AUTHOR=Yin Ruoting , Wang Xin , Li Cheng , Gou Yuhan , Ma Xuecheng , Liu Yongzhao , Peng Jianfang , Wang Chao , Zhang Ying 

TITLE=Mass Spectrometry for O-GlcNAcylation

JOURNAL=Frontiers in Chemistry

VOLUME=9

YEAR=2021

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2021.737093

DOI=10.3389/fchem.2021.737093

ISSN=2296-2646

ABSTRACT=<p>O-linked <italic>β</italic>-N-acetylglucosamine modification (O-GlcNAcylation) at proteins with low-abundance expression level and species diversity, shows important roles in plenty of biological processes. O-GlcNAcylations with abnormal expression levels are associated with many diseases. Systematically profiling of O-GlcNAcylation at qualitative or quantitative level is vital for their function understanding. Recently, the combination of affinity enrichment, metabolic labeling or chemical tagging with mass spectrometry (MS) have made significant contributions to structure-function mechanism elucidating of O-GlcNAcylations in organisms. Herein, this review provides a comprehensive update of MS-based methodologies for quali-quantitative characterization of O-GlcNAcylation.</p>