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Related Concept Videos

Tandem Mass Spectrometry01:21

Tandem Mass Spectrometry

Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and reduce chemical noise during analyte detection. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called...
Peptide Identification Using Tandem Mass Spectrometry01:33

Peptide Identification Using Tandem Mass Spectrometry

Tandem mass spectrometry, also known as MS/MS or MS2, is an analytical technique that employs two mass analyzers. Essentially it is a series of mass spectrometers that helps isolate a particular biomolecule and then helps study its chemical properties.
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Proteomics01:33

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...
MALDI-TOF Mass Spectrometry01:19

MALDI-TOF Mass Spectrometry

Mass spectrometry is a powerful characterization technique that can identify and separate a wide variety of compounds ranging from chemical to biological entities, based on their mass-to-charge ratio (m/z). The instruments that allow this detection, known as mass spectrometers, have three components: an ion source, a mass analyzer, and a detector. These spectrometers differ based on the nature of their ion source and analyzers.Matrix-assisted laser desorption ionization (MALDI) is a commonly...

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Mass spectrometry proteomics for studying mitostasis.

Lakshita Sharma1, Sristi Chakroborty1, Hirak Das1

  • 1Chair of Biochemistry II, Theodor Boveri-Institute, Biocenter, University of Würzburg, Würzburg, Germany.

Protein Science : a Publication of the Protein Society
|June 15, 2026
PubMed
Summary
This summary is machine-generated.

Mass spectrometry (MS) proteomics reveals how cells maintain mitochondrial health through the mitostasis network. This approach offers a deep understanding of protein quality control and cellular homeostasis, crucial for preventing disease.

Keywords:
complexome profilingdynamic SILACinteractome analysismitochondrianascent proteomicsprotein import stressproteome dynamicsproteostasisproximity labelingquantitative mass spectrometry

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Area of Science:

  • Cellular Biology
  • Biochemistry
  • Proteomics

Background:

  • Mitochondrial integrity is vital for cellular homeostasis.
  • Mitochondria rely on complex protein quality control (QC) systems, forming a mitostasis network.
  • Disruptions in mitochondrial homeostasis, such as impaired protein import, cause proteotoxic stress and disease.

Purpose of the Study:

  • To review state-of-the-art mass spectrometry (MS) technologies and proteomics approaches for studying mitostasis.
  • To highlight how these methods enable a deep, proteome-wide analysis of mitochondrial protein QC.
  • To demonstrate the application of MS-based proteomics in understanding cellular responses to stress and disease mechanisms.

Main Methods:

  • Quantitative MS strategies (label-free, metabolic, chemical labeling) for tracking proteome dynamics.
  • Spatial and interaction-based proteomics (affinity purification-MS, proximity labeling, complexome profiling) for network organization.
  • Advanced MS techniques (nascent chain, dynamic proteomics) for early stress response and regulation analysis.

Main Results:

  • MS-based proteomics provides unprecedented depth in dissecting mitostasis.
  • Quantitative, spatial, and interaction proteomics reveal the organization and regulation of mitochondrial QC.
  • Dynamic and nascent proteomics strategies offer insights into early stress responses and rapid regulation.

Conclusions:

  • The integration of diverse MS-based proteomics approaches enables systems-level assessment of mitostasis.
  • This holistic approach facilitates a nuanced understanding of this essential cellular process.
  • Understanding mitostasis mechanisms through proteomics is key to addressing associated human diseases.