Results 11 to 20 of about 1,883 (82)
Polyphenol Oxidase Products Are Priming Agents for LPMO Peroxygenase Activity
ChemSusChem, Volume 16, Issue 18, September 22, 2023., 2023 Priming versus fueling. It is demonstrated here that the catalytic products of a polyphenol oxidase acting on guaiacol can prime the peroxygenase activity of lytic polysaccharide monooxygenase (LPMO) towards cellulose in H2O2‐driven reactions but do not provide sufficient reducing power to fuel LPMO activity under O2‐driven reactions.
Caio de Oliveira Gorgulho Silva +5 more
wiley +1 more source
European Journal of Inorganic Chemistry, Volume 2022, Issue 35, December 16, 2022., 2022 Dinuclear copper(I) complexes supported by bis‐tridentate N‐donor ligands with two imine functions mediate the conversion of a monophenol to its corresponding o‐quinone, in contrast to analogous complexes supported by ligands with amine functions. Abstract Four structurally related bis‐tridentate N‐donor ligands with either two secondary amine or two ...
Rebecca Schneider +4 more
wiley +1 more source
Angewandte Chemie, Volume 134, Issue 25, June 20, 2022., 2022 Homoleptische CuI‐Komplexe mit verschiedenen Liganden (CH3CN, oDFB, NEt3) und Gegenionen mit unterschiedlicher Koordinationsfähigkeit (BF4−, OTf−, PF6−, Al(OC(CF3)3)4−) katalysieren die Umwandlung von Monophenolen in o‐Chinone. Detaillierte mechanistische Untersuchungen zeigen, dass diese Reaktion, im Gegensatz zum dinuklearen Mechanismus des Enzyms ...
Rebecca Schneider +4 more
wiley +1 more source
Copper‐Catalyzed Monooxygenation of Phenols: Evidence for a Mononuclear Reaction Mechanism
Angewandte Chemie International Edition, Volume 61, Issue 25, June 20, 2022., 2022 Homoleptic CuI complexes with different ligands (CH3CN, oDFB, NEt3) and counterions of varying coordination ability (BF4−, OTf−, PF6−, Al(OC(CF3)3)4−) catalyze the conversion of monophenols to o‐quinones. Detailed mechanistic research shows that this reaction follows a mononuclear pathway, in contrast to the dinuclear mechanism of the enzyme tyrosinase.
Rebecca Schneider +4 more
wiley +1 more source
Bacterial pigments: A colorful palette reservoir for biotechnological applications
Biotechnology and Applied Biochemistry, Volume 69, Issue 3, Page 981-1001, June 2022., 2022 Abstract Synthetic derivatives are currently used instead of pigments in many applicative fields, from food to feed, from pharmaceutical to diagnostic, from agronomy to industry. Progress in organic chemistry allowed to obtain rather cheap compounds covering the whole color spectrum. However, several concerns arise from this chemical approach, as it is
Viviana Teresa Orlandi +4 more
wiley +1 more source
The Plant Genome, Volume 15, Issue 2, June 2022., 2022 Abstract As one of the important species belonging to the Bletilla genus of Orchidaceae, Bletilla striata (Thunb.) Rchb. f., possesses both ornamental and medicinal values. Its dried tubers are used as a traditional Chinese medicine, and several secondary metabolites have been indicated to be the active ingredients.
Xiaoxia Ma +6 more
wiley +1 more source
ChemBioChem, Volume 23, Issue 6, March 18, 2022., 2022 The ability to perform regiospecific hydroxylations of sterically challenging monophenols was engineered into a flavin‐dependent monooxygenase. Its variants are valuable tools for production of the corresponding catechols for in vitro or live whole‐cell conversions.
Susann Herrmann +5 more
wiley +1 more source
Anthropogenic and natural barriers affect genetic connectivity in an Alpine butterfly
Molecular Ecology, Volume 30, Issue 1, Page 114-130, January 2021., 2021 Abstract Dispersal is a key biological process serving several functions including connectivity among populations. Habitat fragmentation caused by natural or anthropogenic structures may hamper dispersal, thereby disrupting genetic connectivity. Investigating factors affecting dispersal and gene flow is important in the current era of anthropogenic ...
Daronja Trense +5 more
wiley +1 more source
Polyphenol Oxidase Activity on Guaiacyl and Syringyl Lignin Units
Angewandte Chemie, Volume 136, Issue 48, November 25, 2024.The conversion of lignin‐derived guaiacyl (G) and syringyl (S) compounds into methoxy‐ortho‐diphenols through oxidative ortho‐hydroxylation and ortho‐demethoxylation reactions catalyzed by novel fungal polyphenol oxidases (PPOs) is presented. The formation of o‐diphenols rather than reactive quinones can be steered by the addition of a reductant. These
Caio de O. G. Silva +7 more
wiley +2 more sources
Unraveling Lignin's Color Puzzle: From Chromophore Origins to Advanced Decolorization Strategies
Aggregate, Volume 7, Issue 1, January 2026.This review provides a comprehensive systematic analysis of the research advancements in lignin color formation mechanisms and decolorization techniques, specifically focusing on three principal approaches: hydroxyl shielding, biomass fractionation, and physical methods. It highlights the systematic research approach of the review toward decolorization
Lizhen Huang, Zhuotong Wu, Li Shuai
wiley +1 more source