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Related Concept Videos

Proteomics01:33

Proteomics

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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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High-Resolution Complexome Profiling by Cryoslicing BN-MS Analysis
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High-Resolution Structural Proteomics of Mitochondria Using the 'Build and Retrieve' Methodology.

Zhemin Zhang1, Marios L Tringides1, Christopher E Morgan1

  • 1Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA.

Molecular & Cellular Proteomics : MCP
|October 15, 2023
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Summary
This summary is machine-generated.

Integrated systems biology and cryo-electron microscopy (cryo-EM) revealed high-resolution structures of nine human liver mitochondrial enzymes. This approach enables atomic-level exploration of tissue proteomes.

Keywords:
aminotransferasecatalasedehydrogenasedismutaseisomerase

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Area of Science:

  • Structural biology
  • Systems biology
  • Biochemistry

Background:

  • Integrated systems biology is an emerging field with potential applications in structural biology.
  • Exploring complex biological systems at the molecular level requires advanced techniques.

Purpose of the Study:

  • To apply single particle cryo-electron microscopy (cryo-EM) to analyze human liver mitochondrial proteomes.
  • To identify and determine high-resolution structures of multiple mitochondrial enzymes simultaneously.

Main Methods:

  • Utilized single particle cryo-electron microscopy (cryo-EM).
  • Analyzed enriched heterogeneous fractions from human liver mitochondrial lysate.
  • Integrated systems biology approaches were employed.

Main Results:

  • Successfully identified and solved high-resolution structures of nine essential mitochondrial enzymes.
  • Enzymes involved in fatty acid catabolism, reactive oxidative species clearance, and amino acid metabolism were characterized.
  • Multiple members of the acyl-CoA dehydrogenase family were identified.

Conclusions:

  • Cryo-EM is a powerful tool for exploring tissue proteomics at the atomic level.
  • This integrated approach advances the understanding of mitochondrial function and structure.
  • The methodology holds promise for future proteomic and structural studies.