Results 91 to 100 of about 95,661 (297)

Guest Transition Metals in Host Keplerate Nanocapsules as Supramolecular Inorganic Functional Mimics of Monooxygenase Enzymes

open access: yesAngewandte Chemie, EarlyView.
A Keplerate, an inorganic, porous buckyball was used as a host for copper metal cations ligated by histidine surrogates. Prepared by a simple assembly technique, the guest–host complex was used as a primitive biomimetic model of a monooxygenase enzyme complex, where C─H bonds were electrocatalytically hydroxylated by oxygen under reducing conditions ...
Eynat Haviv   +4 more
wiley   +2 more sources

CeO2‐Based Electrocatalysts for the Oxygen Evolution Reaction: Design, Dynamic Mechanisms, and Electrolyte Adaptability

open access: yesAdvanced Science, EarlyView.
This Review shows how cerium oxide helps water‐splitting catalysts work better and last longer. It explains how CeO2 tunes electronic structure, oxygen‐vacancy behavior, and surface reconstruction, while adapting to alkaline, acidic, and seawater conditions.
Zhen Cui   +9 more
wiley   +1 more source

An IscS Persulfide Donates the Sulfur for Ribosomal Protein uL16 Thioamidation

open access: yesAngewandte Chemie, EarlyView.
YcaO‐catalyzed thioamidation of the ribosomal subunit protein uL16 is widespread in Pseudomonadota bacteria. We identify the iron–sulfur cluster cysteine desulfurase IscS as the sulfur donor via an IscS persulfide and observe direct IscS–uL16 interactions.
Yanqing Xue   +2 more
wiley   +2 more sources

Photochemical Regiodivergent Functionalization of Quinolines with Aryl Ketones

open access: yesAdvanced Science, EarlyView.
A photocatalytic system‐controlled approach enables regiodivergent C2‐ and C4‐functionalization of quinolines with aryl ketones by optimizing aryl thiol photocatalysts and formate reductants. Using ortho‐(isopropoxycarbonyl)thiophenol with excess formate facilitates C4‐dearomatization, yielding bridged 1,3‐oxazepanes. In contrast, meta‐(methoxycarbonyl)
Yi‐Lin Zhao   +6 more
wiley   +1 more source

Two-Component FAD-Dependent Monooxygenases: Current Knowledge and Biotechnological Opportunities

open access: yesBiology, 2018
Flavoprotein monooxygenases create valuable compounds that are of high interest for the chemical, pharmaceutical, and agrochemical industries, among others. Monooxygenases that use flavin as cofactor are either single- or two-component systems.
Thomas Heine   +4 more
doaj   +1 more source

Surface‐State‐Driven Selectivity of Electrocatalytic Glucose Oxidation: Metallic Au, Au─OH, and CuO

open access: yesAdvanced Science, EarlyView.
In the electrochemical oxidation of glucose, whether the pyranose ring opens upon adsorption decides the reaction pathway: ring opening on metallic Au yields gluconic acid, gluconolactone formation on Au─OH leads to glucaric acid, and C─C cleavage on CuO gives formic acid. Surface state thus governs product selectivity.
Myeonghwan Oh   +9 more
wiley   +1 more source

Role of prolyl hydroxylation in the molecular interactions of collagens [PDF]

open access: yes, 2019
Co- and post-translational hydroxylation of proline residues is critical for the stability of the triple helical collagen structure. In this review, we summarise the biology of collagen prolyl 4-hydroxylases and collagen prolyl 3-hydroxylases, the ...
Heino, Jyrki   +3 more
core   +1 more source

AI‐Assisted Ultrasensitive Biosensing using Metal‐Electrolyte‐Metal‐Insulator‐Silicon Structure Based on Oxygen‐Tunable Iridium Oxide Nanonets for Lysyl‐Oxidase‐Like‐2 Breast Cancer Detection

open access: yesAdvanced Electronic Materials, EarlyView.
An oxygen‐controlled iridium‐oxide (IrOx) nano‐net structure is developed to enhance the sensitivity of metal‐electrolyte‐metal‐insulator‐silicon (MEMIS) biosensors. Integrated with a deep learning model, this platform achieves a high accuracy of 94.8% for detecting the breast cancer biomarker LOXL2.
Chiao‐Fan Chiu   +9 more
wiley   +1 more source

When is a target not a target?

open access: yeseLife, 2019
Cells rely on prolyl hydroxylase enzymes to sense low levels of oxygen, but they might act on fewer targets than previously thought.
David C Bersten, Daniel J Peet
doaj   +1 more source

Alkane Hydroxylation by Peroxy Acids: A Comparison with the Cytochrome P450 Hydroxylation

open access: yes, 2008
Alkane hydroxylation by peroxy acids proceeds by a synchronous nonconcerted peroxy oxygen insertion into the C-H bond according to density functional theory.
Groenhof, A.R.   +5 more
core   +2 more sources

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