{lambda} Protocols

Category: Viral Manipulation Protocols: Phage Lamda Manipulation Protocols

Removal of the 5'-phosphate groups from the internal termini of bacteriophage {lambda} arms is used to prevent self-ligation and suppress the background of nonrecombinant bacteriophages during cloning. - [Read Alkaline Phosphatase Treatment of Bacteriophage lambda Vector DNA Protocol]

Category: Reporter Gene Assays: B-Galactosidase Assay Protocols

This assay is used when working with phage vectors carrying the beta-gal gene. If the cloning event disrupts a normally functional copy of the gene in the vector the resulting plaques would appear clear in the assay. If the phages contain a functional beta-gal gene they will form blue rings around their plaques. Any strain which is not an overproducer of beta-gal will work as indicator host bacteria; a single chromosomal copy of the gene is not a problem. - [Read Assay for Phage Containing the Beta-galactosidase Gene]

Category: Yeast Protocols: Yeast Genetics Protocols: B-Galactosidase Assay Protocols

This assay is used when working with phage vectors carrying the beta-galactosidase gene (often used for immunological screening). If the cloning event disrupts a normally functional copy of the gene in the vector the resulting plaques would appear clear in the assay. If the phages contain a functional beta-galactosidase gene they will form blue rings around their plaques. Any strain which is not an overproducer of beta- galactosidase will work as indicator host bacteria. - [Read Assay for Phage Containing the Beta-galactosidase Gene Protocol]

Category: Viral Manipulation Protocols: Phage Lamda Manipulation Protocols

Protocol describes the DNA content of bacteriophage lambda stocks can be easily and rapidly estimated. - [Read Assaying the DNA Content of Bacteriophage lambda Stocks and Lysates by Gel Electrophoresis Protocol]

Category: Molecular Biology Protocols: Phage Protocols and Methods: Lambda Phage Protocols

Column Method for Mini-prep of lambda phage DNA purification from lysates. Donis Keller Lab - [Read Column Method for Lambda Phage DNA Preparation]

Category: Viral Culture and Isolation Protocols: Viral Culture Protocols

Mini-prep method for lambda phage DNA purification from lysates. - [Read Column Method for Lambda Phage DNA Preparation Protocol]

Category: Viral Manipulation Protocols: Phage Lamda Manipulation Protocols

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]

Category: E Coli Protocols: E coli Protein Protocols

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]

Category: Viral Manipulation Protocols: Phage Lamda Manipulation Protocols

Formamide can be used instead of proteinase K to dissociate bacteriophage {lambda} coat proteins from the viral {lambda}. The procedure is rapid and works best with large-scale preparations of bacteriophage {lambda}. - [Read Extraction of Bacteriophage lambda DNA from Large-scale Cultures Using Formamide Protocol]

Category: Viral Manipulation Protocols: Phage Lamda Manipulation Protocols

DNA is best isolated from bacteriophage lambda particles by digesting the viral coat proteins with a powerful protease such as proteinase K, followed by extraction with phenol:chloroform. This procedure is easily adapted for use with smaller-scale preparations of bacteriophage lambda. - [Read Extraction of Bacteriophage lambda DNA from Large-scale Cultures Using Proteinase K and SDS Protocol]

Category: Viral Culture and Isolation Protocols: Viral Culture Protocols

A crude lysate gel assay can be performed to roughly quantitate the DNA in lysates. This is often a valuable time saving step to determine if the phage yield is sufficient to warrant continuing the procedure. - [Read Gel Assay to Determine DNA Content of Phage Lysates Protocol]

Category: Viral Culture and Isolation Protocols: Viral Culture Protocols

There are essentially three parts to this protocol: 1. growth of at least 5x10e8 pfu phage to provide an inoculum growth of a larger liquid lysate that will produce about 5x10e12 pfu; 2. concentration and purification of the phage, and; 3. DNA preparation. - [Read Growth and Purification of 25-100 ug Lambda Clone DNA Protocol]

Category: RNA Protocols: cDNA Libraries Library

Adsroption of Anti-E. coli Antibodies, cDNA Library Screening, Frank Lab. Oklahoma Medical Research Foundation - [Read Immunoscreening of Lambda-GT11 Bacteriophage Libraries with Antibody Probes]

Category: Nucleic Acid Purification Protocols: DNA Isolation Protocols: DNA Isolation from Mammalian Cells Protocols

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]

Category: Viral Manipulation Protocols: Phage Lamda Manipulation Protocols

Protocol describes a plate method that gives very good yield for cloning. Includes: T-TYN Media + Mg+2; T-TYN Plates; T-TYN Top Agarose. - [Read Lambda DNA Preparation Protocol]

Category: Nucleic Acid Purification Protocols: DNA Isolation Protocols

Protocol for lambda DNA preparation. This is a plate method that gives very good yield for cloning. - [Read Lambda DNA Preparation Protocol]

Category: Viral Manipulation Protocols: Phage Lamda Manipulation Protocols

Protocol for lambda gt22a screening. Includes: T-TYN Media + Mg+2; T-TYN Plates; T-TYN Top Agarose; Phage Dilution Buffer (PDB); 10X Kinase Buffer (-DTT); Calf Thymus DNA. - [Read Lambda gt22a Screening Protocol]

Category: DNA Protocols: cDNA Library Protocols: cDNA Library Construction Protocols

Information on lambda methods media and solutions. - [Read Lambda Methods Media and Solutions]

Category: Viral Culture and Isolation Protocols: Viral Culture Protocols

Protocol for lambda methods media and solutions. - [Read Lambda Methods Media and Solutions Protocol]

Category: Molecular Biology Protocols: Phage Protocols and Methods

Lambda Phage DNA Quickprep with recipes for PSB, STE, l-dil and MgCa buffers and media. Kay Schneitz - [Read Lambda Phage DNA Quickprep]

Category: Molecular Biology Protocols: Phage Protocols and Methods: Lambda Phage Protocols

Phage Protocols - Lambda plate lysis. Rob Philip Group. - [Read Lambda plate lysis Protocol]

Category: Viral Manipulation Protocols: Phage Lamda Manipulation Protocols

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]

Category: DNA Protocols: cDNA Library Protocols

The final stage of cDNA library construction involves optimizing ligation of the size-fractionated cDNA to bacteriophage {lambda} arms, followed by packaging and plating of the recombinant bacteriophages. - [Read Ligation of cDNA to Bacteriophage lambda Arms for the Construction of cDNA Libraries]

Category: Viral Culture and Isolation Protocols: Viral Culture Protocols

5 ml liquid lysates are prepared when a small amount of DNA from a large number of lambda clones is needed. The lysates can be made using 10- 20 ul of a stock lysate or a 100-fold amplified phage "macroplaque" as the inoculum. - [Read Liquid Phage Lysates Protocol]

Category: Cell Culture Protocols: Cell Storing and Cell Freezing Protocols

No special treatment is required to prepare a lysate for the active collection. The following procedure should be used for long-term storage of lambda clones in the archival collections. The phage are diluted in media containing 7% DMSO and frozen at -80 degrees C. - [Read Long Term Lambda Phage Storage Protocol]