Results 51 to 60 of about 10,401,391 (311)

Copper Modulated Lead‐Free Cs4MnSb2Cl12 Double Perovskite Microcrystals for Photocatalytic Reduction of CO2

open access: yesAdvanced Science
In order to deal with the global energy crisis and environmental problems, reducing carbon dioxide through artificial photosynthesis has become a hot topic.
Bo Gao   +11 more
doaj   +1 more source

The catalytic mechanism of aspartic proteinases [PDF]

open access: yesFEBS Letters, 1987
The highly symmetric active site of an aspartic proteinase, endothiapepsin, binds a water molecule ideally situated for nucleophilic attack on a substrate peptide bond whose distortion from planarity is stabilised by interactions of the substrate with the extended binding cleft.
openaire   +2 more sources

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

Catalytic resonance theory: the catalytic mechanics of programmable ratchets

open access: yesChemical Science
Catalytic reaction networks of multiple elementary steps operating under dynamic conditions via a programmed input oscillation are difficult to interpret and optimize due to reaction system complexity.
Madeline Murphy   +5 more
openaire   +2 more sources

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

open access: yesFEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto   +3 more
wiley   +1 more source

Structural and Biochemical Properties of Novel Self-Cleaving Ribozymes

open access: yesMolecules, 2017
Fourteen well-defined ribozyme classes have been identified to date, among which nine are site-specific self-cleaving ribozymes. Very recently, small self-cleaving ribozymes have attracted renewed interest in their structure, biochemistry, and biological
Ki-Young Lee, Bong-Jin Lee
doaj   +1 more source

Recent Advances in Supported Metal Catalysts and Oxide Catalysts for the Reverse Water-Gas Shift Reaction

open access: yesFrontiers in Chemistry, 2020
The reverse water-gas shift reaction (RWGSR), a crucial stage in the conversion of abundant CO2 into chemicals or hydrocarbon fuels, has attracted extensive attention as a renewable system to synthesize fuels by non-traditional routes.
Xiaodong Chen   +9 more
doaj   +1 more source

Mechanistic insights into the key marine dimethylsulfoniopropionate synthesis enzyme DsyB/DSYB

open access: yesmLife, 2022
Marine algae and bacteria produce approximately eight billion tonnes of the organosulfur molecule dimethylsulfoniopropionate (DMSP) in Earth's surface oceans annually.
Chun‐Yang Li   +13 more
doaj   +1 more source

On the Catalytic Mechanism of Choline Oxidase

open access: yesJournal of the American Chemical Society, 2005
Choline oxidase catalyzes the four-electron oxidation of choline to glycine betaine, with betaine aldehyde as an intermediate. In this study, primary deuterium and solvent kinetic isotope effects have been used to elucidate the mechanism for substrate oxidation by choline oxidase using both steady-state kinetics and rapid kinetics techniques.
Fan, Fan, Giovanni, Gadda
openaire   +2 more sources

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

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