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[Progress in the detection of selenium-containing trace proteins].

Qiong Liu1, Zhen Peng, Xue-Ying Liang

  • 1College of Life Sciences, Shenzhen University, Shenzhen 518060, China. liuqiong@szu.edu.cn

Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|May 19, 2009
PubMed
Summary

Selenium (Se) detection in trace proteins is crucial for understanding selenoproteins. This review highlights laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) for Se detection in electrophoretically separated proteins.

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Area of Science:

  • Biochemistry
  • Analytical Chemistry
  • Proteomics

Context:

  • Selenium (Se) is an essential trace element vital for biological functions, primarily mediated by selenoproteins.
  • Accurate detection of Se-containing proteins is essential for confirming bioinformatically predicted or electrophoretically separated selenoproteins in selenoproteomics.

Purpose:

  • To review the principles and applications of laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) for detecting selenium in proteins separated by gel electrophoresis.
  • To summarize advancements in mass spectrometry techniques for identifying and characterizing Se-containing proteins post-gel electrophoresis.

Summary:

  • This review focuses on laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) for sensitive selenium detection in proteins.
  • It covers applications in gel electrophoresis and summarizes other mass spectrometry methods like ICP-MS coupled with HPLC, MALDI-TOF MS, and nano HPLC-ESI-MS/MS for Se-protein analysis.
  • Challenges and future research directions are also discussed.

Impact:

  • Provides a comprehensive overview of cutting-edge techniques for Se-protein analysis.
  • Facilitates the confirmation and characterization of selenoproteins, advancing the field of selenoproteomics.
  • Highlights LA-ICP-MS as a powerful tool for trace element analysis in complex biological samples.