Lambda Dna
Lambda Dna - Related Videos
06:10
Following Cell-fate in E. coli After Infection by Phage Lambda
0 Views •
Cited by 20 •
2011
This article describes the procedure for preparing a fluorescently-labeled version of bacteriophage lambda, infection of E. coli bacteria, following the infection outcome under the microscope, and analysis of infection results.
07:08
The Lambda Select cII Mutation Detection System
0 Views •
Cited by 3 •
2018
We describe a detailed protocol for the Lambda Select cII mutation assay in cultured cells of transgenic rodents or the corresponding animals treated with a chemical/physical agent of interest. This approach has been widely used for mutagenicity testing of carcinogens in mammalian cells.
17:03
Direct Observation of Enzymes Replicating DNA Using a Single-molecule DNA Stretching Assay
0 Views •
Cited by 13 •
2010
We describe a method for observing real time replication of individual DNA molecules mediated by proteins of the bacteriophage replication system.
13:24
DNA Isolation and Restriction Enzyme Analysis - Student Protocol
0 Views •
2019
DNA Isolation ExpandNOTE: In this experiment you will perform DNA isolation under two experimental conditions: one using a buffer containing the detergent SDS and one without detergent. Hypotheses: The alternate hypothesis for this experiment might be that the sample prepared without SDS, a strong anionic detergent that breaks apart cell membranes, will yield less DNA than the sample prepared with SDS. The null hypothesis for this experiment might be that both samples will yield an equal amount...
12:45
Preparation of Viral DNA from Nucleocapsids
0 Views •
Cited by 40 •
2011
We describe the process of isolating high purity herpesvirus nucleocapsid DNA from infected cells. The final DNA captured from solution is of high concentration and purity, making it ideally suited for high-throughput sequencing, high fidelity PCR reactions, and transfections to produce new viral recombinants.
FAQs
The genome is packaged linearly but carries complementary cohesive ends. After the DNA enters an Escherichia coli cell, these matching ends can pair, allowing the molecule to circularize. This change in physical form is important because the circular genome can then participate in the alternative developmental outcomes associated with lambda infection.
After entering the bacterial cell, lambda DNA can proceed along one of two developmental pathways. The lytic pathway leads to production of new phage particles, whereas lysogeny places the phage genome into the host chromosome. Comparing these outcomes makes lambda DNA useful for examining how genetic regulation influences alternative biological programs.
Lambda DNA provides a defined viral genome in which researchers can examine how genetic information is arranged and regulated. Its ability to produce new phage particles or persist through integration creates contrasting biological states for study. These features make it a classic system for connecting genome organization with changes in gene activity.
Studies with lambda DNA can focus on how genetic material is rearranged through recombination and how a phage genome interacts with its bacterial host. Because the genome can either support phage production or integrate into the host chromosome, experiments can relate DNA behavior to both genetic exchange and infection outcomes.
Lambda DNA serves as a genomic molecule for restriction-enzyme mapping, an approach used to examine the organization of DNA. Researchers analyze how restriction enzymes divide the genome into fragments and use the resulting pattern to characterize its arrangement. This application connects a defined phage genome with practical analysis of DNA structure.
Lambda DNA is used in cloning strategies because it provides a well-studied phage genome whose organization and behavior have been extensively examined. Its use allows researchers to investigate how DNA can be arranged and handled in experimental systems while drawing on principles of genome organization, recombination, and host interaction.