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The development of artificial enzymes for application in sustainable technologies, such as the transformation of environmental pollutants or biomass, is one of the most challenging goals in metalloenzyme design. In this work, we describe the oxidation of mono-, di-, tri- and penta-halogenated phenols catalyzed by the artificial metalloenzyme Fe-MC6*a. It promoted the dehalogenation of 4-fluorophenol into the corresponding 1,4-benzoquinone, while under the same experimental conditions, 4-chloro, 4-bromo and 4-iodophenol were selectively converted into higher molecular weight compounds. Analysis of the 4-chlorophenol oxidation products clarified that oligomers based on C-O bonds were exclusively formed in this case. All results show that Fe-MC6*a holds intriguing enzymatic properties, as it catalyzes halophenol oxidation with substrate-dependent chemoselectivity.
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http://dx.doi.org/10.3390/ijms24098058 | DOI Listing |
Carbohydr Polym
November 2025
College of Life Sciences, Henan Agricultural University, Zhengzhou 450046, China. Electronic address:
Artificial starch production from bioreactors is very promising in terms of amylose's broad applications as well as the possibility of addressing food shortage. We previously built an in vitro cellulose-to-starch pathway, synthesizing amylose from non-food cellulose. A challenge of this pathway lies in its low amylose yield due to the fact that only cellobiose in cellulose hydrolysate can be converted into amylose while cellodextrins with a degree of polymerization (DP) ≥ 3 cannot be utilized.
View Article and Find Full Text PDFCurr Opin Ophthalmol
September 2025
Singapore National Eye Centre, Singapore Eye Research Institute, Singapore, Singapore.
Purpose Of Review: Alongside the development of large language models (LLMs) and generative artificial intelligence (AI) applications across a diverse range of clinical applications in Ophthalmology, this review highlights the importance of evaluation of LLM applications by discussing evaluation metrics commonly adopted.
Recent Findings: Generative AI applications have demonstrated encouraging performance in clinical applications of Ophthalmology. Beyond accuracy, evaluation in the form of quantitative and qualitative metrics facilitate a more nuanced assessment of LLM output responses.
Assay Drug Dev Technol
September 2025
School of Applied Sciences, CT University, Sidhwan Khurd, India.
The escalating challenges associated with antibiotic resistance have posed formidable obstacles in the fight against microbial infections and the prevention of biofilm formation. To address this challenge, we developed PEB-COP-Cu, a low-cost, readily available copper-integrated covalent organic polymer (COP) with dual enzyme-like activities and intrinsic photoresponsiveness, to accelerate infected wound healing. This material was synthesized through the post-metallization process of a COF xerogel (PEB-COP), obtained a Michael addition elimination reaction, utilizing photoactive tetra-(4-aminophenyl)porphyrin (TAPP) and β-ketoenamine, specifically 1,3,5-tris(3-dimethylamino-1-oxoprop-2-en-yl)benzene (abbreviated as TDOEB), as the fundamental building blocks.
View Article and Find Full Text PDFAdv Sci (Weinh)
September 2025
School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, China.
Enfumafungin-type antibiotics, represented by enfumafungin and fuscoatroside, constitute a distinct class of fungi-derived fernane-type triterpenoids renowned for their potent antifungal activity. Notably, ibrexafungerp, a semi-chemically synthesized analogue of enfumafungin, has recently received approval as a novel antifungal drug. Thus, reconstituting the heterologous biosynthesis of enfumafungin holds great significance, as it offers a promising route for high-level production.
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