A convenient method to extract matrix-assisted laser desorption/ionization mass spectrometry spectra from phosphate-containing peptide mixtures

Sheng Yu Huang, Jue Liang Hsu, Nicholas A. Morrice, Chin Jen Wu, Shu Hui Chen

研究成果: Article

7 引文 斯高帕斯(Scopus)

摘要

Here we report that the addition of HCl or HNO3 to the matrix at a limited concentration dramatically increases the signal-to-noise ratio of the matrix-assisted laser desorption/ionization mass spectrometry spectrum of phosphate-containing peptide mixtures such as those obtained from an immobilised metal affinity capture eluent or a phosphate-containing tryptic digest. These improved spectra permitted both peptide identification and the determination of protein phosphorylation sites. In comparison to existing methods for removing salts, this method requires less sample manipulation and thus less sample loss is expected.

原文English
頁(從 - 到)1935-1938
頁數4
期刊Proteomics
4
發行號7
DOIs
出版狀態Published - 2004 七月

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Molecular Biology

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