期刊
MOLECULES
卷 27, 期 5, 页码 -出版社
MDPI
DOI: 10.3390/molecules27051601
关键词
cysteine; cysteine-containing peptide; chemoselective modification; peptide enrichment; charge derivatization; Michael addition
This article describes recent advances in cysteine-containing peptide modification techniques based on solution and solid phase derivatization and enrichment strategies, which serve as effective solutions for the analysis of complex mixtures.
One effective solution in the analysis of complex mixtures, including protein or cell hydrolysates, is based on chemoselective derivatization of a selected group of compounds by using selective tags to facilitate detection. Another method is based on the capture of the desired compounds by properly designed solid supports, resulting in sample enrichment. Cysteine is one of the rarest amino acids, but at least one cysteine residue is present in more than 91% of human proteins, which clearly confirms its important role in biological systems. Some cysteine-containing peptides may serve as significant molecular biomarkers, which may emerge as key indices in the management of patients with particular diseases. In the current review, we describe recent advances in the development of cysteine-containing peptide modification techniques based on solution and solid phase derivatization and enrichment strategies.
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