Results 81 to 90 of about 129,362 (255)

HECT E3 ubiquitin ligases – emerging insights into their biological roles and disease relevance

open access: yesJournal of Cell Science, 2020
Homologous to E6AP C-terminus (HECT) E3 ubiquitin ligases play a critical role in various cellular pathways, including but not limited to protein trafficking, subcellular localization, innate immune response, viral infections, DNA damage responses and ...
Yaya Wang   +4 more
semanticscholar   +1 more source

The ubiquitin–protein ligase activity of Hdm2 is inhibited by nucleic acids

open access: yesFEBS Letters, 2003
The proto‐oncoprotein Hdm2 is a member of the RING finger‐type family of ubiquitin–protein ligases E3. The RING finger domain is assumed to mediate the specific interaction of an E3 with its cognate ubiquitin‐conjugating enzyme E2, which catalyzes the covalent attachment of ubiquitin to substrate proteins. In addition, the RING finger domain of Hdm2 is
Laetitia K. Linares, Martin Scheffner
openaire   +3 more sources

A ubiquitin-protein ligase specific for type III protein substrates. [PDF]

open access: yesJournal of Biological Chemistry, 1990
A previously studied species of ubiquitin-protein ligase contains specific sites for the binding of basic (Type I) and bulky hydrophobic (Type II) NH2-terminal amino acid residues of protein substrates. We now describe another enzyme that ligates ubiquitin specifically to proteins that have NH2-terminal residues other than the above two categories ...
Hannah Heller, A Hershko
openaire   +2 more sources

Necdin promotes ubiquitin-dependent degradation of PIAS1 SUMO E3 ligase. [PDF]

open access: yesPLoS ONE, 2014
Necdin, a pleiotropic protein that promotes differentiation and survival of mammalian neurons, is a member of MAGE (melanoma antigen) family proteins that share a highly conserved MAGE homology domain.
Ibrahim Gur   +3 more
doaj   +1 more source

Replication of proto-RNAs sustained by ligase-helicase cycle in oligomer world [PDF]

open access: yesarXiv, 2013
A mechanism of the replication of proto-RNAs in oligomer world is proposed. The replication is carried out by a minimum cycle which is sustained by a ligase and a helicase. We expect that such a cycle actually worked in the primordial soup and can be constructed in vitro.
arxiv  

Does inter-organellar proteostasis impact yeast quality and performance during beer fermentation? [PDF]

open access: yes, 2019
During beer production, yeast generate ethanol that is exported to the extracellular environment where it accumulates. Depending on the initial carbohydrate concentration in the wort a high concentration of ethanol can be achieved in beer, often higher than 20% (v/v). It is noteworthy that the effects of elevated ethanol concentrations generated during
arxiv   +1 more source

PepMLM: Target Sequence-Conditioned Generation of Therapeutic Peptide Binders via Span Masked Language Modeling [PDF]

open access: yesarXiv, 2023
Target proteins that lack accessible binding pockets and conformational stability have posed increasing challenges for drug development. Induced proximity strategies, such as PROTACs and molecular glues, have thus gained attention as pharmacological alternatives, but still require small molecule docking at binding pockets for targeted protein ...
arxiv  

Mechanistic analysis of PCNA poly-ubiquitylation by the ubiquitin protein ligases Rad18 and Rad5

open access: yesEMBO Journal, 2009
Poly‐ubiquitylation is a common post‐translational modification that can impart various functions to a target protein. Several distinct mechanisms have been reported for the assembly of poly‐ubiquitin chains, involving either stepwise transfer of ...
J. L. Parker, H. Ulrich
semanticscholar   +1 more source

Mechanism of cullin3 E3 ubiquitin ligase dimerization. [PDF]

open access: yesPLoS ONE, 2012
Cullin E3 ligases are the largest family of ubiquitin ligases with diverse cellular functions. One of seven cullin proteins serves as a scaffold protein for the assembly of the multisubunit ubiquitin ligase complex.
Yin Yin Choo, Thilo Hagen
doaj   +1 more source

Immune regulation by protein ubiquitination: roles of the E3 ligases VHL and Itch

open access: yesProtein & Cell, 2018
Protein ubiquitination is an important means of post-translational modification which plays an essential role in the regulation of various aspects of leukocyte development and function.
Daisuke Aki   +4 more
doaj   +1 more source

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