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Related Concept Videos

Western Blotting01:15

Western Blotting

Western blotting is an analytical technique for protein identification. It has various applications in immunology and medicine, including detecting diseases like bovine spongiform encephalopathy, mad cow disease, and human and feline immunodeficiency virus from biological samples.
The technique begins with separating proteins from the sample using sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), followed by protein transfer, immunoblotting, and finally, protein detection.

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Related Experiment Video

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The MultiBac Protein Complex Production Platform at the EMBL
13:51

The MultiBac Protein Complex Production Platform at the EMBL

Published on: July 11, 2013

A multiway analysis for identifying high integrity bovine BACs.

Abhirami Ratnakumar1, Wesley Barris, Sean McWilliam

  • 1CSIRO Livestock Industries, 306 Carmody Road, St. Lucia, QLD 4067, Australia. abhirami.ratnakumar@y7mail.com

BMC Genomics
|January 27, 2009
PubMed
Summary

This study developed a method to verify bacterial artificial chromosome (BAC) integrity in large genomics projects. It ensures high-quality BACs for future research by identifying and resolving inconsistencies across multiple analyses.

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Area of Science:

  • Genomics
  • Bioinformatics
  • Molecular Biology

Background:

  • Large-scale genomics projects utilize bacterial artificial chromosomes (BACs) for various analyses.
  • Potential for BAC identity confusion exists across fingerprinting, end sequencing (BES), and full sequencing.

Purpose of the Study:

  • To develop a methodology for assessing and ensuring the integrity of BAC datasets.
  • To identify and resolve inconsistencies in BAC identities arising from different analytical methods.

Main Methods:

  • Comparative analysis of BAC locations using fingerprint maps, BAC end sequences (BESs), and full BAC sequences.
  • Identification of inconsistencies between different datasets to flag potential misidentifications or library issues.

Main Results:

  • Approximately 95% of analyzed bovine CHORI-240 library BACs with fingerprint and BES data showed consistent genome mapping.
  • Identified systematic issues in end sequencing for 31 plates and potential duplicate BACs in the CHORI-240 library.
  • Developed a robust method applicable even with incomplete genomic sequence data.

Conclusions:

  • The developed methodology effectively verifies BAC dataset integrity.
  • A significant majority of BACs in the CHORI-240 library demonstrate high integrity when cross-validated.
  • The approach is crucial for selecting reliable BACs for subsequent genomic research.