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Related Concept Videos

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...

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Nitropeptide Profiling and Identification Illustrated by Angiotensin II
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Proteomic methods for analysis of S-nitrosation.

Nicholas J Kettenhofen1, Katarzyna A Broniowska, Agnes Keszler

  • 1Department of Biophysics and Free Radical Research Center, Medical College of Wisconsin, Milwaukee, WI 53226, USA.

Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
|March 16, 2007
PubMed
Summary

This review explores proteomic techniques for identifying S-nitrosated proteins, a key cellular redox signaling mechanism. Understanding these modifications is crucial for both physiological and pathological research.

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Area of Science:

  • Biochemistry
  • Proteomics
  • Cellular Signaling

Background:

  • Protein S-nitrosation is a post-translational modification involving thiol residues, forming S-nitrosothiols.
  • This modification is implicated in cellular redox signaling, where nitric oxide alters protein function.
  • Accurate detection of S-nitrosated proteins is vital for understanding their physiological and pathological roles.

Purpose of the Study:

  • To review and discuss current proteomic methods for detecting and identifying S-nitrosated proteins.
  • To highlight the need for advanced techniques to analyze S-nitrosation in complex biological samples.
  • To evaluate the advantages and disadvantages of existing proteomic methodologies for S-nitrosation analysis.

Main Methods:

  • Review of literature on proteomic approaches for S-nitrosation detection.
  • Analysis of methods for identifying S-nitrosothiols in protein mixtures.
  • Comparison of techniques for quantifying S-nitrosated proteins.

Main Results:

  • Proteomic methods for S-nitrosation detection are still developing.
  • Various techniques exist for detecting total S-nitrosation or specific S-nitrosothiols.
  • Challenges remain in identifying low levels of S-nitrosated proteins in complex samples.

Conclusions:

  • Proteomic analysis of S-nitrosation is an emerging field with significant potential.
  • Further development of sensitive and specific methods is required.
  • Understanding S-nitrosation is critical for advancing research in redox biology and disease.