Detecting single amino acids and small peptides by combining isobaric tags and peptidomics.
EUROPEAN JOURNAL OF MASS SPECTROMETRY(2019)
摘要
Single amino acids and small endogenous peptides play important roles in maintaining a properly functioning organism. These molecules are however currently only routinely identified in targeted approaches. In a small proof-of-concept mass spectrometry experiment, we found that by combining isobaric tags and peptidomics, and by targeting singly charged molecules, we were able to identify a significant amount of single amino acids and small endogenous peptides using a basic mass-based identification approach. While there is still room for improvement, our simple test indicates that a limited amount of extra work when setting up the mass spectrometry experiment could potentially lead to a wealth of additional information.
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关键词
Peptidomics,isobaric tags,amino acids,endogenous peptides,tandem mass tags,metabolites
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