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In Vitro Ubiquitination: Self-Ubiquitination, Chain Formation, and Substrate Ubiquitination Assays

2016
Ubiquitination of proteins in vitro has evolved as an indispensable tool for the functional analysis of this posttranslational modification. In vitro ubiquitination is particularly helpful to study conjugation mechanisms. The efficiency of the ubiquitination reaction depends in part on the quality of the enzymes utilized.
E. Maspero, S. Polo
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THE UBIQUITIN SYSTEM

Annual Review of Biochemistry, 1998
The selective degradation of many short-lived proteins in eukaryotic cells is carried out by the ubiquitin system. In this pathway, proteins are targeted for degradation by covalent ligation to ubiquitin, a highly conserved small protein. Ubiquitin-mediated degradation of regulatory proteins plays important roles in the control of numerous processes ...
A, Hershko, A, Ciechanover
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One Ubiquitin, Two Ubiquitin, Three Ubiquitin, Four

Science's STKE, 2007
The role of protein ubiquitination is well known in promoting regulated protein degradation. Mukhopadhyay and Riezman review what is known about the contribution of protein ubiquitination in other cellular pathways, including intracellular signaling, endocytosis, and protein sorting. D. Mukhopadhyay, H.
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The Ubiquitin Code

Annual Review of Biochemistry, 2012
The posttranslational modification with ubiquitin, a process referred to as ubiquitylation, controls almost every process in cells. Ubiquitin can be attached to substrate proteins as a single moiety or in the form of polymeric chains in which successive ubiquitin molecules are connected through specific isopeptide bonds.
David, Komander, Michael, Rape
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[Progress in ubiquitin, ubiquitin chain and protein ubiquitination].

Sheng wu gong cheng xue bao = Chinese journal of biotechnology, 2016
Protein ubiquitination is one of the most important and widely exist protein post-translational modifications in eukaryotic cells, which takes the ubiquitin and ubiquitin chains as signal molecules to covalently modify other protein substrates. It plays an important roles in the control of almost all of the life processes, including gene transcription ...
Qiuyan, Lan   +4 more
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The ubiquitin system

Trends in Biochemical Sciences, 1997
Eukaryotes contain a highly conserved multi-enzyme system that covalently links ubiquitin to a variety of intracellular proteins that bear degradation signals recognized by this system. The resulting ubiquitin-protein conjugates are degraded by the 26S proteasome, a large ATP-dependent protease.
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Is This Protein Ubiquitinated?

2005
Covalent modification of proteins with ubiquitin plays an important role in a wide array of cellular processes (Hershko and Ciechanover, 1998; Pickart, 2004). For this reason an increasing number of investigators in diverse research fields are confronted with the question whether their favorite proteins are ubiquitinated.
Peter, Kaiser, Christian, Tagwerker
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The Ubiquitin Code in the Ubiquitin-Proteasome System and Autophagy

Trends in Biochemical Sciences, 2017
The conjugation of the 76 amino acid protein ubiquitin to other proteins can alter the metabolic stability or non-proteolytic functions of the substrate. Once attached to a substrate (monoubiquitination), ubiquitin can itself be ubiquitinated on any of its seven lysine (Lys) residues or its N-terminal methionine (Met1).
Yong Tae, Kwon, Aaron, Ciechanover
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Modification of Proteins by Ubiquitin and Ubiquitin-Like Proteins

Annual Review of Cell and Developmental Biology, 2006
Following the discovery of protein modification by the small, highly conserved ubiquitin polypeptide, a number of distinct ubiquitin-like proteins (Ubls) have been found to function as protein modifiers as well. These Ubls, which include SUMO, ISG15, Nedd8, and Atg8, function as critical regulators of many cellular processes, including transcription ...
Oliver, Kerscher   +2 more
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Ubiquitin in chains

Trends in Biochemical Sciences, 2000
The ubiquitin-proteasome system fulfills an essential function in eukaryotes by controlling the levels of crucial intracellular regulatory proteins. In this system, a specific type of polyubiquitin chain acts as the proximal signal for targeting substrates to 26S proteasomes for degradation.
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