Results 151 to 160 of about 306,357 (240)

Synthetic models of the active site of catechol oxidase: mechanistic studies

Chemical Society Reviews, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Patrick Gamez, Catherine Belle, Katalin Selmeczi   +2 more
exaly   +4 more sources

Schiff-Base Chemistry-Coupled Catechol Oxidase-Like Nanozyme Reaction as a Universal Sensing Mode for Ultrasensitive Biosensing.

Analytical Chemistry, 2023
Expanding sensing modes and improving catalytic performance of nanozyme-based analytical chemistry are beneficial to realizing the desired biosensing of analytes.
Yuechun Li, Peng Wang, Lunjie Huang, Conghui Jia, Xianguo Gao, Sijie Liu, Shaochi Wang, Penghui Zhao, Jing Sun, Daohong Zhang, Ming Zhu, Yizhong Shen, Jianlong Wang   +12 more
semanticscholar   +1 more source

Amino-Ligand-Coordinated Dicopper Active Sites Enable Catechol Oxidase-Like Activity for Chiral Recognition and Catalysis.

Nano letters (Print), 2023
Developing highly active and selective advanced nanozymes for enzyme-mimicking catalysis remains a long-standing challenge for basic research and practical applications.
Meng Sha, L. Rao, Weiqing Xu, Ying Qin, Rina Su, Yu Wu, Qie Fang, Hengjia Wang, Xiaowen Cui, Lirong Zheng, Wenling Gu, Chengzhou Zhu   +11 more
semanticscholar   +1 more source

Catechol oxidase nanozyme based colorimetric sensors array for highly selective distinction among multiple catecholamines.

Analytica Chimica Acta, 2023
In order to effectively monitor multiple catecholamine (CA) neurotransmitters with extreme similar structures, a rapid, sensitive and selective detection strategy has become an urgent problem to be solved.
Jian Yin, Mengxuan Liu, Cheng Lan, Baiquan Chu, Lei Meng, Na Xu   +5 more
semanticscholar   +1 more source

A review on bio-functional models of catechol oxidase probed by less explored first row transition metals

Journal of coordination chemistry, 2022
Catecholase activity is a biological process in which type-3 active site of a copper enzyme, named catechol oxidase, catalyzes oxidation of o-diphenolic substrates to the corresponding o-quinones coupled with reduction of molecular dioxygen into water ...
R. Tripathy, Shuvendu Singha, Sohini Sarkar   +2 more
semanticscholar   +1 more source

The basicity of an active-site water molecule discriminates between tyrosinase and catechol oxidase activity.

International Journal of Biological Macromolecules, 2021
Tyrosinase (Ty) and catechol oxidase (CO) are members of type-3 copper enzymes. While Ty catalyzes both phenolase and catecholase reactions, CO catalyzes only the latter reaction.
Y. Matoba, K. Oda, Yoshimi Muraki, T. Masuda   +3 more
semanticscholar   +1 more source

Pyrazolate-based porphyrinic metal-organic frameworks as catechol oxidase mimic enzyme for fluorescent and colorimetric dual-mode detection of dopamine with high sensitivity and specificity

, 2021
Enzyme-simulating nanomaterials, with obvious advantages of high activity, stability and cost-effectiveness, can surrogate the complex natural enzymes and catalyze enzyme-like reactions in various harsh applications.
Dongxu Zhang, Peiyao Du, J. Chen, Huixia Guo, Xiaoquan Lu   +4 more
semanticscholar   +1 more source

Coniferyl alcohol oxidase ? a catechol oxidase?

Trees, 1995
The physico-chemical properties of coniferyl alcohol oxidase (CAO), a copper containing glycoprotein spatiotemporally associated with lignification in conifers, is reported here. By electron paramagnetic resonance spectroscopy, only type 3 copper was indicated in CAO. CAO oxidizes several laccase substrates; however, it is not a blue-copper protein and
PreethiV. Udagama-Randeniya, RodneyA. Savidge   +1 more
openaire   +1 more source

Synthesis and spectroscopic characterization of ternary copper(ii) complexes containing nitrogen and oxygen donors as functional mimics of catechol oxidase and phenoxazinone synthase

, 2020
Two ternary copper(II) complexes 1 [(Cu2Me4en)4(EDTA)] and 2 [(CuMe4en)2(MIDA)] containing the mixed ligand system of 1,1′,4,4′-tetramethylethylenediamine (Me4en) (L) and N-methyliminodiacetic (MIDAH2) (L′) or ethylenediaminetetraacetic acid (EDTAH4) (L′)
A. Ramadan, S. Shaban, M. Ibrahim, A. Abdel-Rahman, S. Sallam, Sami A. Al‐Harbi, Walid F. Omar   +6 more
semanticscholar   +1 more source

Oxidation of Catechol by Tea-Oxidase

Nature, 1950
DURING the enzymic oxidation of catechol, approximately two atoms of oxygen are taken up for each molecule of catechol, whereas only one atom is required for oxidation to the o-quinone stage. Wagreich and Nelson1 consider this extra uptake to be accounted for by the interaction of the o-benz-quinone with water to form 1 : 2 : 4-trihydroxy-benzene ...
E A H, ROBERTS, D J, WOOD
openaire   +2 more sources