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Related Experiment Videos

Quantitative high-throughput analysis of transcription factor binding specificities.

Jane Linnell1, Richard Mott, Simon Field

  • 1Wellcome Trust Centre for Human Genetics, University of Oxford, 7 Roosevelt Drive, Oxford OX3 7BN, UK.

Nucleic Acids Research
|March 3, 2004
PubMed
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We developed a high-throughput method to quantify DNA-protein interactions, aiding the discovery of functional genetic variations. This approach accurately predicts how genetic changes affect transcription factor binding affinity.

Area of Science:

  • Molecular Biology
  • Genetics
  • Bioinformatics

Background:

  • Accurate quantification of DNA-protein interactions is crucial for understanding gene regulation.
  • Identifying functional genetic polymorphisms requires precise assessment of their impact on protein binding.
  • Existing methods may lack the throughput or accuracy needed for comprehensive analysis.

Purpose of the Study:

  • To present a general high-throughput approach for quantifying DNA-protein interactions.
  • To facilitate the identification of functional genetic polymorphisms by predicting their effects on binding.
  • To demonstrate the method's efficacy using transcription factors NF-kappaB and OCT-1.

Main Methods:

  • Optimized selection of DNA variants for experimental testing, outperforming random selection.

Related Experiment Videos

  • Quantitative protein-DNA binding assays utilizing microarray and surface plasmon resonance (SPR).
  • Statistical modeling based on principal coordinates analysis for predicting binding affinity across all DNA variants.

    • Main Results:

    • A novel polyacrylamide/ester glass activation chemistry was identified, ensuring exclusive covalent DNA attachment and preventing non-specific binding.
    • High correlation (93%) between the developed assay and the electromobility shift assay (EMSA) confirmed DNA duplex accessibility.
    • New DNA binding data for the transcription factor OCT-1 were generated.

    Conclusions:

    • The presented high-throughput approach enables accurate quantification of DNA-protein interactions.
    • This method can effectively predict the impact of single nucleotide polymorphisms (SNPs) on transcription factor binding affinity.
    • The approach has the potential to significantly advance the study of gene regulation and genetic variation.