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Related Experiment Videos

Comparing two-dimensional electrophoretic gel images across the Internet

P F Lemkin1

  • 1Image Processing Section, National Institute of Health, Frederick, MD, USA. lemkin@ncifcrf.gov

Electrophoresis
|March 1, 1997
PubMed
Summary

A new program allows scientists to compare 2-D protein gel images from different labs over the internet. This tool aids in identifying protein spots by visually comparing remote and local gel data.

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Area of Science:

  • Proteomics
  • Bioinformatics
  • Computational Biology

Background:

  • Scientists globally analyze similar biological data, necessitating effective methods for result sharing and data comparison.
  • Two-dimensional (2-D) gel electrophoresis is a common technique for protein separation and analysis.
  • The increasing availability of 2-D gel data in online databases presents opportunities for remote data comparison.

Purpose of the Study:

  • To introduce a novel method for comparing 2-D protein gel images from different laboratories.
  • To facilitate protein spot identification by enabling visual comparison of gels.
  • To provide a practical solution for comparing local gel data with remote internet-accessible gel databases.

Main Methods:

  • Development of a distributed gel comparison program accessible via a Java-capable web browser.

Related Experiment Videos

  • Utilizing spatial warping and interactive landmarking to align gel images.
  • Implementing a 'flicker-comparison' technique where gel images are rapidly alternated in the same window for visual alignment.
  • Reading one gel image from an internet database and comparing it with a local gel image.

    • Main Results:

    • The developed program allows for interactive visual comparison of 2-D gel images from disparate sources.
    • Spatial warping and flickering enable precise alignment and identification of corresponding protein spots.
    • The method is efficient for single visual comparisons, avoiding the need for extensive database construction.

    Conclusions:

    • The flicker-comparison technique offers a practical and cost-effective approach for comparing 2-D protein gels.
    • This method enhances the ability to identify protein spots by leveraging remote internet databases.
    • The technique is adaptable for analyzing other types of one-dimensional and 2-D biomedical images.