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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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Updated: Nov 11, 2025

A Mass Spectrometry-Based Approach to Identify Phosphoprotein Phosphatases and their Interactors

A Mass Spectrometry-Based Approach to Identify Phosphoprotein Phosphatases and their Interactors

Published on: April 29, 2022

Mammalian Flavoproteome Analysis Using Label-Free Quantitative Mass Spectrometry.

Giulia Calloni¹, R Martin Vabulas²

¹AB SCIEX Germany GmbH, Darmstadt, Germany.

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

|March 22, 2021

Summary

This summary is machine-generated.

Human flavoproteome stability is crucial for metabolism. Studying flavoenzyme changes during riboflavin (vitamin B2) deficiency reveals cellular adaptation mechanisms and disease insights.

Keywords:

Flavoproteome Mass spectrometry Protein aggregation Protein degradation Riboflavin

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Area of Science:

Biochemistry
Cellular Metabolism
Nutritional Science

Background:

The human flavoproteome, comprising essential flavin cofactor-dependent enzymes, is vital for metabolic functions like oxidative phosphorylation and fatty acid beta-oxidation.
Dysfunction in this proteome, caused by genetic mutations or riboflavin (vitamin B2) deficiency, leads to significant cellular abnormalities and diseases.
Understanding flavoproteome stability is key to comprehending cellular responses to nutrient stress.

Purpose of the Study:

To investigate the impact of riboflavin deficiency on the human flavoproteome.
To identify biological readouts of flavoenzyme destabilization under nutrient stress.
To explore the potential of proteomic-scale stability studies in biomedical research.

Main Methods:

Quantitative mass spectrometry was employed to analyze flavoproteome alterations.
Studies focused on conditions of riboflavin (vitamin B2) deficiency.
Analysis included biological readouts such as protein degradation and aggregation.

Main Results:

Flavoproteome changes were successfully studied under conditions of vitamin B2 deficiency.
Protein degradation and aggregation were identified as key indicators of flavoenzyme destabilization.
Insights into molecular mechanisms of metabolic adaptation to nutrient deficiency were gained.

Conclusions:

Proteomic-scale studies of flavoenzyme stability offer novel insights into metabolic adaptation.
Understanding flavoproteome dynamics is crucial for both basic and applied biomedical research.
This research highlights the importance of riboflavin for maintaining cellular health and metabolic function.