Results 31 to 40 of about 192,112 (260)

Why is manganese so valuable to bacterial pathogens?

open access: yesFrontiers in Cellular and Infection Microbiology, 2023
Apart from oxygenic photosynthesis, the extent of manganese utilization in bacteria varies from species to species and also appears to depend on external conditions.
Jan Čapek, Branislav Večerek
doaj   +1 more source

Protein-protein interactions in plant antioxidant defense

open access: yesFrontiers in Plant Science, 2022
The regulation of reactive oxygen species (ROS) levels in plants is ensured by mechanisms preventing their over accumulation, and by diverse antioxidants, including enzymes and nonenzymatic compounds.
Pavol Melicher   +3 more
doaj   +1 more source

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

open access: yesFEBS 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   +11 more
wiley   +1 more source

The therapeutic opportunities and pitfalls of using iron ion chelators to treat neurodegenerative diseases

open access: yesFEBS Letters, EarlyView.
Although too much iron in the brain promotes neurodegeneration, iron ion chelators have had mixed effects in clinical trials. This review explains why; some chelators do not render the iron redox‐inactive (e.g., L1) whereas others do (e.g., desferrioxamine).
Barry Halliwell
wiley   +1 more source

Effect of Ammonia on Escherichia coli Growth and Aerobic Respiration: The Role of Cytochrome bd-II

open access: yesAntioxidants
Bacterial terminal oxidases are essential for growth and may provide protection against environmental stressors. Bacteria often have to cope with ammonia, which, although an essential nutrient, is toxic at high concentrations.
Francesca Giordano   +3 more
doaj   +1 more source

The role of redox homeostasis biomarkers in clear cell renal cell carcinoma development and progression [PDF]

open access: yesMedicinski Podmladak, 2022
The clear cell renal cell carcinoma (ccRCC) is the most frequent and the most aggresive subtype of renal cell carcinoma usually detected at an already advanced stage.
Mihailović Smiljana   +2 more
doaj  

Dimethyl fumarate combined with cisplatin at subcytotoxic doses sensitizes cervical cancer toward ferroptosis and apoptosis through GSH restriction and p53 (re)activation

open access: yesMolecular Oncology, EarlyView.
Dimethyl fumarate (DMF) reduces growth of HPV‐positive cervical cancer spheroids and induces ferroptosis in cervical cancer cells via blocking SLC7A11/Glutathione (GSH) axis. Combination of subcytotoxic doses of DMF and cisplatin (CDDP) further suppresses spheroid growth and drives cell death in 2D culture models.
Carolina Punziano   +6 more
wiley   +1 more source

A structure-based approach for detection of thiol oxidoreductases and their catalytic redox-active cysteine residues. [PDF]

open access: yesPLoS Computational Biology, 2009
Cysteine (Cys) residues often play critical roles in proteins, for example, in the formation of structural disulfide bonds, metal binding, targeting proteins to the membranes, and various catalytic functions.
Stefano M Marino, Vadim N Gladyshev
doaj   +1 more source

The ligand-docking approach explores the binding affinity of PFOS and PFOA for major endogenous antioxidants: A potential mechanism to fuel oxidative stress

open access: yesSustainable Chemistry for the Environment, 2023
Per- and polyfluoroalkyl substances (PFAS) are the emerging environmental contaminants having worldwide distribution. These compounds impose toxic impacts on organisms by disrupting redox homeostasis.
Prem Rajak, Abhratanu Ganguly
doaj   +1 more source

Establishing an assay to evaluate d‐amino acid oxidase enzyme kinetics and inhibition using WST‐8 redox dye

open access: yesFEBS Open Bio, EarlyView.
This study investigated a novel WST‐8‐based assay for evaluating d‐Amino acid oxidase (DAO) inhibitors. We confirmed its effectiveness using known inhibitors and found that uremic toxins possess relatively weak inhibitory activity compared to existing drugs.
Kahoko Miyake   +4 more
wiley   +1 more source

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