Results 21 to 30 of about 38,094 (268)

Valorisation of terpenes by continuous flow hydrogenation over 3D-printed Palladium catalysts

open access: yesTetrahedron Green Chem, 2023
The hydrogenation of the monoterpene β-myrcene, the sesquiterpene farnesene and the triterpene squalene was studied in a custom-built continuous flow reactor using 3D printed stainless steel static mixers coated with Palladium catalyst.
Ivan Martinez-Botella   +3 more
doaj   +1 more source

Recent Progress in Iridium-Catalyzed Enantioselective Hydrogenation: Tetrasubstituted Olefins and Polyenes

open access: yesCHIMIA, 2008
Iridium-catalyzed enantioselective hydrogenation has become the method of choice to convert prochiral unfunctionalized olefins to optically active compounds.
Marcus G. Schrems   +2 more
doaj   +1 more source

Efficient NiIr alloy catalyst for selective hydrogenation of benzonitrile, crotonaldehyde and benzylideneacetone

open access: yesCatalysis Communications, 2023
SiO2-supported NiIr alloy acted as an effective heterogeneous catalyst for the hydrogenation of benzonitrile, crotonaldehyde and benzylideneacetone, showing much higher activity than monometallic Ni/SiO2 and Ir/SiO2 catalysts and superior selectivity to ...
Jia-qi Bai   +10 more
doaj   +1 more source

Synthesis of Ni/NiAlOx Catalysts for Hydrogenation Saturation of Phenanthrene

open access: yesFrontiers in Chemistry, 2021
The saturation of octahydrophenanthrene was the rate-determining step in the hydrogenation process from phenanthrene to perhydrophenanthrene, which was due to the steric hindrance and competitive adsorption of octahydrophenanthrene.
Dao-Cheng Liu   +10 more
doaj   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +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

Development and industrial application of catalyzer for low-temperature hydrogenation hydrolysis of Claus tail gas

open access: yesNatural Gas Industry B, 2015
With the implementation of more strict national environmental protection laws, energy conservation, emission reduction and clean production will present higher requirements for sulfur recovery tail gas processing techniques and catalyzers.
Honggang Chang   +6 more
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

Ligand-controlled regiodivergent and enantioselective C–H cyanation of secondary amines

open access: yesNature Communications
Aliphatic amines, such as N,N-dialkyl secondary amines, represent important scaffolds in bioactive molecules, driving significant interest in their regio- and stereoselective C–H functionalisation.
Yang-Jie Mao   +8 more
doaj   +1 more source

Conserved binding mode but diverse interfaces of MreC‐PBP2 interactions

open access: yesFEBS Letters, EarlyView.
The crystal structure of abMreC reveals a conserved two β‐barrel architecture and provides structural insights into its role within the bacterial elongasome. The abMreC–abPBP2 complex model identifies the molecular basis of MreC‐mediated PBP2 recognition, contributing to the regulation of peptidoglycan synthesis.
Hyunseok Jang   +4 more
wiley   +1 more source

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