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Human liver protein map: a reference database established by microsequencing and gel comparison.

D F Hochstrasser1, S Frutiger, N Paquet

  • 1Medicine Department, Geneva University, Switzerland.

Electrophoresis
|December 1, 1992
PubMed
Summary
This summary is machine-generated.

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This study presents a reference human liver protein map, identifying 42 polypeptide chains and 8 additional proteins. This comprehensive database aids in analyzing protein expression in various biological samples, including rectal cancer biopsies.

Area of Science:

  • Proteomics
  • Human Liver Biology
  • Biochemical Analysis

Background:

  • Establishing a comprehensive human liver proteome is crucial for understanding liver function and disease.
  • Existing protein maps lack detailed characterization for comparative analysis.

Purpose of the Study:

  • To create a reference two-dimensional gel electrophoresis (2D-PAGE) protein map for the human liver.
  • To identify and catalog human liver proteins for use as a diagnostic and research database.

Main Methods:

  • Utilized immobilized pH gradients (IPG) for high-resolution 2D-PAGE of human liver proteins.
  • Employed microsequencing to identify polypeptide chains from protein spots.
  • Performed comparative analysis with red blood cell and plasma protein maps to identify additional proteins.

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Main Results:

  • Successfully generated a reference human liver protein map.
  • Identified 57 protein spots corresponding to 42 distinct polypeptide chains.
  • Identified an additional 8 proteins through cross-referencing with other biological sample maps.
  • Created a database of identified liver proteins, labeled on the reference map.

Conclusions:

  • The established human liver protein map serves as a valuable reference database.
  • This resource facilitates the identification of protein expression changes in various biological samples.
  • The map is applicable for analyzing protein profiles in clinical samples, such as rectal cancer biopsies.