The proteasome is a validated target in drug discovery for diseases associated with unusual proteasomal activity. Here we report that two diphenyldihaloketones, CLEFMA and EF24, inhibit the peptidase activity of the 26S proteasome.
Geeta Rao +6 more
doaj +1 more source
The proteasome cap RPT5/Rpt5p subunit prevents aggregation of unfolded ricin A chain [PDF]
The plant cytotoxin ricin enters mammalian cells by receptor-mediated endocytosis, undergoing retrograde transport to the endoplasmic reticulum (ER) where its catalytic A chain (RTA) is reductively separated from the holotoxin to enter the cytosol and ...
Spooner, Robert A. +12 more
core +1 more source
Proteasome Activity Is Affected by Fluctuations in Insulin-Degrading Enzyme Distribution.
Insulin-Degrading-Enzyme (IDE) is a Zn2+-dependent peptidase highly conserved throughout evolution and ubiquitously distributed in mammalian tissues wherein it displays a prevalent cytosolic localization.
Diego Sbardella +9 more
doaj +1 more source
Early cysteine-dependent inactivation of 26S proteasomes does not involve particle disassembly
Under oxidative stress 26S proteasomes suffer reversible disassembly into its 20S and 19S subunits, a process mediated by HSP70. This inhibits the degradation of polyubiquitinated proteins by the 26S proteasome and allows the degradation of oxidized ...
Martín Hugo +7 more
doaj +1 more source
Poly-Ub-substrate-degradative activity of 26S proteasome is not impaired in the aging rat brain. [PDF]
Proteostasis is critical for the maintenance of life. In neuronal cells an imbalance between protein synthesis and degradation is thought to be involved in the pathogenesis of neurodegenerative diseases during aging.
Carolin Giannini +7 more
doaj +1 more source
Cic1p/Nsa3p is required for synthesis and nuclear export of 60S ribosomal subunits [PDF]
Cic1p/Nsa3p was previously reported to be associated with the 26S proteasome and required for the degradation of specific substrates, but was also shown to be associated with early pre-60S particles and to be localized to the nucleolus.
Tollervey, D +7 more
core +1 more source
Molecular Details Underlying Dynamic Structures and Regulation of the Human 26S Proteasome [PDF]
<p>The 26S proteasome is the macromolecular machine responsible for ATP/ubiquitin dependent degradation. As aberration in proteasomal degradation has been implicated in many human diseases, structural analysis of the human 26S proteasome complex is
Novitsky, E. +137 more
core +1 more source
Ubiquitin like protein 5 (UBL5) interacts with other proteins to regulate their function but differs from ubiquitin and other UBLs because it does not form covalent conjugates.
Binghua Chen +12 more
doaj +1 more source
Deletion of proteasomal subunit S5a/Rpn10/p54 causes lethality, multiple mitotic defects and overexpression of proteasomal genes in Drosophila melanogaster [PDF]
The regulatory complex of the 26S proteasome is responsible for the selective recognition and binding of multiubiquitinated proteins. It was earlier shown that the subunit S5a/Rpn10/p54 of the regulatory complex is the only cellular protein capable of ...
Andó, István +7 more
core +1 more source
Phosphatase UBLCP1 controls proteasome assembly [PDF]
Ubiquitin-like domain-containing C-terminal domain phosphatase 1 (UBLCP1), an FCP/SCP phosphatase family member, was identified as the first proteasome phosphatase.
Shuangwu Sun +7 more
doaj +1 more source

