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Related Concept Videos

DNA Microarrays02:34

DNA Microarrays

Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...

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DNA Microarrays: Sample Quality Control, Array Hybridization and Scanning
09:27

DNA Microarrays: Sample Quality Control, Array Hybridization and Scanning

Published on: March 15, 2011

Accuracy and reproducibility of protein-DNA microarray technology.

Simon Field1, Irina Udalova, Jiannis Ragoussis

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

Advances in Biochemical Engineering/Biotechnology
|February 13, 2007
PubMed
Summary

Protein-DNA microarrays offer high-throughput analysis of protein-DNA interactions. These methods enable relative binding affinities to be calculated by detecting protein binding to synthesized DNA sequences on chips.

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DNA Microarrays: Sample Quality Control, Array Hybridization and Scanning
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Published on: March 15, 2011

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07:04

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A High-throughput Cell Microarray Platform for Correlative Analysis of Cell Differentiation and Traction Forces
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Area of Science:

  • Molecular Biology
  • Biotechnology
  • Genomics

Background:

  • High-throughput technologies are crucial for studying protein-DNA interactions.
  • Microarray-based methods have emerged in the last six years to meet this need.

Purpose of the Study:

  • To describe microarray-based methods for analyzing protein-DNA interactions.
  • To highlight the principles and key factors for accurate quantification.

Main Methods:

  • Utilizing protein-DNA microarrays with printed or synthesized DNA sequences.
  • Interrogating DNA-binding proteins using purified samples or cellular extracts.
  • Employing labeled molecules for specific protein detection and signal quantification.

Main Results:

  • The signal intensity is proportional to the bound DNA-binding protein levels.
  • Relative affinities of protein-DNA interactions can be calculated.
  • Identified key factors for reproducible and accurate quantification.

Conclusions:

  • Protein-DNA microarrays provide a powerful high-throughput approach for studying protein-DNA interactions.
  • Reproducibility and accuracy depend on factors like surface chemistry, oligonucleotide properties, protein quality, and hybridization conditions.