期刊
MOLECULES
卷 27, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/molecules27082411
关键词
proteomics; tandem mass spectrometry (MS; MS); biomedical research; biomarkers
资金
- National Cancer Institute of the National Institutes of Health [R15CA260126]
- Romania-USA Fulbright Fellowship Scholarship Program (BAP visitor and CCD host)
Mass spectrometry enables the analysis of proteins and peptides, including identification of mass, amino acid sequence, and post-translational modifications. In biomedical research, mass spectrometry can be used to identify relevant biomarkers for diagnostic and therapeutic purposes.
Mass Spectrometry (MS) allows the analysis of proteins and peptides through a variety of methods, such as Electrospray Ionization-Mass Spectrometry (ESI-MS) or Matrix-Assisted Laser Desorption Ionization-Mass Spectrometry (MALDI-MS). These methods allow identification of the mass of a protein or a peptide as intact molecules or the identification of a protein through peptide-mass fingerprinting generated upon enzymatic digestion. Tandem mass spectrometry (MS/MS) allows the fragmentation of proteins and peptides to determine the amino acid sequence of proteins (top-down and middle-down proteomics) and peptides (bottom-up proteomics). Furthermore, tandem mass spectrometry also allows the identification of post-translational modifications (PTMs) of proteins and peptides. Here, we discuss the application of MS/MS in biomedical research, indicating specific examples for the identification of proteins or peptides and their PTMs as relevant biomarkers for diagnostic and therapy.
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