Results 71 to 80 of about 41,455 (313)

High resolution cryo-EM and crystallographic snapshots of the actinobacterial two-in-one 2-oxoglutarate dehydrogenase

open access: yesNature Communications, 2023
Actinobacteria possess unique ways to regulate the oxoglutarate metabolic node. Contrary to most organisms in which three enzymes compose the 2-oxoglutarate dehydrogenase complex (ODH), actinobacteria rely on a two-in-one protein (OdhA) in which both the
Lu Yang   +8 more
doaj   +1 more source

Oxidative decarboxylative ammonium hypoiodite-catalysed dihydrobenzofuran synthesis

open access: yesOrganic & Biomolecular Chemistry, 2022
The catalytic use of quaternary ammonium iodides under oxidative conditions allows for the direct conversion of readily available β-ketolactones into dihydrobenzofurans.
Katharina Röser   +4 more
openaire   +3 more sources

Polycondensation as a Universal Method for Preparing High‐Density Single‐Atom Catalyst Libraries

open access: yesAdvanced Materials, EarlyView.
This paper presents a universal bottom‐up polycondensation strategy for synthesizing high‐density single‐atom catalysts (HD‐SACs) with metal loadings up to 27.5 wt%. Using various metal monomers with 1,10‐phenanthroline‐5,6‐dione ligands, it generates atomically dispersed mono‐ and bimetallic HD‐SACs.
Jaques‐Christopher Schmidt   +21 more
wiley   +1 more source

The Natural Redox Cofactor Pyrroloquinoline Quinone (PQQ) Enables Photocatalytic Radical Cyclizations

open access: yesAngewandte Chemie, EarlyView.
Natural alcohol and sugar dehydrogenases that utilize the redox cofactor pyrroloquinoline quinone (PQQ) can be repurposed for enantioselective photoredox catalysis. Upon blue‐light irradiation, redox‐neutral radical cyclizations are catalyzed. This work adds a new class of enzymes to the toolbox of photobiocatalysis.
Srishti B. Bahukhandi   +8 more
wiley   +2 more sources

An Alternative Mechanistic Paradigm for the Electrochemical C‐Terminal Decarboxylation of Peptides

open access: yesChemElectroChem
The C‐terminal decarboxylation of peptides provides an important opportunity to synthesize modern peptide pharmaceuticals that contain C‐terminal amides.
Adam J. Sowers   +2 more
doaj   +1 more source

Prelog Lecture: Mechanism and Structure of Biosynthetic Enzymes. The Biosynthesis of Vitamin B6

open access: yesCHIMIA, 2003
On Monday, November 11, 2002, the vice president, Prof. Dr. Gerhard Schmitt, presented the Prelog Medal 2002 to Prof. Dr. David E. Cane, Brown University, Providence, Rhode Island, USA.
David E. Cane
doaj   +1 more source

Research Progress on Vanillin in Alcoholic Beverages

open access: yesShipin gongye ke-ji, 2022
Vanillin is a very important aroma compound in alcoholic beverages. It has been widely concerned because of its pleasant sweet aroma, vanilla aroma and physiological function.
Xinliang MO   +4 more
doaj   +1 more source

Photocatalytic Aqueous Reforming of Methyl Formate

open access: yesAdvanced Materials, EarlyView.
A 3d‐metal Cu‐based atomically dispersed photocatalyst, supported on modified g‐C₃N₄, facilitates the photocatalytic selective hydrogen (7.5 mmol gcat−1 of hydrogen; nothing else than H2 and CO2) generation from methyl formate. This diverse system functions under mild conditions, providing high hydrogen yield, selectivity, and enduring stability ...
Dongxu Zuo   +13 more
wiley   +1 more source

Mixed‐Metal Ce‐Zr‐Mn Clusters as Photo‐Catalysts for Decarboxylative Functionalization of Carboxylic Acids

open access: yesAngewandte Chemie, EarlyView.
Decarboxylative hydrazination of carboxylic acids is achieved using a 1:5:2 ratio of three metal salts, Ce(OtBu)4, Zr(OtBu)4, and Mn(OAc)3, as a catalyst under visible light irradiation, in which single cerium‐incorporated hexanuclear mixed‐metal clusters containing a [CeZr5O4(OH)4]12+ core are formed with association of manganese(II) species.
Sota Tamaki   +7 more
wiley   +2 more sources

Pre-symptomatic activation of antioxidant responses and alterations in glucose and pyruvate metabolism in Niemann-Pick Type C1-deficient murine brain. [PDF]

open access: yesPLoS ONE, 2013
Niemann-Pick Type C (NPC) disease is an autosomal recessive neurodegenerative disorder caused in most cases by mutations in the NPC1 gene. NPC1-deficiency is characterized by late endosomal accumulation of cholesterol, impaired cholesterol homeostasis ...
Barry E Kennedy   +6 more
doaj   +1 more source

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