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J Cell Biochem. 2006 Jan 1;97(1):71-83.

O-GlcNAc cycling: how a single sugar post-translational modification is changing the way we think about signaling networks.

Author information

1
Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.

Abstract

O-GlcNAc is an ubiquitous post-translational protein modification consisting of a single N-acetlyglucosamine moiety linked to serine or threonine residues on nuclear and cytoplasmic proteins. Recent work has begun to uncover the functional roles of O-GlcNAc in cellular processes. O-GlcNAc modified proteins are involved in sensing the nutrient status of the surrounding cellular environment and adjusting the activity of cellular proteins accordingly. O-GlcNAc regulates cellular responses to hormones such as insulin, initiates a protective response to stress, modulates a cell's capacity to grow and divide, and regulates gene transcription. This review will focus on recent work involving O-GlcNAc in sensing the environment and regulating signaling cascades.

PMID:
16237703
DOI:
10.1002/jcb.20676
[Indexed for MEDLINE]

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