Chapter title |
Chemical Methods for Protein Ubiquitination
|
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Chapter number | 613 |
Book title |
Protein Ligation and Total Synthesis I
|
Published in |
Topics in current chemistry, January 2014
|
DOI | 10.1007/128_2014_613 |
Pubmed ID | |
Book ISBNs |
978-3-31-919185-0, 978-3-31-919186-7
|
Authors |
Renliang Yang, Chuan-Fa Liu |
Abstract |
In eukaryotic cells, many proteins undergo extensive post-translational modifications (PTMs) such as methylation, acetylation, phosphorylation, glycosylation, and ubiquitination. Among these, ubiquitination is a particularly interesting PTM from both structural and functional viewpoints. In ubiquitination, the C-terminal carboxyl group of the small ubiquitin protein is attached to the ε-amine of a lysine residue of a substrate protein through an isopeptide bond. Ubiquitination has been shown to be involved in the regulation of many cellular processes including protein degradation and gene expression. And dysfunction of these processes is implicated in many human diseases. Despite many years of intensive research, a large number of protein ubquitination events remain poorly characterized. The challenge lies with the tremendous difficulties in isolating homogeneously modified proteins from biological samples for structural and functional studies. Enzymatic ubiquitination in vitro often has limited practical value due to the large number of substrate-specific E3 ligases and the difficulties in identifying or isolating these enzymes. Chemical approaches to the preparation of ubiquitinated proteins provide a powerful solution, and the development of such approaches has been the subject of intense research by many research laboratories. This review summarizes the methodological developments of protein chemical ubiquitination in recent years. |
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