Protocol describes three standard methods to construct bacteriophage M13 recombinants: (1) ligating insert DNA to a linearized vector, prepared by cleavage of M13 RF with a single restriction enzyme; (2) using alkaline phosphatase to suppress self-ligation of the linearized vector, and (3) using M13 RF cleaved with two restriction enzymes for directional cloning. - [Read Cloning into Bacteriophage M13 Vectors Protocol]
Protocol describes how (1) to clone cloned sequences encoding open reading frames in plasmids carrying bacteriophage {lambda} pL promoters, (2) to optimize expression of target proteins in transformants carrying these recombinants, and (3) to scale-up production of foreign proteins. - [Read Expression of Cloned Genes in E. coli Using the Bacteriophage lambda pL Promoter Protocol]
Protocol for expression of cloned genes in E. coli using the bacteriophage lambda pL promoter. Protocol describes how (1) to clone cloned sequences encoding open reading frames in plasmids carrying bacteriophage lambda pL promoters, (2) to optimize expression of target proteins in transformants carrying these recombinants, and (3) to scale-up production of foreign proteins. - [Read Expression of Cloned Genes in E. coli Using the Bacteriophage lambda pL Promoter Protocol]
Protocol for the expression of cloned genes in E. coli using the bacteriophage T7 promoter. Protocol describes how (1) to clone cloned sequences encoding open reading frames in plasmids carrying bacteriophage T7 promoters, (2) to optimize expression of target proteins in transformants carrying these recombinants, and (3) to scale-up production of foreign proteins. - [Read Expression of Cloned Genes in E. coli Using the Bacteriophage T7 Promoter Protocol]
Shotgun sequencing of a large segment of DNA involves random fragmentation of the target region into smaller segments that are subsequently cloned into a bacteriophage M13 vector. The goal is to create a library of overlapping clones that provide at least fivefold coverage over the entire length of the target fragment. - [Read Generation of a Library of Randomly Overlapping DNA Inserts Protocol]
The double-stranded DNA of recombinant plasmid, phagemid, or bacteriophage M13 replicative form DNA is digested with two restriction enzymes whose sites of cleavage both lie between one end of the target DNA and the binding site for universal primer. The enzyme that cleaves nearer the target sequence must generate either a blunt end or a recessed 3' terminus; the other enzyme must generate a four-nucleotide protruding 3' terminus. - [Read Generation of Sets of Nested Deletion Mutants with Exonuclease III Protocol]
Most manipulations with M13, including preparations of viral stocks and isolation of single- and double-stranded DNAs, begin with small-scale liquid cultures that are infected with an M13 plaque, picked from an agar plate. - [Read Growing Bacteriophage M13 in Liquid Culture Protocol]
Using hybridization, it is possible to identify a single recombinant that carries the desired target sequence on a filter that carries the imprint of 15,000 or more plaques. - [Read Hybridization of Bacteriophage DNA on Filters Protocol]
Protocol describes how to identify cloned cDNAs encoding proteins that bind to specific DNA sequences. The methods used are very similar to those used for immunological screening of expression libraries except that the nitrocellulose filters carrying immobilized proteins are screened with 32P-labeled double-stranded DNA rather than with antibodies. - [Read Identifying DNA-binding Proteins in Bacteriophage ambda Expression Libraries Protocol]
Method of choice when large amounts of mammalian DNA are required, for example, for Southern blotting (Rapid Isolation of Mammalian DNA, Rapid Isolation of Yeast DNA, Southern Blotting: Capillary Transfer of DNA to Membranes) or for construction of genomic libraries in bacteriophage {lambda} vectors. Approximately 200 µg of mammalian DNA, 100-150 kb in length, is obtained from 5 x 107 cultured aneuploid mammalian cells (e.g., HeLa cells). - [Read Isolation of High-molecular-weight DNA from Mammalian Cells Using Proteinase K and Phenol Protocol]
Protocol used chiefly to generate large stocks of double-stranded DNA of strains of M13 that are routinely used as cloning vectors. Large amounts of single-stranded DNA of an individual recombinant may occasionally be needed for specific purposes, e.g., to generate many preparations of a particular radiolabeled probe or to construct large numbers of site-directed mutants. - [Read Large-scale Preparation of Single-stranded and Double-stranded Bacteriophage M13 DNA Protocol]
Pilot ligations and packaging reactions are used to establish the amounts of fragmented genomic DNA and bacteriophage {lambda} arms that yield the maximum number of recombinants. Additional ligation and packaging reactions may then be set up to yield a comprehensive library of genomic DNA. - [Read Ligation of Bacteriophage lambda Arms to Fragments of Foreign Genomic DNA Protocol]
Protocol fopr markers of pulsed-field gel electrophoresis. Markers for pulsed-field gel electrophorsis can be generated by ligation of linear monomers of bacteriophage {lambda} DNA (48.5 kb) into a nested series of concatemers. This procedure yields a series of concatemers that contain up to 20 tandemly arranged copies of bacteriophage DNA. - [Read Markers for Pulsed-field Gel Electrophoresis Protocol]
Ph.D. Peptide Display Cloning System - NEB. The Ph.D.â„¢ Peptide Display Cloning System facilitates the display of custom peptide libraries on the surface of bacteriophage M13 as coat protein fusions, creating a physical linkage between each displayed pep - [Read Ph.D. Peptide Display Cloning System - NEB]
A Single Stranded Plasmid DNA Isolation Protocol describing the production and isolation of single-stranded DNA (ssDNA) using bacteriophagemid-containing bacteria and helper phage. Infection of the host cells with helper phage allows for packaging of ssDNA into bacteriophage. The ssDNA can then be isolated from phage particles.
A protocol for the selection of Phage Antibodies using Immobilized Antigen. This method describes the selection of antibodies from bacteriophage antibody libraries that recognize a specific antigen. The phage display library of antibody-displaying phage particles is exposed to antigen attached to a solid substrate (Nunc Immuno™ tubes). The phage particles with affinity for antigen bind to the immobilized antigen and are selected from the library of phage expressing antibodies.