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Morphology of complexes formed between bacteriophage lambda and structures containing the lambda receptor.

C A Roessner, D K Struck, G M Ihler

    Journal of Bacteriology
    |March 1, 1983
    PubMed
    Summary
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    Bacteriophage lambda forms two types of complexes with receptor-bearing structures. Type 1 involves tail fiber binding, while Type 2 involves direct tail contact, which is essential for DNA ejection.

    Area of Science:

    • Molecular biology
    • Virology
    • Biophysics

    Background:

    • Bacteriophage lambda is a virus that infects bacteria.
    • Bacteriophage lambda utilizes specific receptors on host cells for entry.
    • Understanding phage-host interactions is crucial for viral dynamics.

    Purpose of the Study:

    • To characterize the distinct binding modes between bacteriophage lambda and receptor-bearing structures.
    • To elucidate the structural requirements for bacteriophage lambda DNA ejection.

    Main Methods:

    • Analysis of bacteriophage lambda complex formation with liposomes and rod-shaped particles.
    • Microscopy or biophysical techniques to determine complex structures and distances.

    Main Results:

    Related Experiment Videos

    • Two types of bacteriophage lambda complexes were identified: Type 1 and Type 2.
    • Type 1 complexes feature binding at the tail fiber tip, with the tail ~17 nm from the receptor.
    • Type 2 complexes involve direct contact between the phage tail and the receptor-bearing structure.

    Conclusions:

    • Type 1 complexes serve as precursors to Type 2 complexes.
    • Formation of Type 2 complexes is a prerequisite for successful bacteriophage lambda DNA ejection.