Protein Dna Analysis
Protein Dna Analysis - Related Videos
08:53
Strand-Specific Analysis of Proteins at Replicating DNA Strands by Enrichment and Sequencing of Protein-Associated Nascent DNA Method
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2025
Enrichment and sequencing of protein-associated nascent DNA (eSPAN) was developed to detect the relative abundance of a chromatin-associated protein on two replicating DNA strands, thereby revealing molecular insight into chromatin replication and its coupled processes. This protocol describes eSPAN procedures in yeast and mouse embryonic stem (ES) cells.
03:06
From DNA to Protein
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2020
The flow of genetic information in cells from DNA to mRNA to protein is described by the central dogma, which states that genes specify the sequence of mRNAs, which in turn specify the sequence of amino acids making up all proteins. The decoding of one molecule to another is performed by specific proteins and RNAs. Because the information stored in DNA is so central to cellular function, it makes intuitive sense that the cell would make mRNA copies of this information for protein synthesis...
08:47
DNA Methylation Analysis
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2023
Methylation at CpG dinucleotides is a chemical modification of DNA hypothesized to play important roles in regulating gene expression. In particular, the methylation of clusters of methylation sites, called “CpG islands”, near promoters and other gene regulatory elements may contribute to the stable silencing of genes, for example, during epigenetic processes such as genomic imprinting and X-chromosome inactivation. At the same time, aberrant CpG methylation has been shown to be associated with...
05:13
Isolation of Proteins from Viral DNA-protein Complexes
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2026
Source: Dembowski, J. A., et al. Purification of Viral DNA for the Identification of Associated Viral and Cellular Proteins. J. Vis. Exp. (2017).This video demonstrates the isolation of protein–viral DNA complexes from cell nuclei using click chemistry and magnetic bead purification. The protocol involves labeling viral genomes with alkyne-modified nucleotides, biotinylation via a click reaction, and binding to streptavidin-coated magnetic beads. Following washing and heat elution, the purified...
08:51
Visualization of Surface-tethered Large DNA Molecules with a Fluorescent Protein DNA Binding Peptide
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Cited by 7 •
2016
We present an approach for visualizing fluorescent protein DNA binding peptide (FP-DBP)-stained large DNA molecules tethered on the polyethylene glycol (PEG) and avidin-coated glass surface and stretched with microfluidic shear flows.
FAQs
It examines whether particular proteins recognize, bind, or modify specific DNA sequences. These interactions can indicate how regulatory information is interpreted and how genome function is controlled. In developmental systems, such evidence helps connect molecular binding events with changes in gene expression that support distinct cell fates, tissue formation, or developmental timing.
Transcription factors can identify regulatory elements that influence developmental gene programs, while chromatin-associated proteins provide information about regulatory control linked to genome organization. Examining these protein-DNA relationships helps researchers determine which molecular interactions participate in cell-fate decisions, tissue development, and the timing of developmental transitions.
Electrophoretic mobility shift assays, DNA footprinting, affinity capture, and chromatin immunoprecipitation provide complementary ways to study protein-DNA interactions. Some approaches examine an isolated DNA sequence or protein, whereas chromatin immunoprecipitation addresses chromatin-associated interactions. Choosing among them depends on whether the investigation focuses on binding, sequence association, or chromatin context.
A typical workflow begins by selecting the DNA sequence, protein, or chromatin-associated target relevant to the biological question. Researchers then choose an interaction assay, such as an electrophoretic mobility shift assay, DNA footprinting, affinity capture, or chromatin immunoprecipitation, and measure the resulting association to identify regulatory relationships.
The results can help identify transcription factors, regulatory elements, and chromatin-associated proteins linked to developmental programs. By mapping these interactions, researchers can relate specific protein-DNA associations to cell fate, tissue formation, and developmental timing. The findings clarify how altered gene regulation may produce different developmental outcomes.
It is useful when a developmental disorder may arise from disrupted regulation rather than from changes in a protein's general presence alone. Mapping protein-DNA interactions can reveal affected regulatory elements or chromatin-associated mechanisms and connect those molecular changes with abnormal cell-fate decisions, tissue formation, or developmental timing.