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Proteasome assembly

Cellular and Molecular Life Sciences, 2014
In eukaryotic cells, proteasomes are highly conserved protease complexes and eliminate unwanted proteins which are marked by poly-ubiquitin chains for degradation. The 26S proteasome consists of the proteolytic core particle, the 20S proteasome, and the 19S regulatory particle, which are composed of 14 and 19 different subunits, respectively ...
Zhu Chao, Gu, Cordula, Enenkel
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Apoptosis and the Proteasome

1999
The ubiquitin-proteasome pathway is responsible for the regular turnover of a wide variety of proteins and is a critical regulator of many cellular processes. Although this pathway is abundant and ubiquitous, it is also discriminating. This specificity is achieved because there are multiple levels of regulation at work in the pathway.
Barbara A. Osborne, Lisa Grimm
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Proteasomes and proteasome inhibition in the central nervous system

Free Radical Biology and Medicine, 2001
Although the proteasome is responsible for the majority of intracellular protein degradation, and has been demonstrated to play a pivotal role in a diverse array of cellular activities, the role of the proteasome in the central nervous system is only beginning to be elucidated.
Qunxing Ding, Jeffrey N. Keller
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Proteasome Inhibitors

Materials and Methods, 2012
In May 2003, the US Food and Drug Administration (FDA) granted accelerated approval for the use of the first-in-class proteasome inhibitor bortezomib as a third-line therapy in multiple myeloma, and the European Union followed suit a year later. Bortezomib has subsequently been approved for multiple myeloma as a second-line treatment on its own and as ...
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Eubacterial proteasomes

Molecular Biology Reports, 1997
Proteasomes are large, multisubunit proteases with highly conserved structures. The 26S proteasome of eukaryotes is an ATP-dependent enzyme of about 2 MDa, which acts as the central protease of the ubiquitin-dependent pathway of protein degradation. The core of the 26S complex is formed by the 20S proteasome, an ATP-independent, barrel-shaped protease ...
A, Lupas   +6 more
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The Proteasome and Ageing

2023
The proteasome is a multi-subunit proteolytic complex that functions to degrade normal proteins for physiological regulation and to eliminate abnormal proteins for cellular protection. Generally, the proteasome targets substrate proteins that are marked by attachment of multiple ubiquitin molecules.
Hegde, Ashok N.   +3 more
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Structure of the Proteasome

2012
The ubiquitin-proteasomal system is an essential element of the protein quality control machinery in cells. The central part of this system is the 20S proteasome. The proteasome is a barrel-shaped multienzyme complex, containing several active centers hidden at the inner surface of the hollow cylinder.
Tobias Jung, Tilman Grune
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Anti‐20S proteasome autoantibodies inhibit proteasome stimulation by proteasome activator PA28

Arthritis & Rheumatism, 2006
AbstractObjectiveThe ubiquitin‐proteasome system plays a central role in cellular homeostasis as well as in regulation of the inflammatory and stress responses. However, the occurrence of autoantibodies against 20S proteasome has, to date, been considered to be a nonspecific epiphenomenon in patients with autoimmune disorders. This study was undertaken
Karl Egerer   +6 more
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Purification of Proteasomes, Proteasome Subcomplexes, and Proteasome-Associated Proteins From Budding Yeast

2005
The proteasome is a highly complex, ATP-dependent protease, consisting of over 30 subunits, and dedicated mainly to the degradation of ubiquitin-protein conjugates. Proteasomes are evolutionarily conserved in the eukaryotic kingdom, and those of yeast are well suited to serve as a general model.
Daniel Finley   +2 more
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The 20S Proteasome

2002
In contrast to our detailed knowledge of prokaryotic proteasomes, we have only a limited understanding of the prokaryotic regulators and their functional interaction with the proteasome. Most probably, we will soon learn more about the molecular structure and the mechanism of action of the prokaryotic regulators.
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