Results 61 to 70 of about 33,328 (231)

Structural and spectroscopic studies of a model for catechol oxidase [PDF]

open access: yesJBIC Journal of Biological Inorganic Chemistry, 2008
A binuclear copper complex, [Cu2(BPMP) (OAc)2][ClO4] x H2O, has been prepared using the binucleating ligand 2,6-bis[bis(pyridin-2-ylmethylamino)methyl]-4-methylphenol (H-BPMP). The X-ray crystal structure reveals the copper centers to have a five-coordinate square pyramidal geometry, with the acetate ligands bound terminally.
Smith, S. J.   +6 more
openaire   +4 more sources

Nanozymes at the Bio‐Nano Interface: From Synthesis, Defect Engineering, Catalytic Behavior in Biological Microenvironments, and Biosafety Implications

open access: yesAdvanced Materials Interfaces, EarlyView.
Nanozymes (NZs) have emerged as versatile artificial enzymes with tunable catalytic properties driven by atomic coordination, defect engineering, and surface chemistry. This review presents a bio–nano interface framework linking synthesis strategies, structural design, and catalytic behavior within complex biological microenvironments.
Karen Guadalupe Quintero‐Garrido   +6 more
wiley   +1 more source

Xanthine Oxidase Inhibition and Anti-LDL Oxidation by Prenylated Isoflavones from Flemingia philippinensis Root

open access: yesMolecules, 2020
Xanthine oxidase is a frontier enzyme to produce oxidants, which leads to inflammation in the blood. Prenylated isoflavones from Flemingia philippinensis were found to display potent inhibition against xanthine oxidase (XO).
Jeong Yoon Kim   +5 more
doaj   +1 more source

Degradation of phenanthrene and pyrene using genetically engineered dioxygenase producing Pseudomonas putida in soil [PDF]

open access: yes, 2016
Bioremediation use to promote degradation and/or removal of contaminants into nonhazardous or less-hazardous substances from the environment using microbial metabolic ability. Pseudomonas spp.
Dehghani, Mohammad hadi.   +5 more
core   +2 more sources

Tailored Porous Bimetallic Nanozyme Platform for Full‐Cycle Therapeutics of Intestinal Ischemia/Reperfusion

open access: yesAdvanced Science, EarlyView.
ABSTRACT Intestinal ischemia/reperfusion (I/R) injury presents a biphasic pathology: an acute oxidative‐inflammatory phase leading to organ failure, and a recovery phase marked by mucosal dysfunction and bacterial translocation. The developed MPB@TA‐Cu‐Ma nanocomposite functions as a dual‐phase therapeutic platform with significant efficacy. It rapidly
Chenghao Qiu   +15 more
wiley   +1 more source

Catechol oxidase activity of comparable dimanganese and dicopper complexes

open access: yesDalton Transactions, 2018
Dicopper complexes proved to be more reactive catechol oxidase mimics when compared to dimanganese complexes supported by identical ligand frameworks.
Adriana M. Magherusan   +3 more
openaire   +4 more sources

Biomimetic Polymerization of Tellurocysteine: Breaking the Natural Amino Acid Radioprotection Limitation

open access: yesAdvanced Science, EarlyView.
Inspired by natural amino acid polymer‐melanin systems, this study strategically incorporated tellurocysteine to develop advanced radiation‐shielding materials. This approach transformed the primary interaction mechanism between melanin‐based materials and incident photons from Compton scattering to the photoelectric effect. Tellurocysteine‐polymerized
Wei Chen   +6 more
wiley   +1 more source

4-Deoxyaurone formation in Bidens ferulifolia (Jacq.) DC.

open access: yesPLoS ONE, 2013
The formation of 4-deoxyaurones, which serve as UV nectar guides in Bidens ferulifolia (Jacq.) DC., was established by combination of UV photography, mass spectrometry, and biochemical assays and the key step in aurone formation was studied.
Silvija Miosic   +13 more
doaj   +1 more source

Soil Response to Agricultural Land Abandonment: A Case Study of a Vineyard in Northern Italy

open access: yesAgronomy, 2021
Agricultural land abandonment is an emerging problem in European Union (EU), and about 11% of agricultural EU land is at high risk of abandonment in the coming 10 years. Land abandonment may have both positive and negative effects in ecosystems.
Luigi Sciubba   +6 more
doaj   +1 more source

Tyrosinase and phenolic pressor amines [PDF]

open access: yes, 1942
Basic to the consideration of the action of tyrosinase on the oxidation of phenolic pressor amines are the observations of Keilin and Mann (16) and of Nelson and his coworkers (17-19) that show that different preparations may vary considerably in their ...
Alles, Gordon A.   +2 more
core  

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