Results 81 to 90 of about 76,539 (287)
Structure, Dynamics and Function of the 26S Proteasome [PDF]
, 2020 AbstractThe 26S proteasome is the most complex ATP-dependent protease machinery, of ~2.5 MDa mass, ubiquitously found in all eukaryotes. It selectively degrades ubiquitin-conjugated proteins and plays fundamentally indispensable roles in regulating almost all major aspects of cellular activities.
openaire +2 more sources
Oncogenic addiction to high 26S proteasome levels
, 2017 Proteasomes are large intracellular complexes responsible for the degradation of cellular proteins. The altered protein homeostasis of cancer cells results in increased dependency on proteasome function.
Yosef Shaul +5 more
core +1 more source
Regulation of SCF Ubiquitin Ligases by Jab1/Csn5 and the Cop9 Signalosome [PDF]
, 2006 SCF ubiquitin ligases regulate the ubiquitin-dependent proteolysis of a myriad of substrate proteins, including p27, Cyclin E, and IkBa. To further gain insight into SCF regulation and function, we purified SCF from mammalian cells and found the Cop9 ...
Cope, Gregory Allan
core +1 more source
Auto‐Downregulation of the Florigen FT Production Prevents Precocious Flowering in Plants
Advanced Science, EarlyView.This study shows that the leaf vein‐expressed FD complexes with the florigen FT to bind DNA motifs in FT promoter, which antagonizes CONSTANS‐mediated FT activation to feedback down‐regulate FT expression. This prevents an excessive induction of FT expression by inductive photoperiods, thereby precluding precocious transition to flowering in ...
Shu Tian, Xiao Luo, Bowen Cui, Yuehui He
wiley +1 more source
Molecular Model of the Human 26S Proteasome [PDF]
Molecular Cell, 2012 The 26S proteasome plays a fundamental role in eukaryotic homeostasis by undertaking the highly controlled degradation of a wide range of proteins, including key cellular regulators such as those controlling cell-cycle progression and apoptosis. Here we report the structure of the human 26S proteasome determined by cryo-electron microscopy and single ...
da Fonseca, Paula C.A. +2 more
openaire +2 more sources
The 26S proteasome of the yeast Saccharomyces cerevisiae [PDF]
, 1994 Proteasomes are large multicatalytic proteinase complexes found in all eukaryotic organisms investigated so far. They have been shown to play a central role in cytosolic and nuclear proteolysis.
Fischer, Michael +11 more
core +1 more source
Advanced Science, EarlyView.Our research unveiled a regulatory paradigm wherein TRIM25 orchestrates the ubiquitin‐mediated degradation of UGDH. UGDH modulates the protein stability of TJP1 by regulating O‐GlcNAcylation levels, effectively impeding the metastasis of ccRCC. Our insights elevate UGDH to a pivotal biomarker and tumor suppressor, marking the first demonstration that ...
Xiaolin Chen +13 more
wiley +1 more source
The Contribution of the 20S Proteasome to Proteostasis
Biomolecules, 2019 The last decade has seen accumulating evidence of various proteins being degraded by the core 20S proteasome, without its regulatory particle(s). Here, we will describe recent advances in our knowledge of the functional aspects of the 20S proteasome ...
Fanindra Kumar Deshmukh +4 more
doaj +1 more source
Advanced Science, EarlyView.. ABSTRACT Neuroinflammation driven by microglial activation is a defining feature of Alzheimer's disease (AD), yet the molecular mechanisms sustaining this proinflammatory state remain unclear. Here, we identify the deubiquitinase OTUD7B as a critical regulator of microglial activation and AD pathology.
Luyao Li +15 more
wiley +1 more source
Neurobiology of Disease, 2017 FD is a rare neurodegenerative disorder caused by a mutation of the IKBKAP gene, which induces low expression levels of the Elongator subunit IKAP/hELP1 protein.
Mylène Hervé, El Chérif Ibrahim
doaj +1 more source