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Updated: Apr 15, 2026

Deep Proteome Profiling by Isobaric Labeling, Extensive Liquid Chromatography, Mass Spectrometry, and Software-assisted Quantification
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Dynamic range compression with ProteoMiner™: principles and examples.

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Summary

Detecting low-abundance proteins is challenging. ProteoMiner, using hexapeptide bead libraries, enriches rare proteins by compressing the abundance range, aiding proteomics investigation and biomarker research.

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Area of Science:

  • Proteomics
  • Biotechnology
  • Analytical Chemistry

Background:

  • Efficiently enriching low-abundance proteins is crucial for proteomics, biomarker discovery, and purity analysis.
  • High-abundance proteins often mask the detection of rare proteins in biological samples.
  • Current methods face challenges in sample preparation for detecting trace proteins.

Purpose of the Study:

  • To describe optimized protocols for the ProteoMiner method.
  • To highlight the successful application of ProteoMiner in protein identification and analysis.
  • To demonstrate the utility of combinatorial peptide ligand libraries for low-abundance protein enrichment.

Main Methods:

  • Utilized solid-phase combinatorial peptide ligand libraries (ProteoMiner).
  • Employed a hexapeptide bead library with high diversity for protein binding.
  • Applied the method to biological samples to enrich low-abundance proteins.

Main Results:

  • Successfully compressed the protein abundance range in biological samples.
  • Enabled the enrichment and detection of previously undetectable low-abundance proteins.
  • Demonstrated effective protein identification and analysis post-enrichment.

Conclusions:

  • ProteoMiner is an effective method for enriching low-abundance proteins.
  • Optimized protocols enhance the application of ProteoMiner in proteomics research.
  • This technique significantly improves the analysis of complex biological samples.