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Related Concept Videos

Proteomics01:33

Proteomics

7.3K
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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The Proteasome01:13

The Proteasome

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Eukaryotic cells can degrade proteins through several pathways. One of the most important among these is the ubiquitin-proteasome pathway. It helps the cell eliminate the misfolded, damaged, or unwarranted cytoplasmic proteins in a highly specific manner.
In this pathway, the target proteins are first tagged with small proteins called ubiquitin. This involves participation of a series of enzymes including— E1 (ubiquitin-activating enzyme), E2 (ubiquitin-conjugating enzyme), and E3...
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Protein Networks02:26

Protein Networks

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An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
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Subcellular Fractionation01:32

Subcellular Fractionation

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The homogenate obtained after cell lysis contains various membrane-bound organelles that can be further separated into pure fractions by subcellular fractionation. These isolates are used to study specific cellular components, analyze localized protein activity, and are even employed in diagnostics. Fractionation is typically achieved using centrifugation methods, the most common being density-gradient and differential centrifugation.
Differential Centrifugation
Differential centrifugation is...
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Proteins: From Genes to Degradation02:11

Proteins: From Genes to Degradation

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Within a biological system, the DNA encodes the RNA, and the nucleotide sequence in the RNA further defines the amino acid sequence in the protein. This is referred to as “The Central Dogma of Molecular Biology” - a term coined by Francis Crick.  Central dogma is a firm principle in biology that defines the flow of genetic information within any life form. The two fundamental steps in central dogma are - transcription and translation.
Transcription is the synthesis of RNA...
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Mechanical Protein Functions01:58

Mechanical Protein Functions

4.9K
Proteins perform many mechanical functions in a cell. These proteins can be classified into two general categories- proteins that generate mechanical forces and proteins that are subjected to mechanical forces. Proteins providing mechanical support to the structure of the cell, such as keratin, are subjected to mechanical force, whereas proteins involved in cell movement and transport of molecules across cell membranes, such as an ion pump, are examples of generating mechanical force. 
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Related Experiment Video

Updated: Jun 29, 2025

JUMPn: A Streamlined Application for Protein Co-Expression Clustering and Network Analysis in Proteomics
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JUMPn: A Streamlined Application for Protein Co-Expression Clustering and Network Analysis in Proteomics

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Proteomics Impact on Cell Biology to Resolve Cell Structure and Function.

John J M Bergeron1

  • 1Department of Medicine, McGill University Hospital Research Institute, Montreal, Quebec, Canada.

Molecular & Cellular Proteomics : MCP
|April 4, 2024
PubMed
Summary
This summary is machine-generated.

Advances in proteomics and imaging technologies like cryo-electron microscopy (cryo-EM) are enabling high-resolution cell structure analysis. Integrating these fields will create a comprehensive protein compendium for understanding cellular mechanisms.

Keywords:
cell structurecryo-EMcryo-electron tomographymolecular/virtual microscopeproteomics

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Area of Science:

  • Cell biology
  • Structural biology
  • Proteomics

Background:

  • Recent advancements in proteomics and imaging technologies, including electron microscopy (EM) and light microscopy, have accelerated the detailed analysis of cellular structures.
  • Cryo-electron microscopy (cryo-EM) allows for high-resolution protein structure determination.
  • Artificial intelligence (AI) is increasingly utilized for comprehensive protein analysis.

Purpose of the Study:

  • To highlight the integration of proteomics and imaging techniques for high-resolution cell structure analysis.
  • To discuss the potential of combining proteomics data with structural imaging.
  • To outline the path towards a complete protein compendium for understanding cell structure and function.

Main Methods:

  • Integration of proteomics data with imaging modalities (EM, light microscopy).
  • Utilizing cryo-EM for protein structure determination.
  • Application of artificial intelligence for data analysis and resolution enhancement.

Main Results:

  • Proteomics data resolution is approaching nanometer to subnanometer accuracy for cell structures.
  • Proteomics is advancing faster than experimental structural imaging.
  • The integration of these fields is crucial for achieving detailed cellular understanding.

Conclusions:

  • The synergy between proteomics and advanced imaging techniques is key to elucidating complex cellular mechanisms.
  • Achieving a comprehensive compendium of all proteins is a significant goal for mechanistic cell biology.
  • Continued integration will drive future discoveries in understanding cell structure and function at an unprecedented resolution.