期刊
CURRENT OPINION IN CHEMICAL BIOLOGY
卷 16, 期 5-6, 页码 488-497出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.cbpa.2012.10.021
关键词
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资金
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Canadian Institutes of Health Research
- NSERC
The addition of N-acetylglucosamine (GlcNAc) O-linked to serine and threonine residues of proteins is known as O-GlcNAc. This post-translational modification is found within multicellular eukaryotes on hundreds of nuclear and cytoplasmic proteins. O-GlcNAc transferase (OGT) installs O-GlcNAc onto target proteins and O-GlcNAcase (OGA) removes O-GlcNAc. Their combined action makes O-GlcNAc reversible and serves to regulate cellular O-GlcNAc levels. Here I review select recent literature on the catalytic mechanism of these enzymes and studies on the molecular basis by which these enzymes identify and process their substrates. Molecular level understanding of how these enzymes work, and the basis for their specificity, should aid understanding how O-GlcNAc contributes to diverse cellular processes ranging from cellular signaling through to transcriptional regulation.
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