Results 11 to 20 of about 778,835 (257)

Enzyme Mimic Displaying Oscillatory Behavior. Oscillating Reduction of Manganese(III) Porphyrin in a Membrane-Bound Cytochrome P-450 Model System [PDF]

open access: greenJournal of the American Chemical Society, 1995
Contains fulltext : 10134.pdf (Publisher’s version ) (Open Access)
Albertus P. H. J. Schenning   +5 more
openalex   +5 more sources

Hydroxyl radical-mediated, cytochrome P-450-dependent metabolic activation of benzene in microsomes and reconstituted enzyme systems from rabbit liver. [PDF]

open access: hybridJournal of Biological Chemistry, 1983
The mechanism of benzene oxygenation in liver microsomes and in reconstituted enzyme systems from rabbit liver was investigated. It was found that the NADPH-dependent transformation of benzene to water-soluble metabolites and to phenol catalyzed by cytochrome P-450 LM2 in membrane vesicles was inhibited by catalase, horseradish peroxidase, superoxide ...
Inger Johansson   +1 more
openalex   +3 more sources

The Role of Cytochrome P450 AbyV in the Final Stages of Abyssomicin C Biosynthesis

open access: yesAngewandte Chemie International Edition, Volume 62, Issue 3, January 16, 2023., 2023
The cytochrome P450 enzyme AbyV catalyses a key epoxidation in the final stages of the biosynthesis of the spirotetronate antibiotic abyssomicin C. Combining structural and computational data with a 13C labelling strategy was found to be a powerful approach to interrogate the biotransformation and determine the precise function of the enzyme.
Andrew J. Devine   +13 more
wiley   +1 more source

Enabling Aromatic Hydroxylation in a Cytochrome P450 Monooxygenase Enzyme through Protein Engineering

open access: yesChemistry – A European Journal, Volume 28, Issue 67, December 1, 2022., 2022
Structural and biochemical data demonstrate that 4‐phenylbenzoic acid binds within the active site of the cytochrome P450 monooxygenase CYP199A4, but no oxidation occurs. Protein engineering and molecular dynamic simulations establish that aromatic oxidation is enabled by a subtle shift of the substrate relative to the heme, thus improving our ...
Tom Coleman   +9 more
wiley   +1 more source

Functional activity of peptide ion channels in tethered bilayer lipid membranes: Review

open access: yesElectrochemical Science Advances, Volume 2, Issue 6, December 2022., 2022
Abstract Ion transport across biomembranes plays a major role in living cells. This fundamental function is normally carried out by molecules with both a hydrophobic and a hydrophilic side (amphiphilic molecules), which aggregate within the membrane forming a hydrophilic pore (the ion channel) permitting the selective translocation of permeant ions ...
Rolando Guidelli, Lucia Becucci
wiley   +1 more source

Isolation and characterization of antioxidant peptides from oyster (Crassostrea rivularis) protein enzymatic hydrolysates

open access: yesFood Science &Nutrition, Volume 11, Issue 1, Page 261-273, January 2023., 2023
Five obtained peptides exhibited high radical scavenging activities in the following order: F5 > F3 > F1 > F2 > F4.; F5 has the highest activities for DPPH‐IC50 was 21.75 μg/mL, hydroxyl‐IC50 was 18.75 μg/mL, and Superoxide‐IC50 was 11.00 μg/mL and the reducing power was 2.54 OD700.; F5 had the highest antioxidant activity and not only prevented the ...
Hui Huang   +9 more
wiley   +1 more source

Exposures to pesticides and risk of cancer: Evaluation of recent epidemiological evidence in humans and paths forward

open access: yesInternational Journal of Cancer, Volume 152, Issue 5, Page 879-912, 1 March 2023., 2023
Abstract Knowledge of the role in cancer etiology of environmental exposures as pesticides is a prerequisite for primary prevention. We review 63 epidemiological studies on exposure to pesticides and cancer risk in humans published from 2017 to 2021, with emphasis on new findings, methodological approaches, and gaps in the existing literature.
Haleigh Cavalier   +2 more
wiley   +1 more source

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