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Related Concept Videos

Proteomics01:33

Proteomics

7.9K
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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Structural Protein Function01:56

Structural Protein Function

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Protein Organization01:24

Protein Organization

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Proteins are polymers of amino acid residues. They are versatile and responsible for different cellular functions, including DNA replication, molecular transport, catalysis, and structural support. Proteins have a hierarchical structure comprising at least three levels of organization: primary, secondary, and tertiary structure. Some large proteins have a quaternary structure where individual protein subunits are linked together.
The primary structure of a protein is its amino acid sequence....
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Related Experiment Video

Updated: Sep 8, 2025

Combining Chemical Cross-linking and Mass Spectrometry of Intact Protein Complexes to Study the Architecture of Multi-subunit Protein Assemblies
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Combining Chemical Cross-linking and Mass Spectrometry of Intact Protein Complexes to Study the Architecture of Multi-subunit Protein Assemblies

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State-of-the-Art and Future Directions in Structural Proteomics.

Lotta J Happonen1, Markku Varjosalo2

  • 1Division of Infection Medicine, Department of Clinical Sciences Lund, Faculty of Medicine and Science for Life Laboratory, Lund University, Lund, Sweden.

Molecular & Cellular Proteomics : MCP
|September 5, 2025
PubMed
Summary

Structural proteomics uses advanced mass spectrometry (MS) and integrative methods to map protein structures and dynamics. These techniques offer new insights into diseases and drug discovery for precision medicine.

Keywords:
HDX-MSLiP-MSXL-MSintegrated structural biologysystems structural proteomics

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Deep Proteome Profiling by Isobaric Labeling, Extensive Liquid Chromatography, Mass Spectrometry, and Software-assisted Quantification
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Analyzing Large Protein Complexes by Structural Mass Spectrometry
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Analyzing Large Protein Complexes by Structural Mass Spectrometry
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Analyzing Large Protein Complexes by Structural Mass Spectrometry

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Area of Science:

  • Structural biology
  • Proteomics
  • Biochemistry

Background:

  • Structural proteomics has advanced significantly due to new experimental and computational tools.
  • Mass spectrometry (MS)-based techniques like cross-linking MS (XL-MS), hydrogen-deuterium exchange MS (HDX-MS), and limited proteolysis MS (LiP-MS) provide deep insights into protein structure and interactions.

Purpose of the Study:

  • To review the current state-of-the-art in structural proteomics.
  • To highlight methodological advances and the integration of XL-MS, HDX-MS, and LiP-MS with other structural biology techniques.
  • To discuss the applications of structural proteomics in understanding disease mechanisms and guiding drug discovery.

Main Methods:

  • Mass spectrometry-based approaches (XL-MS, HDX-MS, LiP-MS).
  • Affinity purification (AP), co-immunoprecipitation (co-IP), proximity labeling (PL), and spatial proteomics.
  • Integration with cryo-electron microscopy (cryo-EM), NMR spectroscopy, X-ray crystallography, and small-angle scattering (SAXS/SANS).
  • AI-driven predictive models (AlphaFold, RoseTTAFold).

Main Results:

  • Advanced MS techniques offer unprecedented insights into protein topology, dynamics, and interactions.
  • Integration of diverse methods enables systems-wide characterization of the structural proteome.
  • AI models facilitate high-resolution modeling of protein complexes and dynamic assemblies.
  • Structural proteomics is crucial for deciphering disease mechanisms and identifying therapeutic targets.

Conclusions:

  • Structural proteomics is revolutionizing precision medicine through enhanced understanding of protein structure and function.
  • Future research will focus on fully integrative, multimodal approaches combining experimental and computational methods.
  • A holistic understanding of the human proteome is achievable through these advanced techniques.