Results 51 to 60 of about 474 (169)

Effects of Elimination of α Helix Regions on Direct Electron Transfer-type Bioelectrocatalytic Properties of Copper Efflux Oxidase

Electrochemistry, 2020
We investigated properties of direct electron transfer (DET)-type bioelectrocatalysis of recombinant native Copper efflux oxidase (rCueO) and its variants which lack α helices covering the electron-donating substrate-binding site (Δα5–7CueO, Δα5CueO, Δα6–
Taiki ADACHI, Yuki KITAZUMI, Osamu SHIRAI, Tenta KAWANO, Kunishige KATAOKA, Kenji KANO   +5 more
doaj   +1 more source

Cyclometalated Osmium Compounds and beyond: Synthesis, Properties, Applications

Molecules, 2021
The synthesis of cyclometalated osmium complexes is usually more complicated than of other transition metals such as Ni, Pd, Pt, Rh, where cyclometalation reactions readily occur via direct activation of C–H bonds.
Ricardo Cerón-Camacho, Manuel A. Roque-Ramires, Alexander D. Ryabov, Ronan Le Lagadec   +3 more
doaj   +1 more source

Highly Sensitive Electrochemical Biosensor Based on Hairy Particles with Controllable High Enzyme Loading and Activity

Advanced Functional Materials, Volume 36, Issue 40, 18 May 2026.
For the first time, a highly sensitive electrochemical biosensor based on SiO2‐based hairy particles with a grafted PDMAEMA polymer brush containing a quantifiable and large amount of immobilized Laccase is reported. The fabricated biosensor exhibits a sensitivity of 0.14 A·m⁻¹, a limit of detection (LOD) of 0.1 µm, and a detection range of 0.3–750 µm,
Pavel Milkin, Anila Antony, Hongtao Cai, Antonia Debevc, Ceyda Topal, Anne Linhardt, Alla Synytska, Leonid Ionov   +7 more
wiley   +1 more source

Advances in enzyme bioelectrochemistry

Anais da Academia Brasileira de Ciências
Bioelectrochemistry can be defined as a branch of Chemical Science concerned with electron-proton transfer and transport involving biomolecules, as well as electrode reactions of redox enzymes.
ANDRESSA R. PEREIRA, GRAZIELA C. SEDENHO, JOÃO C. P. DE SOUZA, FRANK N. CRESPILHO   +3 more
doaj   +1 more source

Mediatorless electrocatalytic oxygen reduction with catalase on mercury–gold amalgam microelectrodes

Electrochemistry Communications, 2021
Catalase is known for its ability to catalyze disproportionation of hydrogen peroxide into oxygen and water. This work reports the oxygen reduction reaction (ORR) catalyzed by catalase, with a decreased activation energy manifested by a positive shift ...
Agata Roguska, Adam Leśniewski, Marcin Opallo, Wojciech Nogala   +3 more
doaj   +1 more source

Nanobiosensor Based on Catalytic Palladium Nanoclusters and Oxidases for Bianalyte Electrochemical Determination: Glucose and Ethanol in Sweat

Advanced Healthcare Materials, Volume 15, Issue 16, 24 April 2026.
A nanobiosensor for fast and simultaneous determination of sweat glucose and ethanol is presented. Deposited oxidase enzymes consume oxygen in the presence of the substrates, and co‐deposited palladium nanoclusters catalyze the electrochemical oxygen reduction, basis of the detection.
Alejandro Rodríguez‐Penedo, Estefanía Costa‐Rama, Beatriz Fernández, M. Teresa Fernández‐Abedul   +3 more
wiley   +1 more source

Rapid Fabrication of Nanoporous Gold as a Suitable Platform for the Direct Electron Transfer-type Bioelectrocatalysis of Bilirubin Oxidase

Electrochemistry, 2020
Nanoporous gold fabricated via anodization in a buffer solution comprising potassium chloride served as an effective scaffold for the direct electron transfer-type bioelectrocatalysis of bilirubin oxidase from Myrothecium verrucaria (BOD).
Masahiro MIYATA, Kenji KANO, Osamu SHIRAI, Yuki KITAZUMI   +3 more
doaj   +1 more source

Electroenzymatic Cascades for Nitrogen Upgrading: Beyond Ammonia Towards Value‐Added Nitrogen Chemicals

ChemCatChem, Volume 18, Issue 7, 14 April 2026.
This review maps how electroenzymatic cascades that couple nitrogen‐cycle enzymes with C─N bond forming auxilary enzymes, powered by direct electron transfer (DET) or mediated electron transfer (MET), can upgrade N2 and waste nitrogen streams into value‐added amines, amides, amino acids, and other nitrogen‐based chemicals.
Rohit G. Jadhav, Vamshi Krishna Kamaja, Wassim El Housseini, Monica Brachi, Shelley D. Minteer   +4 more
wiley   +1 more source

Enhancing and Stabilizing Hydrogen Catalysis Through [NiFe]‐Hydrogenase Immobilization Within Macroporous Covalent Organic Frameworks

Advanced Functional Materials, Volume 36, Issue 16, 23 February 2026.
[NiFe]‐hydrogenases efficiently catalyze hydrogen conversion, but their instability limits biotechnological applications. Here it is shown that encapsulating hydrogenase into hierarchical COFs with macro‐ and micropores and functionalized with sulfonic or carboxylic acid groups improves enzyme stability and electron transfer to electrodes.
Islam E. Khalil, Armel F. Tadjoung Waffo, Prasenjit Das, Sagie Katz, Sandra Kunow, Christian Lorent, Yasmine Ziouani, Warisha Tahir, Augustine A. Owusu, Oliver Lenz, Ingo Zebger, Stefan Frielingsdorf, Arne Thomas   +12 more
wiley   +1 more source

Direct Bioelectrocatalysis via Interdomain Electron Transfer of Fungal Pyrroloquinoline Quinone-dependent Pyranose Dehydrogenase Depending on the Alkyl Chain Lengths of Self-assembled Monolayers

Electrochemistry
Direct electron transfer (DET)-enabled oxidoreductase has been utilized to develop mediator-free bioelectronic devices. Fungal pyrroloquinoline quinone-dependent dehydrogenase from Coprinopsis cinerea is an attractive quinohemoprotein in which the ...
Kota TAKEDA, Tatsuki MINAMI, Makoto YOSHIDA, Kiyohiko IGARASHI, Nobuhumi NAKAMURA   +4 more
doaj   +1 more source