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Related Experiment Videos

Incomplete lambda bacteriophage heads produced by a gene F mutant.

V C Bode

    Journal of Virology
    |September 1, 1971
    PubMed
    Summary

    A defective bacteriophage lambda head assembly can be repaired using a factor found in lysates of other mutant strains. This finding aids in understanding phage assembly and potential genetic repair mechanisms.

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    Area of Science:

    • Molecular Biology
    • Virology
    • Genetics

    Background:

    • Bacteriophage lambda assembly is a complex process involving multiple protein components.
    • Specific mutations can lead to defective head subassemblies, hindering viral replication.
    • Understanding these assembly defects is crucial for phage biology.

    Purpose of the Study:

    • To investigate the cause of defective head subassembly in lambda susF423 mutants.
    • To identify factors capable of restoring function to the defective head subassembly.
    • To elucidate mechanisms of bacteriophage assembly and complementation.

    Main Methods:

    • Culturing of lambda susF423 mutants in nonpermissive host cells.
    • Preparation of cell lysates from various lambda mutant strains.
    • Complementation assays using mutant lysates to assess head subassembly function.

    Main Results:

    • A defective head subassembly was observed in lambda susF423 grown in nonpermissive conditions.
    • A functional factor present in lysates of other lambda mutants was identified.
    • This factor successfully restored functionality to the defective head subassembly.

    Conclusions:

    • The study identified a trans-acting factor that complements defective lambda head assembly.
    • This factor likely participates in the late stages of bacteriophage lambda head formation.
    • The findings provide insights into the molecular mechanisms governing viral morphogenesis and genetic complementation.

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