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Plating and transferring bacteriophage libraries.

T Quertermous1

  • 1Massachusetts General Hospital, Boston, Massachusetts, USA.

Current Protocols in Molecular Biology
|February 12, 2008
PubMed
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This protocol enables efficient screening of recombinant phage libraries by replicating phage plaques onto filters. This allows for the identification and recovery of specific DNA sequences from large phage collections.

Area of Science:

  • Molecular Biology
  • Genetics
  • Biotechnology

Background:

  • Screening large recombinant phage libraries is crucial for identifying clones with specific DNA sequences.
  • Existing methods may lack efficiency in handling large phage populations.

Purpose of the Study:

  • To present a robust protocol for screening recombinant phage libraries.
  • To enable the identification of specific DNA sequences within large phage collections.

Main Methods:

  • Phage multiplication in host bacteria within an agarose layer on bacterial plates.
  • Adsorption of phage particles and DNA to nitrocellulose filters applied to the agarose.
  • Phage particle destruction and DNA denaturation using sodium hydroxide, followed by DNA binding to the filter.
  • Neutralization of filters to preserve nitrocellulose integrity.

Related Experiment Videos

  • Hybridization with DNA or RNA probes to locate target phage plaques.

    • Main Results:

    • A replica of the phage plate surface is generated on the nitrocellulose filter.
    • Phage DNA is denatured and immobilized on the filter for hybridization.
    • Specific phage plaques of interest can be accurately identified and located.
    • Identified phage plaques can be recovered from the original bacterial plate.

    Conclusions:

    • The presented protocol offers an effective method for screening recombinant phage libraries.
    • This technique facilitates the identification and isolation of desired DNA sequences from extensive phage collections.