Results 31 to 40 of about 681,049 (265)

Tau acetylation at K331 has limited impact on tau pathology in vivo

FEBS Letters, EarlyView.
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto, Yukio Matsuba, Mika Takahashi, Takaomi C. Saido   +3 more
wiley   +1 more source

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

FEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz, Mihály Mérey, Rebeka Vásárhelyi, Ramóna Pék, Victor Imburchia, László Henn, Adrián Kószó, Nicholas D. Lakin, Ivan Ahel, Sébastien Huet, Ágnes Czibula, Gyula Timinszky   +11 more
wiley   +1 more source

Deuterium isotope effects in mechanistic studies of biotransformations of l-tyrosine and p-hydroxyphenylpyruvic acid catalyzed by the enzyme l-phenylalanine dehydrogenase

Nukleonika
The mechanisms of the reversible oxidative deamination of l-tyrosine to p-hydroxyphenylpyruvic acid and reductive amination of phenylpyruvic acid to l-phenylalanine, both catalyzed by the enzyme l-phenylalanine dehydrogenase (PheDH, EC 1.4.1.20), were ...
Pałka Katarzyna, Podsadni Katarzyna, Szymańska-Majchrzak Jolanta, Winnicka Elżbieta   +3 more
doaj   +1 more source

Impact of Altered Intestinal Microbiota on Chronic Kidney Disease Progression

Toxins, 2018
In chronic kidney disease (CKD), accumulation of uremic toxins is associated with an increased risk of CKD progression. Some uremic toxins result from nutrient processing by gut microbiota, yielding precursors of uremic toxins or uremic toxins themselves,
Esmeralda Castillo-Rodriguez, Raul Fernandez-Prado, Raquel Esteras, Maria Vanessa Perez-Gomez, Carolina Gracia-Iguacel, Beatriz Fernandez-Fernandez, Mehmet Kanbay, Alberto Tejedor, Alberto Lazaro, Marta Ruiz-Ortega, Emilio Gonzalez-Parra, Ana B. Sanz, Alberto Ortiz, Maria Dolores Sanchez-Niño   +13 more
doaj   +1 more source

Tyrosine Phosphorylation Regulates Maturation of Receptor Tyrosine Kinases [PDF]

Molecular and Cellular Biology, 2005
Constitutive activation of receptor tyrosine kinases (RTKs) is a frequent event in human cancer cells. Activating mutations in Fms-like tyrosine kinase 3 (FLT-3), notably, internal tandem duplications in the juxtamembrane domain (FLT-3 ITD), have been causally linked to acute myeloid leukemia.
Dirk-E, Schmidt-Arras, Annette, Böhmer, Boyka, Markova, Chunaram, Choudhary, Hubert, Serve, Frank-D, Böhmer   +5 more
openaire   +2 more sources

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

FEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley   +1 more source

The ubiquitin‐proteasome system and autophagy as guardians of the cellular proteome

FEBS Letters, EarlyView.
This Perspective covers the three principles governing the crosstalk between the ubiquitin‐proteasome system and autophagy in cellular proteostasis: (1) a shared ubiquitin code routing substrates via shuttle factors or autophagy receptors; (2) spatial compartmentalization into phase‐separated degradation hubs and organelle‐specific modules (exemplified
Ivan Dikic
wiley   +1 more source

Evaluation of the serum metabolome of patients with alkaptonuria before and after two years of treatment with nitisinone using LC‐QTOF‐MS

JIMD Reports, 2019
Background The homogentisic acid‐lowering therapy nitisinone is being evaluated for the treatment of alkaptonuria (AKU) at the National Centre for AKU. Beyond hypertyrosinemia, the wider metabolic consequences of its use are largely unknown.
Andrew S. Davison, Brendan P. Norman, Gordon A. Ross, Andrew T. Hughes, Milad Khedr, Anna M. Milan, James A. Gallagher, Lakshminarayan R. Ranganath   +7 more
doaj   +1 more source

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

FEBS 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

Peripherin Is Tyrosine‐Phosphorylated at Its Carboxyl‐Terminal Tyrosine [PDF]

Journal of Neurochemistry, 1998
Abstract: Peripherin is a type III intermediate filament present in peripheral and certain CNS neurons. We report here that peripherin contains a phosphotyrosine residue and, as such, is the only identified intermediate filament protein known to be modified in this manner.
J M, Angelastro, C L, Ho, T, Frappier, R K, Liem, L A, Greene   +4 more
openaire   +2 more sources