期刊
ANALYTICAL CHEMISTRY
卷 91, 期 18, 页码 11932-11937出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.analchem.9b02736
关键词
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资金
- NIH [U01CA231081, R01 DK071801, R21 AG0S5377, RF1 AG052324]
- Robert Draper Technology Innovation Fund
- Wisconsin Alumni Research Foundation (WARF)
- NIH Shared Instrument Grant [NIH-NCRR S10RR029531]
- University of Wisconsin-Madison, Office of the Vice Chancellor for Research and Graduate Education
- Wisconsin Alumni Research Foundation
- University of Wisconsin-Madison School of Pharmacy
Glycosylation is one of the most important post-translational modifications (PTMs) with essential physiological functions, including protein folding, cell signaling, and immune response. Thus, various qualitative and quantitative glycomics analysis strategies have been developed. Recently, the isobaric multiplex reagents for carbonyl-containing compound (SUGAR) tag was developed for quantitative glycomics with multiplexing capacity and increased reporter ion yield. To further improve quantification efficiency and enable quantifying low-abundance species, the mass defect based triplex SUGAR (mdSUGAR) tag has been designed. In addition, we also introduce additional reaction sites for mdSUGAR at the terminal sialic acid by periodate oxidation of the polyhydroxy chain to extend the mass difference and lower the requirement for resolving power. As a result, mdSUGAR tags show complete labeling efficiency, improved fragmentation pattern, and accurate quantification. Moreover, the quantitative performance of the mdSUGAR tags in a complex system has been systematically evaluated and demonstrated reliable results.
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