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Proteomics

Proteomics

A proteome is the entire set of proteins that a cell type produces. We can study proteomes using the knowledge of genomes because genes code for mRNAs, and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated into proteins.
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term proteomics...

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Related Experiment Video

Updated: Jun 7, 2026

Fast Enzymatic Processing of Proteins for MS Detection with a Flow-through Microreactor

Fast Enzymatic Processing of Proteins for MS Detection with a Flow-through Microreactor

Published on: April 6, 2016

Improved particle-packed HPLC/MS microchips for proteomic analysis.

Maria Trusch¹, Steffen Ehlert, Andreas Bertsch

¹Department of Clinical Chemistry, University Medical Center Hamburg - Eppendorf, Hamburg, Germany.

Journal of Separation Science

|November 5, 2010

Summary

This summary is machine-generated.

Optimizing high-performance liquid chromatography/mass spectrometry (HPLC/MS) chip packing improves reproducibility and detection limits for proteomic analysis. Smaller particle sizes and better packing enhance peak intensity and protein identification in complex samples.

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Last Updated: Jun 7, 2026

Fast Enzymatic Processing of Proteins for MS Detection with a Flow-through Microreactor

Fast Enzymatic Processing of Proteins for MS Detection with a Flow-through Microreactor

Published on: April 6, 2016

An HS-MRM Assay for the Quantification of Host-cell Proteins in Protein Biopharmaceuticals by Liquid Chromatography Ion Mobility QTOF Mass Spectrometry

An HS-MRM Assay for the Quantification of Host-cell Proteins in Protein Biopharmaceuticals by Liquid Chromatography Ion Mobility QTOF Mass Spectrometry

Published on: April 17, 2018

Area of Science:

Analytical Chemistry
Proteomics
Chromatography

Background:

High-performance liquid chromatography/mass spectrometry (HPLC/MS) is crucial for proteomic analysis.
Optimizing chip-based separations is essential for improving sensitivity and identification depth.
Packing parameters significantly affect chromatographic performance.

Purpose of the Study:

To investigate the impact of packing parameters (pressure, ultrasound) and particle size on HPLC/MS chip performance for proteomic samples.
To evaluate the reproducibility and detection limits of separations using different packing conditions.
To assess the effect of packing quality on protein identification in complex biological samples.

Main Methods:

Systematic investigation of packing pressure and ultrasound application during chip packing.
Evaluation of stationary phase particle sizes (3.5 and 5 μm).
Chromatographic separation and mass spectrometry analysis of tryptic BSA peptides and human plasma protein fraction (Cohn fraction IV-4).

Main Results:

All HPLC/MS chips demonstrated highly reproducible separations.
Improved packing conditions and smaller particle sizes led to narrower peaks and higher signal intensities.
Enhanced separation performance increased peak capacity, peptide identification, and sequence coverage, especially for low sample amounts.

Conclusions:

Packing process parameters and stationary phase particle size critically influence HPLC/MS chip performance in proteomics.
Optimized packing strategies enhance the sensitivity and depth of proteomic analyses.
This work provides a foundation for developing more efficient and sensitive chip-based proteomic workflows.