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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...

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Related Experiment Video

Updated: Jun 23, 2025

Deep Proteome Profiling by Isobaric Labeling, Extensive Liquid Chromatography, Mass Spectrometry, and Software-assisted Quantification

Deep Proteome Profiling by Isobaric Labeling, Extensive Liquid Chromatography, Mass Spectrometry, and Software-assisted Quantification

Published on: November 15, 2017

Fully Integrated Online Strategy for Highly Sensitive Proteome Profiling.

Yun Yang^1,2, Ruijun Tian^3,4

¹International Academy of Phronesis Medicine (Guang Dong), Guangzhou, China.

Methods in Molecular Biology (Clifton, N.J.)

|June 21, 2024

Summary

This summary is machine-generated.

This study introduces a new, scalable device for low-input proteomics, enabling deep proteome profiling from small cell samples. The integrated workflow streamlines sample preparation for mass spectrometry analysis.

Keywords:

Low-input proteomics Sample preparation nanoLC-MS

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Last Updated: Jun 23, 2025

Deep Proteome Profiling by Isobaric Labeling, Extensive Liquid Chromatography, Mass Spectrometry, and Software-assisted Quantification

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Published on: November 15, 2017

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A Streamlined Approach for Mass Spectrometry-Based Proteomics Using Selected Tissue Regions

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Published on: April 18, 2025

Area of Science:

Proteomics
Biochemistry
Analytical Chemistry

Background:

Low-input proteomics bridges the gap between standard and single-cell proteomics.
Achieving deep proteome profiling from limited cell samples requires specialized preparation methods.

Purpose of the Study:

To describe protocols for preparing and using a novel, user-friendly, and scalable device for low-input sample processing.
To enable deep proteome profiling from tens to hundreds of mammalian cells.

Main Methods:

Development of an integrated device for protein preconcentration, impurity removal, reduction, alkylation, digestion, and desalting.
Direct connection of the device to online nano liquid chromatography-mass spectrometry (nanoLC-MS) to prevent sample transfer.

Main Results:

The described device offers an easy-to-use and scalable solution for low-input proteomics.
The integrated workflow successfully prepares samples for deep proteome profiling.

Conclusions:

The developed device and protocol facilitate efficient and deep proteome profiling from low-input samples.
This approach enhances the applicability of proteomics to biological samples with limited cell numbers.