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Ubiquitination is a post-translational modification of proteins involved in a variety of cellular processes. Ubiquitination requires the sequential action of three enzymes: E1 (ubiquitin-activating enzymes), E2 (ubiquitin-conjugating enzymes), and E3 (ubiquitin ligases).
Morreale, Francesca Ester, Walden, Helen
openaire +2 more sources
Tag Team Ubiquitin Ligases [PDF]
Cullin-RING (CRL) and RING1-IBR-RING2 (RBR) are two distinct types of ubiquitin ligases. In this issue, Scott et al. show that CRLs activate the RBR enzyme ARIH1 to initiate ubiquitin chains on CRL substrates, thereby marking an unexpected and important advance in our understanding of both enzymes.
Kleiger, Gary, Deshaies, Raymond
openaire +3 more sources
The HIV1 protein Vpr acts to enhance constitutive DCAF1-dependent UNG2 turnover. [PDF]
The HIV1 protein Vpr assembles with and acts through an ubiquitin ligase complex that includes DDB1 and cullin 4 (CRL4) to cause G2 cell cycle arrest and to promote degradation of both uracil DNA glycosylase 2 (UNG2) and single-strand selective mono ...
Xiaoyun Wen +4 more
doaj +1 more source
E3 ubiquitin ligases are important components of the ubiquitin protease system. This family includes many proteins, which can catalyze the ubiquitination of a variety of protein substrates and promote the degradation of them by the proteasome system ...
Jun Feng +7 more
doaj +1 more source
Selective targeting of activating and inhibitory Smads by distinct WWP2 ubiquitin ligase isoforms differentially modulates TGFβ signalling and EMT [PDF]
Ubiquitin-dependent mechanisms have emerged as essential regulatory elements controlling cellular levels of Smads and TGFß-dependent biological outputs such as epithelial–mesenchymal transition (EMT). In this study, we identify a HECT E3 ubiquitin ligase
A Chantry +35 more
core +1 more source
Synergistic recruitment of UbcH7~Ub and phosphorylated Ubl domain triggers parkin activation [PDF]
The E3 ligase parkin ubiquitinates outer mitochondrial membrane proteins during oxidative stress and is linked to early-onset Parkinson’s disease. Parkin is autoinhibited but is activated by the kinase PINK1 that phosphorylates ubiquitin leading to ...
Aguirre, Jacob D. +9 more
core +1 more source
The AAA+ ATPase/ubiquitin ligase mysterin stabilizes cytoplasmic lipid droplets
Mysterin, also known as RNF213, is an intracellular protein that forms large toroidal oligomers. Mysterin was originally identified in genetic studies of moyamoya disease (MMD), a rare cerebrovascular disorder of unknown etiology. While mysterin is known
Munechika Sugihara +7 more
semanticscholar +1 more source
Generation and physiological roles of linear ubiquitin chains [PDF]
Ubiquitination now ranks with phosphorylation as one of the best-studied post-translational modifications of proteins with broad regulatory roles across all of biology.
A Ciechanover +47 more
core +4 more sources
The E3 ubiquitin ligase Pellino2 mediates priming of the NLRP3 inflammasome
The NLRP3 inflammasome has an important function in inflammation by promoting the processing of pro-IL-1β and pro-IL-18 to their mature bioactive forms, and by inducing cell death via pyroptosis.
Fiachra Humphries +8 more
semanticscholar +1 more source
Novel Functions of Ubiquitin Ligase HRD1 With Transmembrane and Proline-Rich Domains
Human ubiquitin ligase HRD1 is involved in endoplasmic reticulum-associated degradation (ERAD). We recently reported that HRD1 interacts with Parkin-associated endothelin receptor-like receptor (Pael-R), a substrate of Parkin, and promotes Pael-R ...
Tomohiro Omura +7 more
doaj +1 more source

