Dna Bait Strains
Dna Bait Strains - Related Videos
12:36
A Protocol for Phage Display and Affinity Selection Using Recombinant Protein Baits
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Cited by 3 •
2014
Phage display is a powerful technique to capture proteins or protein moieties that interact with an immobilized molecule of interest. Once a decision of the type of phage cDNA library to create and screen has been made, the protocol described here permits efficient affinity selection leading to identification of interactors.
03:55
ELISA-Based Method to Analyze Interactions between Bait and Prey Proteins
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2025
This video describes an ELISA-based technique that detects protein-protein interactions between two proteins by measuring the binding of the second protein to the immobilized first protein. The bound second protein is detected using specific antibodies labeled with an enzyme, such as horseradish peroxidase.
09:39
DNA Fingerprinting of Mycobacterium leprae Strains Using Variable Number Tandem Repeat (VNTR) - Fragment Length Analysis (FLA)
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Cited by 9 •
2011
Leprosy, caused by Mycobacterium leprae, is still endemic in many places. In order to learn about the spread and mode of transmission of leprosy, it is important to determine which strain of M. leprae has infected a patient. Variable numbers of tandem repeats (VNTR) typing is one such method.
02:58
Measurement of Compressive Stress-Strain Response at Small-Strains
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2025
This protocol presents the configuration of a compression test device capable of precisely measuring the mechanical properties of microstructures in the small-strain region, along with a systematic method for compression testing using this device. The proposed device can be used to analyze various microstructures and the mechanical behavior of polymer-based materials.
14:49
Associated Chromosome Trap for Identifying Long-range DNA Interactions
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Cited by 4 •
2011
The associated chromosome trap (ACT) assay is a novel unbiased method for identifying long-range DNA interactions. The characterization of long range DNA interactions will allow us to determine the relationship of nuclear architecture to gene expression in both normal physiology and in diseased states.
FAQs
The bait sequence is positioned upstream of a reporter gene, creating a regulatory test region inside the host cell. When a candidate regulatory protein binds that sequence, its attached transcriptional activation domain is brought near the reporter machinery. This recruitment activates reporter expression, allowing binding to be assessed through a measurable signal under selective conditions.
Positioning the bait upstream of the reporter gene connects DNA recognition with transcriptional output. The arrangement ensures that binding by a candidate protein can recruit its activation domain to a location where reporter expression is affected. Consequently, the assay links a molecular interaction at a defined regulatory sequence to an observable genetic readout.
The activation domain provides the signal-generating function, rather than determining which DNA sequence is recognized. A candidate regulatory protein supplies the DNA-binding activity, while fusion to the activation domain allows binding to recruit transcriptional machinery near the reporter gene. This separation makes it possible to test candidate proteins for interaction with the selected bait sequence.
A defined DNA sequence is incorporated into a host strain upstream of a reporter gene. Candidate regulatory proteins are then produced as fusions with a transcriptional activation domain. The resulting system is maintained under selective conditions, and reporter output is examined. A detectable signal indicates that the candidate protein has engaged the bait-linked regulatory arrangement.
Reporter output provides evidence that a candidate protein interacts with the selected DNA sequence in the engineered host context. Researchers can use that result to identify potential DNA-binding proteins and to characterize regulatory interactions involving transcription factors. The readout therefore connects a molecular binding event with functional activity at a defined regulatory region.
In genetics, these strains support analysis of how regulatory proteins recognize promoter or other defined DNA sequences. They can help investigate promoter function, transcription-factor interactions, and the genetic control of cellular processes. Because the assay produces a reporter-based outcome, it provides a practical way to study sequence-specific regulation within a cellular system.