Results 141 to 150 of about 187,911 (271)

Energetic stress in combination with impaired fatty acid oxidation induces sequestration of CoA and adaptation of CoA metabolism

open access: yesThe FEBS Journal, EarlyView.
Computational modelling and in vitro liver cell experiments indicate that medium‐chain acyl‐CoA dehydrogenase (MCAD) deficiency causes an accumulation of (especially medium‐chain) acyl‐CoAs at the cost of free CoA (CoASH). A substantial decrease in CoASH impairs flux through many pathways essential for energy homeostasis.
Ligia Akemi Kiyuna   +17 more
wiley   +1 more source

The malate–aspartate shuttle supports thermogenic lipid mobilization in brown adipocytes

open access: yesThe FEBS Journal, EarlyView.
Brown fat cells burn lipids within their mitochondria to generate heat. This process involves two energy “shuttles,” one of which is naturally blocked during heat production. We found that the second shuttle (MASh) is not required to generate heat. However, when MASh is disabled, the fatty acids meant for fuel are instead converted back into stored fat.
Michaela Veliova   +12 more
wiley   +1 more source

Opposing roles of DGAT‐mediated lipid droplet biogenesis in the regulation of ferroptosis sensitivity

open access: yesThe FEBS Journal, EarlyView.
Ferroptosis is driven by unrestricted peroxidation of polyunsaturated fatty acyl (PUFA) chains in membrane phospholipids. In triple‐negative breast cancer cells, lipid droplets (LDs) sequester dietary PUFAs, limiting their incorporation into membrane phospholipids, preventing mitochondrial damage, and reducing lipid peroxidation and ferroptosis.
Ana Kump   +10 more
wiley   +1 more source

A new branch of mammalian vitamin B6 metabolism: AKR1C‐mediated conversion of pyridoxal to pyridoxine and 4‐pyridoxolactone

open access: yesThe FEBS Journal, EarlyView.
Pyridoxal 5′‐phosphate (PLP) homeostasis relies on salvage enzymes, yet key metabolic branches remain undefined. We identify AKR1C isozymes as previously undescribed contributors that convert pyridoxal into pyridoxine or 4‐pyridoxolactone through reductase and dehydrogenase activities.
Nayu Kito   +8 more
wiley   +1 more source

ApEM –L 1.5: Una nueva versión del Lenguaje de Modelado Orientado a Objetos para aplicaciones educativas y multimedia

open access: yesRevista Cubana de Ciencias Informáticas, 2011
Se describe el proceso de investigación realizado para la elaboración de un lenguaje de modelado orientado a objetos para aplicaciones educativas y multimedias, denominado ApEM-L 1.5 que responde a las necesidades de la Universidad de las Ciencias ...
Yosnel Herrera Martínez   +1 more
doaj  

Tyrosine residues at the substrate binding site in human NQO1 homodimer: Protein conformational dynamics and optimization of substrate binding geometry

open access: yesThe FEBS Journal, EarlyView.
Human NAD(P)H:quinone oxidoreductase 1 is a homodimeric flavoenzyme crucial for redox metabolism and linked to significant health issues. Point mutations at Tyr126 and Tyr128 demonstrate their essential roles in optimizing substrate binding geometry for catalysis, as well as in half‐site reactivity and conformational dynamics during the enzyme's ...
Maribel Rivero   +8 more
wiley   +1 more source

RAB4A acts as a negative feedback regulator of extracellular vesicle secretion during TGF‐β signaling

open access: yesThe FEBS Journal, EarlyView.
TGF‐β signaling regulates extracellular vesicle (EV) release in cancer cells by modulating the expression and activity of genes associated with EV biogenesis. The TGF‐β‐induced upregulation of RAB4A expression facilitates fast endosomal recycling, a process that limits the fusion of multivesicular bodies with the plasma membrane and EV secretion. Hence,
Dorival Mendes Rodrigues‐Junior   +5 more
wiley   +1 more source

ALOX15 mediates thrombin‐induced myristoylation, trafficking, and interaction of protease‐activated receptors, leading to platelet activation and hemostasis

open access: yesThe FEBS Journal, EarlyView.
The role of PARs in platelet function is fairly known; however, the underlying mechanisms are not fully understood. We report that thrombin myristoylates PAR4 in mouse platelets and PAR1 and PAR4 in human platelets, facilitating their membrane transport and interaction, leading to PAR3/4 heterodimers in mice and PAR1/4 heterodimers in humans.
Suresh Govatati   +4 more
wiley   +1 more source

Machine learning for microscopy data analytics targeting real-time optical characterization of semiconductor nanocrystals. [PDF]

open access: yesNat Commun
Mukherjee A   +16 more
europepmc   +1 more source

Long‐read sequencing‐based atlas of tissue‐specific expression of DNM1L transcript variants

open access: yesThe FEBS Journal, EarlyView.
Targeted long‐read sequencing resolves full‐length DNM1L (Drp1) isoforms and reveals conserved, tissue‐specific expression patterns across human and mouse tissues. Functional assays show that Drp1 isoforms differ in their ability to drive mitochondrial fission, independent of abundance, with specific exons modulating activity.
Feng Yan   +19 more
wiley   +1 more source

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