Results 41 to 50 of about 13,489 (251)

Peptidomimetics Based on C-Terminus of Blm10 Stimulate Human 20S Proteasome Activity and Promote Degradation of Proteins

open access: yesBiomolecules, 2022
Degradation of misfolded, redundant and oxidatively damaged proteins constitutes one of the cellular processes which are influenced by the 20S proteasome.
Katarzyna Cekała   +8 more
doaj   +1 more source

Silencing of the 20S proteasomal subunit-α6 triggers full oogenesis arrest and increased mRNA levels of the selective autophagy adaptor protein p62/SQSTM1 in the ovary of the vector Rhodnius prolixus.

open access: yesPLoS Neglected Tropical Diseases, 2023
The high reproductive rates of insects contribute significantly to their ability to act as vectors of a variety of vector-borne diseases. Therefore, it is strategically critical to find molecular targets with biotechnological potential through the ...
Allana Faria-Reis   +6 more
doaj   +1 more source

Subunit arrangement in the human 20S proteasome [PDF]

open access: yesProceedings of the National Academy of Sciences, 1997
In human 20S proteasomes two copies of each of seven different α-type and seven different β-type subunits are assembled to form a stack of four seven-membered rings, giving the general structure α 1–7 , β 1–7 , β 1–7
Kopp, Friedrich   +5 more
openaire   +2 more sources

Dissecting the assembly pathway of the 20S proteasome

open access: yesFEBS Letters, 1997
Proteasomes reach their mature active state via a complex cascade of folding, assembly and processing events. The Rhodococcus proteasome offers a means to dissect the assembly pathway and to characterize intermediates; its four subunits (α1, α2, β1, β2) assemble efficiently in vitro with any combination of α and β. Assembly studies with wild‐type and N‐
Zühl, F.   +3 more
openaire   +3 more sources

Redox Control of 20S Proteasome Gating [PDF]

open access: yesAntioxidants & Redox Signaling, 2012
The proteasome is the primary contributor in intracellular proteolysis. Oxidized or unstructured proteins can be degraded via a ubiquitin- and ATP-independent process by the free 20S proteasome (20SPT). The mechanism by which these proteins enter the catalytic chamber is not understood thus far, although the 20SPT gating conformation is considered to ...
Gustavo M, Silva   +10 more
openaire   +2 more sources

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Sex-specific adaptive homeostasis in D. melanogaster depends on increased proteolysis by the 20S Proteasome: Data-in-Brief

open access: yesData in Brief, 2018
Adaptive homeostasis enables rapid cellular signaling, leading to transcriptional and translational modifications (Davies, 2016) [1]. The Proteasome is one of the main cellular proteolytic enzymes that plays an essential role in the rapid clearance of ...
Laura C.D. Pomatto   +3 more
doaj   +1 more source

Microbiome−host proteostasis crosstalk—An emerging perspective on mechanisms and interventions toward healthy longevity

open access: yesFEBS Letters, EarlyView.
Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley   +1 more source

The 20S as a stand-alone proteasome in cells can degrade the ubiquitin tag

open access: yesNature Communications, 2021
The 20S particle is part of the 26S proteasome, but also exists as a free complex. Here, the authors outline signature activities of the 20S and combine chemical, structural, functional and proteomic assays to show that the 20S can degrade ubiquitin tags
Indrajit Sahu   +14 more
doaj   +1 more source

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

open access: yesFEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source

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