membrane attachment.

    Conclusions:

    • Phenethyl alcohol (PEA) at concentrations of 0.5% and above disrupts the DNA-membrane complex.
    • The disruption of DNA-membrane attachment by higher PEA concentrations may contribute to the immediate cessation of DNA replication.

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